International Edition
June 1984 Issue #285 $2.50 U&A/$3.00 CANADA
Amateur Radio's lechnical Journal
A CWC/I Publication
Projects
duild!
Flashy British Transistor Tester
Page 34
Rate Your
Page 30
Simple Rf Frequency Counter
Page 10
r
Kjiiabalu-76
Easy Berardi Building
You can count on this simple frequency counter from Arizona. ...Berardi 10
f:
Don't Grope in the Dark!
Xn Let a simple card-file box be the brains CiJ of
your own emergency lighting system. W7RXV
Flying High with Two
Here's how a hand-held makes for some ultra- light Michigan madness WBfiDQT
\
C
Meeting Ends Make
These ten tips will better your club Are you friendly or frigid? N6HYK
\
J troller doesn't bend the budget
16
20
Creason's Do-It DVM
The more Sam builds, the more smart people pay attention K6EW 26
30
Tester Project: England '83
H Wherein you flash-chance transistors, chap . Penfold 34
Sounds Good to Me
a Two Texan s put togetlier '75 Mors« RU:- It's the best Baste VIC-20/C-64 code program you will ever see.
WSVKOt.WBSAYD
Piggy-Bank Repeater Project
Set it and forget it. This inflexible con-
38
KT2B 42 Not-So-Famous Garriott Words
In one of his first post'STS-9 appearances, W5LFL 5poke at Foothill tCA) College. We record his dedication to amateur radio N6BIS 48
2m Madness— 20
Better the R-70
'JT"! At your own risk, you can soup up one ^ of I corn's super receivers. How to do it
was not read here.
KE4AQ 54
Elegant Rotating
K9AZG did it right W4RNL makes ft better. For sightless and sighted bams
.N
alike, this update to a 1982 article will be revealing, .W4RNL
Requiem for the Tube
jri This pleasing project is perfect for pen- ^^ todes. It could be die last time you use them. WA2EWT
New Orders for the R-109
Two bucks and ten minutes are all it takes to ne^nlist a vintage receiver.
. K8AXK/7
Try Quality Code
a Using thts Mod III update is much simpler than saying its titk trenty times.
KfeAPW
^\
tl»¥or Say Die— 6 n IntemationaT— 73 H»m Hefp — 80,87,94,120,126 Conectlorrs— SO Social Evertts— 83 Sweeps Wifiners- 89 New Products— 90 Review— 92 RTTY Loop— 93
60
68
70
7o
PiMll— 94
COfrtests — 96 DX— 97 Awards— 99 Letters— 102 Reader Setvice—1 14 Barter WByy— 116 FCC— 118 Satellites— 120 E)ealef Directory— 130 Propagation— 130
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9 Memofles. Tne IC-27A/37A/47A hove 9 memo fies available to store receive frequency, transmit offset, offset direction, and PL tone. Merrko- ries are booked up by a ffthium backup battery, wbicti will store nr>emafies for up to seven yeors
Speech Synthesiief* As an added plus, the IC-27A/37A/47A feature an optional speech synth^szer to vestxiliy anrXHjnce
the receiver frequency of the transceiver through the simpie push of a button This ailows the operator to hear which fre- quency he is operating on with- out looking at the transceiver
Scanning. The IC- 27A/37A/47A series has a scanning system which allows scanning of memories or scanning of ^he borid
Pflortty Scon. Prioritv moy be selected to be either a menriory chonne^ or o VFO channel. By using sampling techr^iques. the operator can determine if o frequency wtitch he wonts to use is free or Dusy,
Microphone. Bxti C- 27A/37A/47A comes connpiete
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Stocking Mol^lJe Mounds for the IC-27A/37A/47Ai make a small complete station for 1 to 3 bands. Each' band is fyll fea- tured and fully operationaj even when another band is In use
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73 Magailm • June, 1984 3
— 'UP YOUR ERP*
For HT owners operating inside a vehicle and wanting increased T/fl range, RF PRODUCTS has the low cost solution.
Remove your BNC antenna from the HT and mount on the RF PRODUCTS BNC magnet mount, install the magnet mount on the roof lop and conriect the BNC coax connector
The magnet mount (part no. 199-445} has \0 feet of small (5/32 ") co-ax with BNC connector attached and is priced at $15.95 {including shipping by UPS to 46 states). TO ORD £R ^ s&nd S1 5.95 money order or cashiers check only
Fla. residents add 5% tax, for air UPS add $1 .50
A'
:!n*f.
The R F PRODUCTS IVlagnet Mounts are one of the few magnetic antenna mounts avaiJabie th at can be re pal red s ho u I d t he co-ax cabi e b e damag ed . Th e co-ax cab I e con n ecto r i nc i u d es a shrink tubing strain relief for long life at the connector/cable flex point (an RF PRODUCTS exclusive on all cable assemblies).
Ei g ht oth e r models a va i I a b le w ith th re© eac h c h o i ce of a nte n n a co n n ectors , co-ax ty p es and transceiver connectors (BNC. 1-1/8-18. 5/16-24 & RG-122U, RG-58A/U. mini 8X & BNC, PL-259, lypeN).
RF PRODUCTS
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To Take CONTROL with Smart Patch - Call 800-327-9956 Ext. 101 today.
^ COMMUNICATIONS ELECTRONIC SPECIALTIES, INC.
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INFO
Manuscripts
Contributions m the fofm of mariLh scripts witti drawings and/or photo- graptis are welcome and wit I be con- sidered for possible publication. We can assume no responsibility for toss or damage to any material. Please en- clos& a stamped, self-addr«ss^ envel- ope with each submission. Payment for ttie yse of any unsolicited material will be made upon acceptance. All oon- Iributtons should be directed to the 73 edItorJal offices. "Haw to Write for 73" guidelines are avaitabJe upon request. US citizens must include theif social security number with submitted manu- scripts.
Editorial Offices:
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Peterborough NH 03458 Plione: 603^24-9471
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Phorie: 603-924-7138
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Phone: 603^924-9471
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In the United States and Possessions: One Year (12 issues) $25.00 Two Years (24 issues) $38.00 Ttiree Years (36 issues) $53.00
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Write to 73, Subscription Department, 1^ Bo;( 931, Farmingdale NY 11737. For renewals and changes oJ address^ Include the address label from your most recent issue of 73. For gift sul> scriptions, include your name and ad* dress as well as those of gift re- el pbnts.
Subscription
problem or
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Write 10 73, Subscription Department, PO Sox 931 ^ Farmingdate NY 11737. Ptease inciude an address Fabel.
73: Am^t&ur Rad/o's TechniCBf Journai flSSN 0746080X) is puWished monthly by Wayne Green, Ir^, 80 Pine Street. Peteitsorough NH 03458. Second cEass posta^ paid at Peterborough NH 03458 and at additional malting offices. Entire oontefits copyright© 19S4, Wayne Green, Inc. All rights reserved. No part of this publication may be reprintect or otherwise reproduced without written permission fnonn the pubtisher. Micro- film Edition— University Micfofiimj Ann Arbor Ml 46106, Postmaster Send ad- dness changes to 73, Subscription Ser- vices, PO Box 931, Farmingdale NY 1 1737. Nationally distributed by Interna^ tlonal Giroulatiori Distributors,
4 73 Magazine • June, 1984
CHECK +DU.
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i
r For the ultimate in two- Tvetef communications, fCOM ^resenls the IC-271H transceiver
with a high dynamic range eceiver and a 100 watt ransmltter. Operating from the C-PS50, IC-PS15. or the internal iC^PSas (optional), the IC-271H Dfings all the advanced 'unctions of the latest CPU gpntrolle<l rodios to your shack.
|h100 Watts. Now q two- meter base station with 100 watts of internal powerl The (C- 271H provides all the power required for operation from remote places to repeaters, or for sinriplex
Sub^udlble Ton«s.
Included as a standard feature ore 32 buift-in subaudible lones which or© easily selected by ro- tating the main tuning knob. PL tones may be stored into memory,
32 FulKFu notion Memories.
Eoch tunable merryory holds frequency, offset, offset direction, mode and subaudible tone, Eoch porametef is selected by rototir>g the main tuning knob in conjunction with the switches on the front panel.
PIL Locked ot lOHi. An
©)ftremely low-noise, professional receiver and a good signol-to- noise ratio PiL allows the IC- 271H's synthesizer to lock to 10Hz providing receiver performance unparalleled by any other VHF receiver.
Huor#se9fif CHipl0y. ECOM's high' visibility, multicolor drspioy gives eosy-tchfead disploy of ail infofmotion necessary for logging o contact Frequency, mode, duplex, offset direction, RIT fre- quency, memory ct^onnel and PL tone con be displayed,
Scanning. Ihe 0271H can scan rr^rrvones Qr>d programmed sections of the bond or modes Mode-S scon con be used to scan only memories with a par- ticular mode or lock out fre- quencies continuousty busy so tt^e receiver will not stop at that memory channel whJIe scanning,
Otfi«r Standard F9<]tures. To foclllfate the operatk>n of the iC'271H ICOM has incofpocated o duplex check switch, all-mode sqyek;h, receive audio tone control, S-meter, center meter, seven-year lithium battery memory backup, accessor/ connector and microphone
Opilonol Featuf#t. 0271 H optbns ore: swrtchable preompllfier. CTCSS encoder/decoder (ericoder is standard), computer interface ond voice synthesizer
StiJ©. Only 1 Vi inches wide by 4^5 inches high, the IC-271H ss styied to iook good and engi- neered for ease of operatjon.
Th#IC-271A. Tt^elC-27fA
with 25 watt output Is avaiiabie and has the same features as the IC-271H, plus an optional IC-PS25 internal power supply to make it o compact, go- onywtiere two-meter base stotion See the IC-271A{H) ond other fine COM equipment at your ICOM dealer today.
I
^^275
ICOM
TheVferld System
COM America. Inc., 2112-1 16m Ave N£. OeJIevue. WA 96004(206)454-6155 / 3331 Towerwood Drive, 5ui re 307, Do] las, IX 75234(214)620-2760
Ali sFtit^ ^jedficofions are cppr^t^moie ond iub^ect to cttonge withaur notice or obitgonon Ail iCOM rodlca siQnJftcanrly exceed FCC regiiangns bmjting spurioy^ emissions 37 1 Hi 06^-1
W2NSD/I
NEVER SAY DIE
ecZ/tor/a/ t>y Wayne Gr&en
DUMB WAYNE
Word of a petition I submitted to the FCC having to do with GW was pubHstied in abbreviated form in QSL Working on the basis of this biased report and without giving the situation much thought, a few Chicl^en Utttes have been yelling wolf, if i may mix my metaphors. Actual- ly, i think that without except ion the reaction has been to attack me pefsonaily, not fiiy ideas, i'm used to that.
In a classic case of projec- tion, I'm classed as dumb by amateurs who haven't been reading 73 and thus don't under- stand what i'm doing. Hey, they may not agree with what I think Of do, but if they ascribe dumt> ness as a factor, they're in trouble.
So what in hell is Wayne up to, anyway? Well, it Is simple in some ways, but not quite obvi- ous unless you read things care- fully all the way through and then think about it. You 73 read- ers are used to that— indeed, that may be one of the things
that sets you apart from the others.
Let's look at the tiasfc situa- tion. We have a dying hobby- amateur radio. Twenty years ago, 75% of the newcomers were teenagers. Now, not only do we have very few newcomers^ but of the ones we do have, only about 25% are teenagers. Thus not only is amateur radio drying up as a market and as a hobby, but also it has almost totally dried up as a source of high*tech career people. This last has. ! believe, done serious damage to our country.
Now, I suppose that it is quaint of me to worry about the United States. And it Is even sil- lier lor me to let my feelings for my country influence what I do. But I see amateur radio as hav- ing two ma|or responsibilities to our country—one as a way to at- tract youngsters to high-tech careers and the other as the only real backup we have for com- munications in case of a nuclear attack.
Neither of these is a simple
KA5SRN
PAUL W. HORNE 1075 CARDINAL LA. PARIS, TEXAS 75460
QSL OF THE hflONTH
To enter your QSU put It in an envelope along with your choice ot a book tfom 73' s Radio Bookshop and mail It to 73, Pine Street, Peterborougti NH 0345B, Attn: QSU of the Month. Entries nol In envelopes or vi^llhout a t>OQk choice wME not be accepted.
6 73 Mstgazine • June, 1984
matter. But I can't help but take emergency communications se- fiousty when President Reagan tells us that a survtvabie emer* gency communications service would be one of the best deter- rents to an atomic attack yet. This makes eminent sense.
If I didn't think it made sense, I would not have devoted the last few years to working with the FCC's National Industry Ad- visory Committee and the last 18 months also to the FCC's Long-Range Planning Commit* t^ (for emergency communica- tions). I've made many trips to Washington at my expense for these committee meetings and have been one of the more ac- tive participants right from the beginning.
By virtue of my position with the committees and my discus- sions with the FCC Commis- sionerSj I have a fairly good un^ derslanding of the state of the art of emergency communtca* tions at present for all of the communications services. Tve written about this before, so It should not be a news flash, I don't think l*m letting any secrets out if I tell you that other than amateur radio, there are few real plans for coping with any serious emergencies by the commercial radio communica- tions systems. The worst part of it is that you may Imagine that amateurs have some sort of wonderful secret plan. Sorry about that, but there's virtually nothing I
Amateurs have taken the lead in coping with emergency com- munications needs tor many years — and we've done rather well, all things considered. These past emergencies have taught us some lessons which
Continued on page 88
STAFF
w 1^^ OfHA vsNSiyi
A5ST. EPrrOfUPtlBUSHBt EXECtmVEEDrrOR
MANAOINQ eOTTOn Suaan Ptiimnclc
ASST. MANAQINQ EDiTOR Sltvfl JftWitl
TECHNICAUINTEHKATIDNAL EDITOR Pwry Dontiam KK2Y
EDITOniAL ASSISTANTS
N*ncy No^d
Rsdwd Piwoi*
ASSOCmiES
Robirt Baiw waaoFE
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i H Httian
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notWfl Swirfc)i,y AF2M PAOOUCTfOM DIRECTOR
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AOVEf^TlSlMO OFIAPHICS
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Easy Berardi Building
You can count on this simple frequency counter from Arizona.
Joseph Berardi 14213 K 38th SL Phoenm AZ 85032
Front view.
PC board, foiWide view.
10 73 Magazine * June, 1964
This is a construction arti- cle for building a very
simple, high-quality fre* quency counter My honie-
W1 U1-3 to DS2"9
W2 U1-4 to DS2-7
W3 U1-5 to DS2-e
W4 U1"6toDS2"6
W5 Ul-8toDS1-9
W6 U1-9toDS1-8
W7 UI-IOloDSI-7
W8 U1-11toDS1-6
W9 U1-15toDS1-1
W10 DS1-1toDS2-1
W11 U1-ietoDS1-14
W12 DS1'14toOS2-14
W13 U1-17toDS1-13
W14 DS1-13toDS2-13
WIS U1-19toDS1-3
W16 DS1-3 10DS2-3
W17 U1-20toDS1-11
W18 DS1-11toDS2-11
W19 U1-21toDS1-4
W20 DS1-4toOS2-4
W21 U1-22toOS1-12
W22 DS1-12toDS2-12
W23 U1-23toDS1"5
W24 DS1-5toDS2-5
Table 1. Wiring guide.
made counter uses the very popular Intersil ICM'7216-D counter chip and the Fair* child 11C90 prescaler. just add a few discrete compo- nents, some LED displays, another three ICs and we have a very professional- looking frequency counter. I built this counter on a 3''X6" printed circuit board and installed it in a small lightweight enclosure. The counter design is essentially lifted right out of the appli-
zzz 400 «00 no lOQC
1 1ff PUT FqfOyEiwCT-ilHt
Fig. 1. operating rang^ of the 77Cm
Frequency (MHz) |
Signal Level |
(mV nns) |
Minimum |
Maximum |
|
.449 |
10 |
1.800 |
1.0 |
10 |
2,250 |
10.0 |
10 |
2.250 |
50.0 |
14 |
600 |
100^ |
20 |
2,000 |
150.0 |
20 |
540 |
200.0 |
27 |
540 |
250.0 |
31.5 |
380 |
300.0 |
37 |
760 |
350.0 |
31.5 |
470 |
400.0 |
31 |
340 |
450.0 |
47 |
280 |
500.0 |
SO |
270 |
560.0 |
71 |
280 |
Resolution 1 kHz @ ,1'Second gate time; power requirements: 5 volts ® 200 mA or 7.5-24 volts @ 225 mA,
Table 2, Operating limits on the author's counter using an HP8640 for comparison.
PC board, component'Side view.
cation notes for both the fre- quency counter and pre^ scaler iCs.
I will not go into great de- tail on the operation of the two nnain ICs; the applica- tion notes have all of the necessary infornnation. This counter will accurately mea- sure frequencies from 500 kHz to over 600 MHz.
Operation
The frequency counter circuttry consists of three main sections. The first sec- tion consists of a wideband commercial-grade amplifier. The second section consists of two counters to prescale the signal down to a usable frequency since the Intersil maximum operating fre- quency is about 10 MHz, The third section is the Inter- sil counter which counts pulses for a specified gate time and then displays the frequency.
Preami
The wideband amplifier has a flat frequency re- sponse up to 450 MHz and gradually starts rolling off as the frequency increases. The MWA130 has a gain of aph proximately 14 dB from 0 to 450 MHz and gradually drops down to 11 dB of gain at 600 MHz.
The high-power amplifier was chosen over the low- po we r ve rs ion (M W A1 1 0) since the amplifier starts sat-
urating at a much smaller signal fevel. When the am- plifier starts saturating, the harmonics increase in am- plitude relative to the fun- damental. This confused the prescaler and resulted in er- roneous readings. Accord- ing to the data sheet the prescaler is most sensitive
with a 225-400-mV p-p signal applied to the input The diodes on the input merely protect the amplifier since the diodes won't start limit- ing until a 500-mV p-p signal is applied- This signal level would result in presenting a minimum of 1-V p-p signal to the prescaler. This would limit the prescaler to only 450 MHz.
Prescaler
The 11C90 is a high-speed prescaler designed for com- munication and instrumen- tation applications. The pre- scaler can be programmed to divide by 10 or 11. The 11C90 is hard-wired in the divide-by-10 mode. The prescaler has both ECL and TTL outputs, but only the TTL output is used in this ap-
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2II»
DIG ir II
OIQ 34101
err o^c
DEC OUT
DIfi 4
Olfi 9
-Did
PlO 7
729CD
PIE SET
CX DEC Pt
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It « » C J
D3 |
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PS2
Fig. 2 frequency counter schematic.
73 Magazine • June, 1984 11
Fig. 3. PC board.
plication According to the data sheet this IC has the widest operating range, with a 225-40OnnV p-p input sig- nal level (see Fig, 1). The prescaled output tog-
gles a TTL decade counter;
the output of the decade counter is now lylOO of the originai signal and is count ed by the Intersil frequency counter.
Frequency Counter
The frequency counter has an internal time-base Ce- cil lator which uses an exter- nal crystal. A lO.OOO-MHz crystal was chosen for this
Parts Ust |
||
U1 |
iCM7216D— Intefsil (common cathodeji-^ |
$20.96 |
U2 |
74196 |
.60 |
U3 |
11C90— Falrchffdi^^ |
16.95 |
U4 |
MWA130 Motorola 1-3.4 |
8.25 |
U5 |
LM7805 |
*99 |
DS1 |
DL4509— LJlronlx (common cathode^^^ |
2.99 |
DS2 |
DL-J^09— Litronix |
2.99 |
Y1 |
lO.ChMHzcryrstal |
3.00 |
CR1-3 |
1N914 diode |
wm |
LI |
10CkjH-500*uH molded coiL V* Watt |
1J35 |
Resistors ('A Watt, 5% unless otherwise specif iad) |
,07 |
|
R1,R2 |
10,000 Ohms |
|
R3,R4 |
1 ,000,000 Ohms |
|
RS |
110,000 Ohms |
|
R6.R7, |
1,000 Ohms |
|
R9 |
120 Ohms |
|
1 R10 |
4700 Ofims |
|
Capacitors |
||
C1 |
1 uF, 50 volts, electrolytic |
.15 |
C2,C3 |
39 pF, mica |
28 |
C4 |
10 uF, 50 volts, electfolytte |
.15 |
C5,C6,C8-C11,C13 |
.1 uF, ceramic disc |
10/125 |
C7,C12 |
1000 pF. ceramic disc or mylar™ |
.12 |
Miscellaneous: PC board, 28i)in. wire-wrap IC socket, 14-pin low-profile IC |
socket. |
|
case, BNC connedor, miniature phone jack, TO-220 heat sink, &<ligit bezel* wire, | |
||
solder, etc. |
||
1 Circuit Specialists Co.. Box 3047, ScottsdaJe A2 as?57. |
||
2 Jameco Electronics, 1356 Shoreway Rd., Belmont CA 9400Z |
||
3 MHz Electronics. 2111 W. Cameiback Rd. Phoenix AZ 86015. |
||
^ Semiconductor Surplus, 2822 N. 32nd St., Phoenix AZ 85008. |
application. There are a few discrete external compo- nents which tap the signals necessary for determinirrg the counter's mode of oper- ation. The counter has four possible gate times, but only the ,1 -second gate time is used, for simplicity; A 1 sec* ond gate time will increase the counter's resolution to 100 Hz, but will update the display at a much slower rate— which can be annoy- ing if you are looking for rapid changes in frequency.
Constniction
1 laid out a printed circuit board for the circuitry and
used the wire-wrap tech- nique for wiring the dis- plays. The point-topoint wiring method will work just as well for the displays, A wire list is included for wir- ing the two Litronix red multi-digit reflector arrays. These displays are very inex- pensive, but almost any common-cathode, seven-seg- ment displays can be used instead. The prescaler must be soldered directly onto the PC board, but DIP sock- ets can be used for the remaining DIP ICs, The builder should use the as- sembly drawing as a guide for installing the parts, and the parts list for determining the component values.
12 73 Magazine • June, 1984
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73 Magazine • Jur»e, 1984 13
HEATSINK
fig. 4, Component layout
Checkayt
This project requires a + 5-V-dc supply. A voltage regulator is supplied, so a dc
charger (Radio Shack) can be used for power. When us- ing the voltage regulator, the supply voltage can be anyw^here between 7.5 and
20 volts but must be able to supply 200 mA of current The display will light up as soon as power is supplied. Apply a signal to the input
and the display will count the input frequency. You will be surprised at the ex- cellent performance of the counter.!
from
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Patent Pending
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Con be installed In approximately 80 feet of space • Higher power models ovailcbie
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14 73 Magazine • June, 1984
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3520 Rockingham Road Greensboro, North Carolina 27407 (919)299-3437
f vet Ffukman W7kXV 2S08 West Rancho Drive Phoenix AZ B5017
Don't Grope in the Dark!
Let a simple card-file box be the brains of your own emergency lighting system.
Because a salesman's business lunch was abruptly interrupted by a sudden power failure, a well-known flashlight and battery manufacturing firm was founded. When the main lighting system failed, everyone's attention was drawn to the restaurant's novel ffower planters; they contained a crude flashh light Perhaps this is one of the earliest recorded uses
of automatic emergency lighting.
Today, it is common,
even required in some cases, to have a form of au- tomatic emergency lighting in hospitals, hotels, busi- nesses, etc. Many homes are so equipped as a matter of convenience.
Although sophisticated commercial systems are
r
Parts placement The four diodes at the relay form a bridge, allowing use of a 6-vott relay and a cheap ac low-voltage game module^ The diode near the top of the box ensures proper polarity of the recharging current
16 73 Magazifte • June, 1964
available which include re- chargeable batteries, trick- le chargers, test buttons, and power-on indicators, it
is practical to make a sim- ple but very effective sys- tem mostly out of junk-box parts. The system need not be any more complicated than a flashlight lamp, two dry cells, a relay, and a snap-in battery holder. Two alkaline cells, if the TV ads are believable, should still give plenty of light even af- ter two years of intermit- tent use, although an annu- al check/change might be in order.
Regardless of which sys- tem you put into your home, ham shack or cabin, the ba- ste operation is quite simple. When the power fails, the normally-closed contacts of a 115-volt relay complete the circuit between the bat* teries and light bulb. The bulb automatically turns off and the batteries start re- charging (if it is that type of system) when the power is restored,
Cel cells take a float charge quite well, and for that reason are found in many commercial emergen-
^41 ^
The parts needed for the project
tt
N.U. |
|
.; ISK OHM |
|
> zm |
|
1 |
|
V iPi40l>6 |
iiSV AC |
ffEL*Y |
|
JL^ |
|
ffi) LEO |
FROM eATTEFfV
(4 - 40 M^CHIN£ S CHE WSJ
I
Fig. h Schematic of the emer^ncy-Hghting project
l&JEV
CONTACTS TO FIASHUIOHT OH LANTERN
CUftiVEMT LIMIT R£5I3TDR
FOR CK^j^GiitG batte:iiies
-^Afc —
Fig. 2. A variation of the project
cv-Iighting systems, Nicads, on the other hand, don't like float charging and should be completely run down before being recharged.
A 4" X 6" card-file box holds the few parts I used. The on/off switch disables the system when it is pur- posely removed from the power mains. The terminals
on the side of the box go to an external charger for the two n leads. As the diagram in Fig, 1 shows, a diode is se- ries-connected with one of the terminals to prevent ac- cidental discharge or re* verse charge. The relay con- tacts could be connected to a lantern through a minia- ture plug and a closed-cir-
The finished project in action.
cuit jack if you don't wish to construct a flashlight. The relay isolates the 115-volt lines from the low-voltage lighting circuit.
Fig. 2 shows a variation using a low-voltage relay with suitable transformer and provisions for recharg- ing batteries. Don't give up for lack of a 115-volt relay. Perhaps the spare-parts box has an old door bell trans-
former and a low-voltage re- lay in it or a diode and a se- ries-voltagendropping resistor can make a dc relay work.
There are many possible variations of the basic cir- cuity this should give you a good starting point.
The gentle pitter-pat of a summer rain shower and ac- companying sharp lightning bolt doesn't have to leave you in the dark again !■
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PAS to V/311 ATV Pawif Ampliflif . S39 00 p|»<l.
The Phb w4( pui wl \Q waTis RMS power on synt lips when driven with fiO rnw by the TXA5 esater. 50 Qtitns ih and tiut &ius bantJwidlh tor ttie wnoiii banfl wilh flndd linear i1^ lof cataf ^rid ^ouiid . Requires 1 3 a VDC feg @ 3 5Tnps
Olltw write fof our complete catalog of si>4cification$. siatJion i^lup diagrams, and optional acceasones wtiich inciyde antennas, modulaitors, test generalgf^, cameras and mucH, much more See Ch. 14 13B3 ARRU Haiidbook
TERMS VISA or MASTERCARD b^ tefephone or mail, or chock or money order by maiL All prices Me delivered in USA. Charge orders normally shipped within 24 tiours. Personal checks must ciear first. i^^^ffl
See YOM at Dayton. {818)4474565 ^^m 9
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Tom W60RG Maryann WB6Y5S
Arcadfa. California 91006
73 Magazine • June, 1984 17
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18 73 Magazine • June, 1984
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73 Mag&zine • June, 1984 19
Flying High with Two
Here's how a band-held makes for some ultralight Michigan madness.
Raiph E. Js^gi^n WB8DQT 602 S. jeifer&on Mason Mt 4dB54
FM articles in the ama- teur press seem to cover a wide spectrum — from providing communications for the opening of a new
The author intefitly strapping into the flying hnrness prior to donning stopwatch, camera, and hand-held. Some of the wire bracing that rigidities the aircraft structure is clearly visible. The 15-hp engine is mounted below the wing and drives the prop (located behind the wing] through a belt re- duction system,
20 73 Magazine • June, 1984
A 2-meter quafter-wave whip anchored to the forward end of the fuselage provides increased range over a rubber duckie partially shielded by the tubular frame of the aircraft.
Don Chubb, my partner in ultrattght madness, lifts off in light ground fog for an early morning flight The pilot's weight is shifted to the rear for takeoff and climb, achieved by simply keeping his legs straight when his feet are resting on the foot bar up by the nose wheei Movement forward wilt pitch the nose down while movements from side to side wilt turn the aircraft in the direction of movement. Pitch control is achieved entirely by weight shift The side to side movements of the pilot induce the required bank for a turn with the rudder coupled to the harness. Although such a control system sounds strange to a pilot used to the conven- tional control stick and rudder pedals, it actually feels quite natural and can be learned in a fraction of the time required for convent ionat flight training.
sewage plant to linking voice-controlled repeaters with blue light. In a sense this is an FM article, but it is a bit off the beaten track in that it describes a new use for those ever-present two- meter hand-helds that seem to be sprouting up like mushrooms on the ad pages of all the magazines-
The subject at hand is the marriage of good old VHF and UHF FM with what is perhaps the neatest inven- tion since 20 meters — the ultralight aircraft- It is an application where your FM bands may provide one of the few viable options for good communications (more on that later), but for the moment, if you have a slightly adventurous spirit, hang in there and let me in- troduce you to ultralights prior to lamenting their communications problem,
First of all, what is an ul- tralight? The easiest answer is that it is a minimal air-
craft—a simple flying ma- chine of aluminum tubing, dacronTM, and a small engine— that can introduce you to the thrill of flying with a minimum of fuss, low cost, and, although it might seem difficult to believe, safety. Almost everyone has dreamed of flying at one time or another and radio ama- teurs are at least as prone to the syndrome as anyone else — perhaps more so The next time an air mobile calls on 52, just listen to the pileup! The response is due in no small part to the vicarious participation it provides.
In the days of the Wrights and pioneers such as Glen Curtis, the aircraft were constructed of wood, fab- ric, and wire, and although the activity was far from safe, it was thrilling enough to galvanize a world into the age of flight. Today fly-
After taking off and making a 180^ turn, the author swings back over the farmyard while climbing to cruise altitude. Although our Quicksilver has a service ceiling of 900i) feet most flying is done between 500 and 1500 feet^high enough for safety yet low enough to avoid most other air traffic white stiti maintaining a good view of the country- side. Wind is the greatest enemy of the ultralight flier and most flying is done with wind speeds of 5 mph and below ~ primarily early morning and early evening, t have built a couple of fancy anemometers to keep track of wmd speed, but the leaves of this old tree still provide the most reliable indication of flying conditions^
ing is taken for granted — the thrill is still there and it is certainly safe, but just as certainly it is no longer ei- ther simple or economical Of course it really can't be simple with air lanes criss- crossing the sky stacked all the way to the stratosphere and the requirement of maintaining the safety of those in the air and on the ground. Nonetheless, it is hard to avoid nostalgia for the early days when frail aircraft lifted out of cow pastures, thrilling pilot and spectators alike.
In a sense, uftralight air- craft can provide a return to the best of these rose-col- ored visions. Ultralights trace their evolution to the hang-gliding movements of the early and middle 60s when intrepid souls, long- ing to fly on a budget, launched down hills and sand dunes on (or more pre- cisely beneath) rogallos, monoplanes, and biplanes constructed of bamboo and plastic sheeting. That sport
blossomed with the aircraft rapidly evolving to sophisti- cated aerodynamic forms constructed of aircraft aluminum and dacron. To- day the sport is dominated by launches from cliffs and mountains in search of the lift to provide flights to ex- treme altitude or long dis- tances crosscountry. Inter- nal regulation permitted hang gliding to develop into a generally sane activity and I have followed its de- velopment for several years.
Unfortunately, Michigan has no mountains and even if we had spectacular cliffs and sea breezes, 1 really couldn't see myself step- ping off into the void! Ap- parently other flatlanders had the same problems, but their response was differ- ent Instead of sighing and putting away the maga- zines, they responded by at- taching engines and wheels to reliable hang-glider de- signs and ultralights were born! The result has been a
73 Magazine * June, 1964 21
Our rural ''aerodrome" photographed from an altitude of 400-500 feet. Not a bad antenna location. Although the gain of the array may not he spectacutar. it's hard to com- plain about the line tosses. The reliable communications range is quite fantastic and if the Unk is marginai you simply climb a little higher
surge of reliable, simple air- craft that will fly out of
your local pasture, Aircraft- grade aluminum tubing and hardware, stabilized da- cron, and light and power- ful two-cycle engines replace the hardware of yesteryear while sophrsfi- cated application of low- speed aerodynamic princi- ples replaces the "wonder if this will fly" approach of the early days, The simplici- ty and thrill remain,
At present, regulation is minimal [no pilot certifi- cate or aircraft registration required) if the design meets two criteria— it must carry only one person and it must be capable of being launched and landed on foot Note that I said capa- ble. If the ultralight is a commercial product, the manufacturer will provide evidence of foot-launch and -landing capability and you can stick to your wheels. However, if you de- signed the bird or modified it and you should encoun- ter an FAA inspector, ex- pect to demonstrate it your- self. If you fail to do so, you will be advised to get a stu- dent pilot's certificate and register the aircraft. Stricter regulation is on the hori- zon, but it will probably be modest with an aim toward
22 T3 M&gazme • June, 1934
maintaining safety while preserving a category for simple recreational aircraft. Present limitations will probably be retained with the addition of standards for maximum aircraft weight, flight training stan- dards, and assurance of fa- miliarity with the Federal Aviation Regulations (FARs),
Ultralights come in a be- wildering array of designs, most running between $3000 and $4500 in price. Most ultralights are deliv- ered in the form of a collec- tion of aircraft hardware. pre-drilled and -formed aluminum tubing, and pre- sewn fabric with assembly time varying from 10 to 30 hours.
The key to safety is to stick with those manufac- turers who insist that you buy from a dealer who will inspect your work before you fly it. The Quicksilver, owned by my partner Don Chubb and me, is a good ex- ample of this policy. Manu- factured by Eipper For- mance of San Marcos CA, it must be purchased through a dealer who will provide any advice you require dur- ing assembly (about 20 hours). The dealer will with- hold certain vital items — such as the prop— pending dealer Inspection of your
machine and will test-fly it once assembly is complete. You cannot take full posses- sion of your flying machine until you have completed the dealer flight training course which involves about 5 hours of instruc- tion. One or two hours will get you to your solo while the rest is devoted to devel- oping proficjency.
The plane itself is very simple to fly and after the first few minutes of your solo you will ease out of the shaking-knees-and -white* knuckle phase and really re- lax and enfoy the experi- ence. The key to safe ultra- light flight is rigorous pre- f light checks on the ma- chine and careful attention to the wind. The latter is an important factor given the light weight of the machine. Our Quicksilver has a 32-foot span and 160 square feet of wing area^yet weighs only 155 pounds. With a pi- lot weight of 190 pounds, that is quite a bit of wing for relativefv little weight. Most tramtng is conducted under calm conditions. Air currents of 5-10 mph are considered windy and gusty conditions are avoided completely.
The thrill of flying cannot really be described. To real- ly understand it. you have to experience the world opening up as you rise above the tree line at the start of your own private dawn patrol over the rural countryside. Suffice it to say that I spent a good bit of the summer flying every minute 1 could with nary a thought to the old radio shack!
Once I had become im- mersed in the ultralight ex- perience, however, 1 did be- gin to realize that commu- nications between the pilot and the ground could be of real value. Take training as one example. Needless to say, there is no such thing as dual instruction in a single- seat ultralight. The instruc* tor stands on the sidelines to discuss your progress
and problems as you learn proper ground handling, transition to crow hops [short hops into the air down the runway), and fi- nally the solo flight
Ultralights fly very slow- ly (typically 20-^35 miles/ hour) and are constructed of tough materials so you are not likely to hurt your- self in training. However it is possible to bend some tubing that will cost $$$ to replace. Most of the stu- dent problems leading to bent tubing and a confi- dence crisis could easily be avoided if the instructor could speak to the student during his gyrations instead of afterward. Sounds like a job for radio. Ditto once you are flying regularly. Wind conditions can change, for example, while a flight is in progress. It would be nice if the individ- ual waiting patiently (?) on the ground for his turn could talk with the flier about such weighty mat- ters—not to mention the in- evitable "You've been up for 40 minutes, the sun is going down, and I want my turn!"
Cross-country flights have their own attraction; although you will not go particularly far cruising at 30-35 mph, flights of up to 30 miles are quite practical. We usually run a chase car for such ventures, but the car has to follow the roads and is often detoured to pick up gas for the return flight or to get the family outdoors to watch Daddy fly over. Given these reali- ties, a communications link would be quite useful in keeping track of where the aircraft is located, notifying if the flight route has been changed, or, heaven forbid, if you have had to put down somewhere out in the boonies with a problem,
Most ultralights are flown without instruments since they really aren't needed for this kind of fly- ing. If you do carry up an al- timeter or air-speed indica*
tor, it is ysually out of a sense of curiosity rather than necessity. Radios, however, would be nice. The question is, what kind of a radio. It is here that the unique nature of ultralights presents a problem Most are powered by two-cycle engines and the pilot envi- ronment is noisy, to put it very mildly. The noise is both acoustic and electri* cal. The former is taken care of by ear plugs de- signed to deaden impulse- type sound waves, but the electrical dimension is pure poison for an operating ra- dio system. The electrical noise level varies with the engine in use but typically is moderate to quite high.
When an ultralight pilot or instructor first thinks about radios, the first step is usually a CB hand-held. Such units lack internal noise Irmiters and have poor squelch action and cumbersome antenna sys- tems. The newer "rubber duckies" for 27 MHz have eased the size problem somewhat, but they are poor performers at such a tow frequency. Even with a 5-Watt ground-based unit; the end result is a radio sys- tem that is so noisy and un- reliable that it hardly pays to take it up!
Very compact transceiv- ers (even synthesized hand- heids) are now available for aircraft service (108''136 MHzX but these are AM and have many of the same op- erational limitations as CB units They also tend to be very expensive. But what about FM? FM would solve the electrical noise prob- lem to a large extent and is characterized by effective squelch action as well. Since I already had a syn- thesized mobile rig for two meters, this was a logical place to start. Off to look at hand+ields!
I am definitely not a two- meter freak, so the rig for the plane did not have to be microprocessor-equipped — 1 was not, after all, going
to figure my income tax while aloft, i started to scrounge for an old-fash* ioned crystal-controlled hand-held since these are now considered passe in the better FM circles, A close- out deal of a Pace Commu- nicator MX, complete with rubber duckie, nicads, and charger, seemed the best bet, so off went a phone order to AES in Milwaukee and I had the unit a few days later. A quick check with the wattmeter in- dicated that my 1-Watt transceiver was putting out 700 mW in the high power mode and about 200 mW in low. What the heck, this did not seem to be an applica- tion requiring excessive power and the batteries would last longer. A camera strap was clipped to the securing ring on the hand- held; it went over my shoul- der and I headed for the wild blue yonder.
The results of the first test were mixed On the plus side it soon became obvious that even 200 mW was sufficient for solid communications to the ground mobile, with alti- tude more than compensat- ing for the inefficiencies of that rubber excuse for an antenna. Although the noise of the engine was def- tnitely modulating the downlink signal, the voice audio had no trouble riding over it with adequate intel- ligibility. Reception up- stairs was another matter, however. Between the en- gine noise and the ear plugs, there was no way that that little speaker was going to be heard.
That evening was spent on the bench adding an ear- phone lack. The next morn- ing, complete with an ear- phone, we had a working communications system. My partner was impressed enough by the tests that he is hitting the code tapes and books to join the party. Re- finements now under way include a padded clamp- rack for the radio, a quarter-
Tbe author photographed during a landing approach. Land- ings are typical ty made at tow throttle with pilot weight shifted well forward to keep the nose down and the air- speed up. Note the bent knees to achieve this attitude.
wave whip mounted above the wing, and a "radio hel* met" with a pair of built-in padded phones and a boom mike. Included will be a remote PTT switch on the control bar to minimize the one-handed flying.
Although the system was put together for utility com- munications, it soon be- came obvious that it had great potential for recrea- tional hamming. Take my word for it: If you give a call on 52 from 1500 feet, you will get answered. It's really fun when the crowd discov- ers what you are flying and starts preparing the com- mitment papers while you are still aloft. The crystal complement includes 52 for general hamming, an out of the way frequency for utility communications (never mind where), and a couple of wide-coverage re- peaters for the day I have to set down in someone's back 40 and call in the cavalry.
Obviously, if you are an amateur interested in ultra- lights, you have the conn- munications problem half licked. Although all tests to date have been on two, 50, 220, and 440 MHz would be equally useful although low- er-band occupancy might reduce the recreational potential.
A real interesting feature is the potential for recruit- ing ultralight types to ham radio. Most tend to be high- ly interesting people and we certainly can't complain if we snag a few of those to swell our ranks. Most fliers would like reliable radio systems and amateur radio can provide just that with a little study. An instructor with a ham ticket need only equip students with a pock- et scanner to be able to pro- vide those much-needed in- structions at panic time. The advantages are obvious and the canny amateur will work a deal exchanging code and theory tutoring for flight in- struction.
One of the things that keeps our hobby healthy is the constant search for new modes as well as new appli- cations for existing technol- ogy. There will certainly be lots of ultralight fliers out there — the industry deliv- ered only a few thousand units in 1980, but '81 sales soared quite a ways past 10,000 and most people are still unaware of their existence Who knows, afr mobiles might become quite common. As for me, try 52 and please excuse the background noise — I only worry when it stops!!
73 Magazine * June, 19&4 t^
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Box 242 Suite 500 Blacksburg, Virginra 24060 703/95 1 -9030
$67.95 postpaid {In USA.) Money Back Guarantee Virginia residents add 4% sales tax
TRiONYX INC MANUFACTUBER OF ELBCTRQNtC TEST
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24 73 Magazine • Jun^, 1984
CHAMPAGNE RTTY/CW
Beer Budget
I J
ri
.- 9J<
'SEtf*
^y
r-t tl
I —
u.
.-.;!*»
\
0
-1 Computer Patch^" Interface
The AEA Model CP-1 Computer Patch^" interface will let you discover the fastest growing segment of Amateur Radio: computerized RTTY and CW operation.
When used with the appropriate software package {see your dealer), the CP-1 witi patch most of the popular personal computers to your transceiver for a complete full-feature RTTY/CW station. No computer prog ramming skills are necessary. The CP-1 was designed with the RTTY neophyte in mind, but its sophisticated circuitry and features will appeal to the most experienced RTTY operator.
The CP-1 offers variable shift capability in addition to fixed 170 Hz dual channel filtering. Auto threshold plus pre and post limiter filters allow for good copy under fading and weak signal conditions.
Transmitter AFSK tones are generated by a clean, stable function generator. Plus (+) and minus (-) output Jacks are also provided for CW keying of your transmitter. An optional low cost RS-232 port is also available, The CP-1 is powered with 16 VAC which is supplied by a 117 VAC wall adaptor included with the CP-1.
{^off^lcr F^A£^
9
30 o or?**^'
<
Please write AEA for more detailed information on the CP-1 or better yet. see your favorite dealer and compare.
Prices and specifications subject to change without notice or obligation.
ADVANCED ELECTRONIC APPLICATIONS, INC.
P.O. Box C-2160, Lynnwood, Wa. 98036 ^^
206/775-7373 Telex: 152571 AEA INTL
Brings you the BreakthrougKI
73 Magazine • June, 1984 25
Sam Cf €Aion K6EW 2940 Ariingtcm Aver\ue Fuf tenon CA 92635
Creason's Do-It DVM
The more Sam builds, the more smart people pay attention.
One of the handier pieces of test equip- ment for someone who ex- periments With solid-state analog and digital equip- ment is a hand-held DVM. I recently needed such a de- vice to measure dc and rf voltages. Since I had no need for either ac or Ohms scales, I chose to save a few dollars by building my own. A schematic of the result is shown in Fig. 1.
The heart of the DVM is an Intersil ICL7106 3^1/2- digft single-chip analo^to-
converter [ADQ with on-board liquid-crystal-dis- play [LCD) drivers. Powered by a g^volt battery in the manufacturer's recommend- ed circuit it provides a basic 01999-volt full-scale DVM. Additional components ex- pand the voltage measure- ment capability and drive the decimal points of the LCD.
The components which are grouped at the upper left of the 7106 (pins 27-29, 38-40) support internal functions: an oscillator, ref-
erence generator, auto-zero circuit, and integrator The interested reader should consult a data sheet on the 7106 to learn more about its internal workings.
The components which are grouped at the lower left of the 7106 (pins 1, 26, 30-32, 35, and 36) provide power, a reference voltage, and the means to connect the voltage to be measured. Switched %volt power is ap- plied between V-f and V — , The 22k fixed resistor and Ik trim pot which are con-
40
Rl — iWA
tt 100 SF
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C4
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2f
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KB 90 9 K
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9 09K.
nio
I OIK
IK P^
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39
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1000
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Fig. 1, Schematic of the DVM LCD segmenf-c/rrver pins on the 7106 are shown along with the dmignations of the se^nents which they drive. No pinouts are shown for the LCD, since they vary from device to device. Undesignated resistors are V4-Watt, 5% tolerance. R5 is a 10%- toterance trimmer. R6 through R10 are V4'Watl 1% tolerance, R6 is a 90Sk and nine 1M resis- tors in series. R10 is a Ik and a 10-Ohm resistor in series. Undesignated capacitors are myiar^^. CI is mica. All capackors are 10% tolerance, 100-volt
26 73 Magazine • June, 13&4
nected from V+ to REF LO generate a reference volt- age for the converter The reference is stable because REF LO and COMMON are tied together, and COM- MON is internally clamped at about 2.8 volts below V + , The voltage to be mea- sured (0.1999 volts maxi- mum) is applied between IN HI and fN LO (the latter and COMMON are tied ten gether). A 1 -megohm resistor limits the current which can flow in response to an over- voltege. Together, the 1 -meg- ohm resistor and a 0,01 -uF capacitor form a simple low-pass filter. Taps on the 10-megohm resistive ladder between +IN and —IN pro- vide 1.999-volt 19.99-volt and 199.9-vo!t ranges, se- lected by switch SI a.
With the exception of pin 37, the remaining pins on the 7106 drive the LCD directly. Unlike an LED display, an LCD must be driven by ac waveforms, A dc drive volt- age will bum out an LCD in a matter of minutes. The 7106 applies a 60-Hz 5-volt peak- to-peak square wave to the backplane of the LCD. As long as the same waveform
PROBE TIP
too*
PMOMO
— ®
tOOV
irt^Aizi
fig. 2, Schematic of the rf pftiba
Photo A. Internal construction of the DVM,
Photo B. Some construction details of the rf probe.
is applied to a segment of the LCD, that segment is off. A segment is on when the waveform applied to it is in- verted with respect to the waveform applied to the backplane The 7106 has in- ternal drivers which ac- complish the inversion for the minus sign and each segment of each of the four digits.
The circuit which consists of the CD4030 quad exctu- sive OR gate, SI b, and six re- sistors is needed in order to drive the decimal points. One input of each of the three active EOR gates is connected to the backplane drive signal. Depending upon the setting of SI b, the second inputs of two of the active EOR gates are pulled Jow by 47k resistors tied to ground (pin 37, TEST, is digi- tal ground). These two gates pass the backplane drive sig- nal unchanged, and the cor- responding decimal points am off. The second input of the remaining active EOR gate is pulled high via Sib and a Ik resistor tied to V + , This gate inverts the back- plane drive signal, and the ccHtesponding decimal point is on.
With the possible excep- tion of the LCD, all parts for the DVM are available from the usual mailorder houses. Also available is an evalua- tion kit which contains a 7106, an LCD, the passive components to build the
bam-bones 0.1999^volt full- scale DVM, and a printed circuit board. The compo- nents for the input-voltage divider and decimal-point circuit and the rotary switch and toggle switch must be obtained separatefy. I used a kit for the convenience of die PC board. However buy- ing the individual compo- nents and assembling them on a piece of perf board will cut the cost significantly.
Photo A shows the inter- nal construction of the DVM. About V2 ' of the PC board which is suppfred in the evaluation kit is cut away. The cut is made at the upper edge of the pads which accommodate the in- put jacks. A 1 " strip is then cut from the bottom of what remains of the PC board and reconnected at an angle of 90 degrees. Lengths of no. 20 wire restore the connections and provide mechanical support for the strip.
All capacitors except the
mica device are nnounted on the rear of the board A piece of perf board contain- ing the resistive ladder for the input circuit and the decimal-point driver circuit is mounted 1/4" behind the PC board, on fiber spacers. The PC board is mounted 3/8" behind the front panel by means of additional fiber spacers. The entire assembly is held together by 6-32 hardware. The enclosure measures M/4" long by 3-3/4" wide by 2" deep and is of unknown brand, A simi* lar-size mini-box would be a suitable substitute. If a larger enclosure is accept- able, the PC board may be left intact
Fig. 2 is a schematic of the rf probe, which consists of a resistor, two diodes in series, and a disc-ceramic capaci- tor. The measured value of an rf waveform corresponds well to the value indicated on the DVM when a 100k resistor is used. A 4.7-meg-
Pwtft List for Rf Pfobe |
||
Par! |
Value Part number |
Cost |
CI |
0^1 uF, 50 voft DC.01/5CKJ) |
.08 |
D1,D2 |
1N34A 27B-1123(FB |
JO |
J1 |
274-346(F^ |
.45 |
Alligator clip |
27M78(R) |
.13 |
Heat-shrink tubing |
278^1 627<R) |
.50 |
Phone tip |
274-723(R) |
.50 |
Copper tubing (local hardware store) |
.50 |
|
Pirti LM tar Dc Probe |
||
Part |
Part number |
Cost |
Coaled test leads |
278^760(R| |
o<Irt |
ohm resistor might seem the correct choice, given the 10-megohm input imped- ance of the DVM. However, the ADC is an integrating de- vice which will directly give the rms value of the recti- fied waveform. Two diodes are used in series to allow measuring rf voltages as high as 30-40 volts.
Photo B shows some corb stnjction details of the rf probe. The capacitor is just behind the body of the probe tip, a Radio Shack 274-723 solderless probe tip which is cut to 1-3/4'" overalL The component assembly mea- sures 4" from the center of the large portion of the phono plug to the opposite end of the probe tip. The shield for the probe is a 4" length of 3/8"-i,d. copper tubing. The lead from the ground clip is soldered into a notch at the end of the tubing. Taping a 1" "U" into
Vondbfs For Parts
For part numbers marked (FO:
Radio Shack— local For part numbers marked (J);
Jameco Electronics
1355 Shoreway Road
Belmont CA 94002
(Minimum order $10.0€fl For part numbers marked (E):
Electronic Supply Co.
2486 3rd Street
Riverside CA 92507
(minimum order $5,00) or
Dlgl-Key Corp.
PO Box 677
Thief River Falls MN 56701
73Magazme • June, 1984 27
Puts not In Evaluatkxi KH
Pari |
Value |
Part nucnlMr |
Cost |
R6 |
9.09 meg |
1M(E> |
4.50 |
g0.9K(^* |
^ |
||
R7 |
909k |
909K(E) |
.50 |
R8 |
90i9K |
90.gK(E) |
.50 |
R9 |
9.09k |
g.09K(E) |
50 |
RIO |
1.01k |
Mm |
50 |
10 Ohms (E)** |
.50 |
||
R11-R13 |
Ik |
271-1321 (R) |
J» |
R14-R16 |
47k |
271-1342(F^ |
.06 |
Battery conr>ector |
-(J) |
.10 |
|
Case |
270€27(R> |
?.■» |
|
Battery, 9-vQlt |
2a464(FD |
59 |
|
S1,2-pote, 3i>osmon |
275-1386(^1 |
1.19 |
|
S2,SPST |
27561^ |
1.69 |
|
Knob |
274^15(R) |
.40 |
|
14i3tn DIP socket |
-(J) |
.17 |
|
Hookup wire, #22 stranded |
278-1307(03 |
i19 |
* 90,9k and nine IM in series; J4.50 Is cost of nine resistors,
•*1k and 10 Ohms in series*
For R6 through RIO, prefix part number with TRW/IRORNSSD,
the lead avoids stressing the solder joint
The first step in assenv bfing the probe is to tape the exposed leads. Then the component assembly is slipped into the copper tub- ing so that the free lead
from the 1N34A lies on the solder joint of the lead from the ground clip. The phono jack is soldered in two or three places. When the tub- ing has cooled, the free end of the diode is quickly soldered into the notch.
SubslHutes for Parts In Evaluation KK |
1 |
||
Part |
ValiM |
Part number |
Coat |
Rt |
100k |
271-1347{f^ |
m |
R2 |
47k |
271-1342(R) |
j06 |
R3 |
27k |
271-1340(R) |
M |
B4 |
1 nneg |
271-1356(i^ |
.06 |
R5 |
Ik, variable 43P-1K(J) |
1.19 |
|
C1 |
100 pF |
DM15-101J(J) |
.35 |
C2 |
0.1 |
MY.1/100(J) |
.27 |
C3 |
0.47 |
MY.47/100(J) |
,45 |
C4 |
0.22 |
MY.22fl00{J) |
;33 |
C5 |
0.01 |
MY.01/100(J) |
,12 |
Perfboard |
84P44W^ |
Z95 |
|
A/D oonvertef/drjver |
ICL7106CPMJ) |
9.95 |
|
Banana jacks 0 |
274-725^ |
m |
|
Battery holder |
270<}26(H) |
30 |
|
4&pin DIP sockets |
-(J) |
.49 |
|
aVfdlgit LCD |
|||
Unless othenwise £ |
shown, resistors |
are % W, 5%, |
cart>on. |
100-pF capacitor is dipped mica; others are mylar™, 100 V, with |
|||
values in microfarads. Cut one 40-ptn |
socket In half, lengthwise. |
||
to accommodate width of display. |
Evaluation kit 7106EV/Kit |
||
may be obtained from Jameco Electronics for $34.95. |
Finally, a piece of heat- shrink tubing is used to cover the tubing. The cable for the probe consists of a piece of RC-174 coax with a phono plug at one end and a pair of banana plugs at the other.
Once the DVM is built calibration is simple. Select the appropriate range and connect a known dc*voltage
source. Adjust R1 until the correct value is displayed. A new 1 .5-volt battery is a con- venient source. ■
/I/IIR/1GE
Introducing the New
B215 2 Meter
Solid State Amplifier
from Mirage Communications
2 Watts In — 150 Watts Out
$289.95
Built-in Rx Preamp
AU Mode-SSB, CW. FM
Remote Keying
DC Fdwer 13.6 VDC at 18 Amps
5 Year Limited Warranty
Optional RC-1 Remote Control Avallal
Afade in the U.SA
Available at Mirage Dealers Worldwide
/VlliVIGE
COIMMUNICATIONS EOUIPIMENT.INC.
P.O. Bo.\ 1000, Morgan Hill. CA 95037
(408) 847-1857
73 MBgazfne • June, 1984
NO SHIPPING CHARGES!
TUBES
T¥Pf |
PHJCE |
Trre |
PRICE |
TYPl |
pmct |
2C39 7289 |
S 28 90 |
813 |
$42 50 |
7643 |
S 90 95 |
3E2« |
e75 |
1182.4600 A |
42500 |
7854 |
11050 |
2Kia |
17000 |
4600A |
425 00 |
ML7855KAL |
106 25 |
3-500Z |
86 70 |
4624 |
263 50 |
7M4 |
12 70 |
3-lOOQZai&4 |
34000 |
4657 |
7150 |
6072 |
7150 |
3B2Q/aG6A |
a to |
4662 |
esDo |
6106 |
4 25 |
3C!<4aDU7^6961 |
21S0O |
46iS |
425 00 |
81 17 A |
191 25 |
3C5<lOOOA7/8283 |
447 00 |
5675 |
36 00 |
8121 |
9350 |
3C X 3000 F 1/8239 |
482 00 |
5721 |
2t5 50 |
6122 |
93 50 |
3CW30000H7 |
1445 00 |
5766 |
106 25 |
8134 |
399 50 |
3X25O0A3 |
402.00 |
5819 |
101 00 |
8156 |
1020 |
3X3CffiOF1 |
482 OO |
5A36 |
IMDO |
8233 |
51 DO |
4^0SA/StaS |
sees |
5637 |
198 OO |
3236 |
29 75 |
4-1?SA/402i |
67*5 |
5861 |
119.00 |
8295 PL 172 |
425 00 |
4.2S0A/5D22 |
83 SO |
5867A |
157 25 |
8458 |
29 75 |
4-4Q0A/a43a |
83 50 |
S869/AX9902 |
^29 50 |
8462 |
110 50 |
4-4009/7527 |
§3 50 |
5875/ A |
35 70 |
6505A |
80 75 |
4-400C/6775 |
93 50 |
5851 /6L6 |
650 |
8533VW |
1T5.60 |
4.1 000 A. 8166 |
37? 50 |
5693 |
51 OO |
8560/A |
63 7S |
4CX250a?203 |
46 00 |
5894^ A |
46 00 |
8560 AS |
85 00 |
4CX?S0FG ftfiSi |
63 75 |
S894B873I |
46 00 |
3606 |
32 30 |
4CX250IO824S |
t02 25 |
5946 |
335 75 |
6824 |
65 00 |
4CX?5aR 75aow |
75 50 |
6083 AZ»00 |
80 75 |
0637 |
59 50 |
4C^3O0A.8l67 |
144 SO |
6146 6r«8A |
7 25 |
6643 |
70 S5 |
4C?<350A.83^^ |
93 50 |
6146B/6298 |
90O |
3647 |
142 80 |
4CX35QF/e3?2 |
97 75 |
6l4eW'72T2 |
14 75 |
8683 |
8075 |
4CX350J^J.a904 |
naOO |
61 56 |
S3 50 |
8877 |
39525 |
4CX600J 8809 |
7TOO0 |
6159 |
n 75 |
8900 |
n 05 |
4CX10QOA.81&8 |
206 00 |
6159B |
20 00 |
8950 |
1105 |
4CX10C»A.ftt6a |
412 25 |
6161 |
276 25 |
8930 |
116 50 |
4CX15CI0B 8^60 |
471 00 |
6260 |
36 25 |
6L6 Meeii |
2125 |
4CX5000A.8170 |
935 00 |
6291 |
153 00 |
eiSGC |
425 |
4CXlOOOOO.»t7t |
1067 00 |
6293 |
20 50 |
6CA' EL34 |
460 |
4CX 15000 A/ 8281 |
1275 00 |
6360.' A |
455 |
6CL6 |
300 |
4CW600F |
603 SO |
6399 |
459 00 |
6DJB |
2 T5 |
4D32 |
204 OO |
65SOA |
8 50 |
eoos |
5.60 |
4E27A5-125B |
204 OO |
6B81B^ 803^ A^ 8552 |
8 50 |
eGFS |
5O0 |
JPflSOA |
170 50 |
6697 |
136 00 |
6GJ5A |
5 30 |
4PR»)e |
283 2S |
6907 |
67 IS |
6GK6 |
5 10 |
4pfieSA.STfl7 |
*48 7S |
6922 6 DJB |
4 25 |
SMes |
5 10 |
4ri^1000A.St39 |
50150 |
6939 |
16 75 |
6HF5 |
7 45 |
4XTS0A.rCI^ |
5100 |
709* |
212 50 |
WG6A |
535 |
4Xf50D/760d |
81 OO |
7t17 |
32 75 |
6JM6 |
5 10 |
4X2S0a |
38 25 |
72t1 |
85 00 |
fijN6 |
5 10 |
4X2S0F |
38 25 |
72T3 |
255 00 |
Ejsec |
615 |
4X500A |
350 00 |
7214 |
25SOQ |
6KN6 |
4.30 |
5CX15430A |
&6100 |
7271 |
11J 75 |
6KD6 |
700 |
KTea |
23 50 |
7289^2CJ9 |
26 90 |
6LF6 |
5 95 |
4TSd |
30 26 |
7360 |
11 50 |
6L06GE: |
5 95 |
41&C |
53 00 |
7377 |
72 25 |
6L06 GMJ& SyUtrria |
765 |
572B TT60i |
42 50 |
7408 |
2 10 |
6ME6 |
755 |
592 3 -200 A 3 |
170 SO |
7609 |
80 75 |
12AT7 |
30O |
807 |
7 25 |
7735 |
30 SO |
12* X7 |
2 55 |
en A |
12 75 |
ML/BISAL |
51 DO |
12BV7 |
4 25 |
812A |
24 75 |
T2JB6A |
5 50 |
R F TRANSISTORS
2N1561 |
21 25 |
2^S4426 |
1 57 |
2N5913 |
2 75 |
MnFZ23 |
2N1562 |
21 25 |
2f^4430 |
10 03 |
2NS§16 |
30 60 |
MRF22J |
2N15E2 |
19 99 |
2N4fS7 |
2 93 |
2N5922 |
8 50 |
MBF231 |
2IM1692 |
21 25 |
2N4f59 |
1 95 |
2NS923 |
2125 |
MfiF232 |
2N2flS7JAN |
3 49 |
2 N 5090 |
11 73 |
2NS941 |
1955 |
MRF233 |
2N2657JANTH |
3 49 |
2N5106 |
2 93 |
2N5944 |
880 |
MRF237 |
2N2876 |
11 4i |
2N5T09 |
145 |
2N5945 |
980 |
MRF236 |
2N2947 |
15 60 |
2N5160 |
2 95 |
4gL|4jL«Jt |
1225 |
MRF239 |
2I^94« |
11 05 |
2^5177 |
1840 |
2Nm90 |
660 |
MRF245 |
i^l2»4i |
13 19 |
2N5179 |
0 88 |
2N6081 |
10 25 |
MRF247 |
2N2957 |
1 32 |
2N5f26 |
47 60 |
2N60a2 |
10 75 |
MRF304 |
2N3375 |
14 55 |
2N55S3 |
295 |
2N6083 |
11 25 |
MRF309 |
2N3553 |
1 32 |
2 N 5589 |
8 30 |
2N6084 |
12 75 |
MPF3T4 |
2 N 36 32 |
13 19 |
2 N 5590 |
9 30 |
2N6094 |
9 35 |
.MRF315 |
2N3733 |
9 35 |
2N5591 |
n 75 |
2N5095 |
T020 |
MNF317 |
2N3618 |
4 25 |
2IM5637 |
T3 20 |
2^6096 |
1370 |
MfiF<20 |
2 N 3666 |
t 10 |
2NS641 |
to 55 |
2^(6097 |
1760 |
MFfFJ2! |
2N3666JAM |
1 67 |
2N5642 |
Tits |
2f«i05 |
1765 |
MRFJ22A |
2 N 3924 |
2 85 |
2N5643 |
13 20 |
2M6136 |
16 55 |
MBF427 |
2N3927 |
14 65 |
2N5645 |
11 75 |
2N6166 |
34 20 |
MPF428 |
IN 3950 |
21 25 |
2^^5646 |
17 59 |
2N6201 |
42 50 |
MRF433 |
2N4012 |
9 35 |
2N5651 |
9 39 |
2N6304 |
1 35 |
MFJF449A |
2N4041 |
11 90 |
2N5691 |
1530 |
2N6459 |
1530 |
MRF450A |
2N4072 |
1 53 |
2NS7@4 |
22 95 |
2N6567 |
A 55 |
MRF453A |
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1230 |
MRFSOi (3 LEADSJ |
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WFEF901 M LEADS) |
17 10 |
M^F^OA |
1360 |
WHF911 |
17 60 |
MRF961 |
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Meeting Ends Make
These ten tips will better your club. Are you friendly or frigid?
Recently, a ham I know moved to an area which has two ham clubs. '*And they're both mighty big bombsf" he told me,
[ asked him what he meant
"I went by myself to the club meetings — they were on different nights, of course. When I arrived, at both clubs, there were about 20 members already there, shooting the breeze in smalf groups. Man^ w&^e they un- friendiyr
But, of al[ the problems hams face, are unfriendly clubs worth worrying about?
If you need statistics, the answer is that no one knows. While there are more than 2,600 amateur-radio clubs in the United States, no one keeps score of just how many could be rated "un- friendly/'
But if you ask — as I have— a number of hams who move often or who travel frequently and visit local clubs, you, too, may be surprised at just how wide- spread the problem seems to be.
30 7B Magazine • June, 19S4
Ask for example, hams who belong to such clubs as the Naval Postgraduate School Amateur Radio Club in A4onterey, California. Most of the members are service personnel who move to new duty stations every couple of years or so, joining new clubs across the country and abroad. Several members of the Monterey club have told me of their firsthand experi- ences about just how friend- ly or unfriendly some clubs are.
Yet ifs a problem that's
hard to pinpoint
Many hams are reluctant— understandably — to name clubs or even cities in which they feel clubs are unfriend- ly. As one unhappy member put it "No use me mention- ing names and making them still more unfriendly!"
Yet every example and quote in this report came from hams who have faced frigid receptions at various ham clubs.
Another reason the prob- lem of unfriendly clubs is hard to pinpoint is that what
makes a club seem unfriend- ly to one ham may lead an- other to consider that club as desirable. One newcomer told me, "When I went to my first meeting at this one club, no one even asked me if I wanted to join/' But another ham said, "I don't like clubs which try to push you into joining the first time you come,"
Still, in spite of such con- flicting views and the lack of data on how many clubs could be rated ''unfriendly/' there are enough hams tell- ing horror stories about un- friendly clubs to suggest it might be wise for all ham clubs—and their members — to take a careful look at themselves, to make sure they do in fact make new- comers feel welcome.
From listening to hams who belong to a variety of amateur-radio clubs in dif- ferent cities, I've identified ten tips on how to make and keep your club "neighbor- ly," to use the word of a young ham from Iowa I talked with recently.
The first tip came from an
experience told to me by a ham on the day after his first visit to a club.
"I walked in at 7:25 pm, five minutes before the meeting was to start. A cou- ple dozen members were al* ready there. A few of them were talking to someone next to them. The rest were silent— just sitting there, not saying a word. Only a few glanced at me as I stood at the door, trying to figure out where to sit No one invited me in. Not a one said any- thing to me or even gave me a nod."
Tip #1; Ham dubs should rfesfgnafe fwo or so of their members to be greeters, to welcome newcomers.
Greeters don't have to be — shouldn't be — formal They don't have to stand at the door, wear neckties and jackets, have a set patter, es- cort newcomers during the entire meeting, or such. In- stead, greeters should sim- ply keep an eye on the club- room door as they mix with other members; when they see an unfamiliar face, they
should go over immediatefy, introduce themselves, and initiate the usual ham talk. Such face-toface meetings need not be much more structured than the usual on-the-air QSO.
Once the greeter has learned a few of the special interests of the newcomer, he or she should introduce the guest to another mem- ber With similar interests. The point is, of course, to make sure first-time visitors are not left on their own to search out members with whom they may feel com- fortable.
To prod my friend to tell me more about that club which ignored him as he walked in to its meeting, I asked, ''So what did you do?"
"There were just three
empty chairs. They were all together, at the far end of the table. 1 walked down to them. No one asked me to sit or anything. I waited a few seconds and then sat down. The guy next to me gave me a glance and then went on with his small talk to the ham across the table/'
I prodded again: "Not very friendly, huh?"
"After waiting what I thought was a proper length of time for a break in tfie chatter, I introduced myself to the two guys. One said 'Hi/ gave me his call, and went on with his talk about the weather or something/'
Tip #2: All dub members should be urged to talk with newcomers^
This is so basic it's almost embarrassing to mention. But of course the problem is not that hams are socially unsophisticated, not know- ing that they should talk to others. Rather, many of us get so involved in our own discussions of hamming that we may ignore others.
Hams, like many people everywhene, can benefit from increasing their sen- sitivity to the interests and needs of others, especially to newcomers. That will not
only make recent an^ivals feel welcome, but also it will help you feel better As American humorist Philan- der )ohnson wrote, "New friends leave the heart aglow/'
My friend's concern about unfriendly ham clubs sound- ed deep, so I urged him on: "Meet anyone later in the meeting?"
"The meeting started out with the usual self-introduc- tions. You know, they went around the room, each ham giving his or her name and call. When it came my turn, I said just what the others had— -my name and call — adding that I'd just moved into the area/'
"Did that spark any inter- est?"
"Not a bit The self-intro- ductions continued."
Tip #3: Make all introduc- tions worthwhile.
Many clubs open meet- ings with self-introductions which are given quickly and briefly; many are muttered, some are embellished with bits of "in" humor, getting laughs from only a few. Such self-introductions become so routine they are close to meaningless.
I asked several long-time members of various clubs, "What good are those intrch ductions?" Answers were limited.
"Gets members partici- pating/' (Saying just three or so words equals participa- tion?)
"We get to know who's here;" (To find that out most members have already looked around long before the self-introductions.)
"Lets everyone have a moment in the spotlight" (Hams, with all their distinc- tive skills and achievements, need that?)
Introductions should not take much time of a meet- ing, but they should be valu- able. Members should be encouraged to speak slowly, clearly, and add a few words about their recent activities, interests, or such Setting a
limit IS wise— the member- ship guide for one group states, "No more than 20 words"
One good technique for improving introductions was suggested by Gene Piety KH6PP, now living in Santa Cruz, California:
Tip #4: Have a greeter in* troduce newcomers.
Only a few words are needed: "Here's a ham new to our area, interested in
home-brewed rigs. He^s just moved here from (. . I His
name is (,,.); his call Is
An interesting technique to add friendliness to clubs was initiated by Bill Webb NK6H, of Monterey, Califor- nia, when he was president of his focaf ham club:
rip #5; At each club meet- ings have one or two mem- bers give, say, a S-minute autobiography, preferably with slides^ artifacts^ or such^ detailing their shack and their interests beyond hamming.
These, of course, should not be formal speeches. Brevity is the key.
There is the problem that some members may be hesi- tant to give such talks. Per- haps they overlook the fact that when they're A3-ing, there may well be far more people listening than are at their club meetings. So start by asking those members who seem to like to get up and speak. Also ask frequent- ly for volunteers — that ap- parently shy one may well be masking a stimulating speaker! After a few mem- bers have presented them- selves, most of the others will usually want to take part, too. Certainly some may be strictly against get- ting up to give such talks, but there's no need to pres- sure them into participating.
Another idea to help clubs welcome newcomers came from this story told by a ham in central Califor- nia—thafs as close as he wanted to identify this club.
"After my first meeting, when I got home, ! realized I really hadn't teamed much about the club. Sure, I heard the treasurer's report— they had several hundred dollars in the till. But since they didn't say what activities they're into. I couldn't tell if they had money or not The president said the newslet- ter gave details about an up* coming field day, but I didn't see a copy— they were mailed to the mem- bers' homes. And I met a couple of guys, but too fast for me to remember all their names and calls "
Tip #6: GfVe information packets to newcomers.
The packets should in- clude, at the very least: I.List of members with their calls, addresses, and phone numbers.
2. List of committees — members and tasks,
3. Minutes of the last few meetings.
4 Copies of recent news- letters. 5- Schedule of activities.
6, Repeater frequencies for the area.
7, A copy of the club's constitution.
8, Instructions on joining.
Other materials some or- ganizations give to new members— although I know of no ham clubs which pro^ vide these — include:
1. Local sources for equips ment parts, services, etc.
2. List of names of mem- bers' spouses and chil- dren (helps develop fami- ly involvement).
3. History of the club.
4. A few copies of articles about the club — say the top three articles pub- Ibhed in the last year or so.
Here's the experience of another ham. Ifs valuable because it points to another tip to help ensure that visi- tors don't come to just one of your club's meetings and then never show up again.
"The club's secretary gave me an application form for foining the club. I
TSMagaiine • June, 1984 31
thought that was a nice touch. Later, I read the ap- plication. It included a state- ment 1 was to sign, agreeing to abide by all provisions oiF the club's constitution. That seenied overly formal, but ! figured, well, maybe they have a good reason for that provision. Only they hadn't given me a copy of the con- stitution. And when I asked for a copy, I was told it was being revised and would be ready in a month or so, but not to worn^, just go ahead and sign anyway/'
Tip #7: Give newcomers a copy of the constitution^ ruhSf by'ldws, or whatever guides your club.
Even if your constitution, for example, is being re- vised, prospective members should be given a copy of it so they'll know the ground rules as they are at the mo- ment Many prospective members consider such doc- uments quite seriously. They like to know what they're
getting into— how decisions are made, dues increased, leaders selected, and such. They don't agree with the advice of American writer George Ade: "To ensure peace of mind, ignore the rules and regulations/'
An officer of one ham club I visited handed me an application form on which two members were to sign as "sponsors" of new mem- bers. But since I didn't know anyone in the club and since neither that club officer nor that form told me how to get sponsors, membership seemed to be blocked. Therefore:
Tip #8: If new members are to 6e sponsored by estab- lished members^ make sure information on how to get sponsors is readily availaUe.
Of course, if a member brings a newcomer, he or she most likely would be a sponsor and would usually help find additional spon- sors, if needed. But clubs
which require sponsors should have a method for providing them for prospec- tive members who come on their own to a club's meet- ing. Creeters or club officers might be appropriate spon- sors.
Another problem for new- comers is highlighted on the second page of The Radio Amateur's Handbook: "One of the first obstacles for a person seriously interested in amateur radio is finding a local amateur to provide as- sistance. This volunteer amateur is called an 'El- mer/" (Emphasis added by author,)
Finding an Elmer should certainly not be an "ob- stacle/'
Rather, an Elmer should be immediately available to every newcomer— to pro- spective hams, to new hams, and— just as important —to established hams who move into a new area.
But there's an additional problem with many Elmers
today. They may tell a new- comer something such as, "If you need help, give me a ring."
Thafs not really much of an offer of help. Elmers should do more than that One good example is J. V. Rudnick K6HJU of Felton, Caiifomia, who has been El- mer to scores of hams. He drops by a new ham's shack a few days after they meet He comes with tools, ready to spend a few hours, if needed, to help find electri- cal interference, check out a new rig, select an antenna location— all examples from his recent Eimering.
Tip #9: Ensure that every prospective member gets an Elmer — an active Elmer, a real Elmer,
Finally, the essential tip:
Tip #10: Evaluate your club and yourself: How do you think newcomers would rate youf
Are you and your club friendly or frigid? ■
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Tester Project: England '83
Wherein you flash-chance transistors, chap.
Repffntsd by perrrtisslon from the May, 1983, issue of Radio £ Eieo tronics World, 200 North Service Road, Brentwood, Essex, CM 14 4SG, England. The transistor tester was designed by R A. i=^nfold, \2 The Crescent, Hadleigh, Benfteet, Essex, SS7 2HF,
Transistor testers normal- ly fall into one of two categories: basic units where a flashing light indicates ser-
viceable devices, or calK brated metering circuits which give a rough indica- tion of current gain. Our de-
CIRCUIT DESCRIPTION
The full circuit diagram of the transistor tester Is shown in Rg. 2, The LF oscillator is a straightforward 7555 astable, o(> erating at a little over t Hz. ICI is a CMOS version of the 5^, used pfimarily t>ecause of its low current consumption. In or- der to permit the use of very simple NPN/PNP switching, sep- arate NPN and PNP test sockets are used, as well as separate zener stabilizers and base resistors. In the prototype, there was a tendency for very high gain PNP transistors not to cut off properly due to the output of IC1 going slightly less than fully positive on the appropriate output half cycles. This prob- lem was completely overcome by making R4 and R5 a little higher in value, and adding R3; which have no significant ef- fect on circuit operation In other respects.
The ciosed*loop gain of the circuit Is accurately set at unity by RIO and R13. R6, R7, R1 1 , and R12 are cbse^tolerance com- ponents so that consistent results are obtained when moving from PNP mode to NPN.
RS and R9 form the load resistance for NPN devices, while R14 and R15 a/e the load resistance for PNP devices. The val- ue of R15 sets the operatingHcurrent range of the unit. It varies from about 450 uA^ with one LED switched on, to around 12 mA with all ten activated. This gives a reasonable operating current for low gain devices, whilst removing the need for ex- cessive current flow when high gain transistors are t>eing tested R14 is added In serl^ with R1 5 merely to provide addi- tional current limiting If a clo$dd<:ircult device is checked.
Switch SW1 is all ttmt is required to give NPN/PNP switching. It switches the input of the display circuit to either the output of IC2 or the PNP-col lector test socket (note that iC2 has a class A output stage which enables its minimum output volt- age to swing down to near the negative supply potential).
The display driver Is an LM3815N integrated circuit (IC3J, which Is similar to the popular LM3914 device. The LM3914 has ten linear LED threshold voltages, whereas the 3915 has a logarithmic scale with the LED threshold voltages at 3^ B In- tervals. ITiis enables a wider range of current-gain values to be covered, with ti^ maximum value being about thirty times higher than the minimum, R16 controls the LED operating cur- rent, and the specified value provides around 4.5 mA.
sign is really a cross between these two. it uses a flashing 10-LED bar graph to indicate whether or not the transistor is usable— the number of lEDs activated gives an indi- cation of current gain. This novel system enables checks to be made very rapidly and easily, as well as providing more reliable and informa- tive results than a single- LED tester.
Design
The basic setup used In the transistor tester is shown in Fig. 1, Schematic (a) shows the block connections for testing PNP transistors and (b) shows the slightly differ- ent arrangement needed when checking NPN devices.
Looking first at the PNP mode, a low-frequency os- cillator drives the base of the text device via a resistor which sets the base cur- rent The transistor is thus
switched on only when the output of the oscillator is in the low state (it is cut off when the output is high). A zener diode is used to give a stable output voltage from the oscillator so that a rea- sonably stable base current results.
The bar-graph driver and display are fed with the volt- age developed across the collector load resistor. Cir- cuit values are chosen so that a very low gain device produces only sufficient voltage to activate one or two LEDs, while a very high gain device will activate all ten. So, with a serviceable device being tested, the LED display should flash on and off, and the number of LEDs will indicate the gain.
In the NPN mode, an os- cillator, zener stabilizer, and series resistor are again used to pulse the base of the test transistor with a reasonably
»LED ftJUWUPH
m%
■*Mr-
-n
Fig, 1. The two basic circuit configurations for testing NPN and PNP transistors.
34 7^ Magazine • June, 1984
(
stable current However, there is a minor complica- tion in that the voltage de- veloped across the load re- sistor is relative to the posi- tive supply, whereas the bar- graph driver requires an in- put voltage referenced to the negative supply rail A unity-gain inverting amplifi- er is therefore used between the load resistor and the dis- play driver to give a suitable input signal for the latter.
Construction
Practically all the com- ponents are fitted on the printed circuit board, the only exceptions being the battery and the sockets. De- tails of the PCB wiring are pfDvkled in Fig, 3, If the spec- ified case is used, the two cutouts in the corners of the board are necessary to mount flush with the pillars inside the case.
It is essential that the nnounting holes for SW1 and SW2 are accurately posi- tioned on the front panel. One way of ensuring a good fit is to use the board as a
5W2
' ikr^i'<k<k<kik(k<k>^
OuJMt
ALL 41tM
Fig. 2. Complete circuit of the tester.
template. It is probably best to Initially drill small guide holes of about 1 mm in di- ameter
Construction of the PCB is quite easy, but note that IC2 has an MOS input stage. Although lO is a CMOS de- vice, it does not require any special handling precau- tions. The tags of SW1 and SW2 should be pushed right down into the board before these components are sol- dered into place.
The test sockets are two
Fig. 3. PC board, foil side.
groups of three 1mm sock- ets, and provided each set of three is tightly grouped, it will be possible to fit most transistors directly into these without difficulty. A set of test leads can be used to make connections to transistors that will not plug into the sockets. The tags of the sockets should be bent
at right angles so that they do not come into contact with the PCB when it is fitted into the case.
Operation
In use, the mode switch is set for NPN or PNP, and the test device is connected to the correct sockets. If the device is functioning prop-
Photo A. The transistor tester.
Photo B. inside the transistor tester.
73 Magazine • June, 1964 35
D5 D4 05 Oe 07 DB 09 010 Oil DIE
t M t t t t t + t
9 * V
ei-VE C 6 £
Fig. 4. PC board, component side.
eriy, the LED display should flash on and off with a suit- able number of LEDs being switched on. It is a good idea to test a number of transistors of various types, which are known to be fully operational, so that you know the approximate num- ber of LEDs that should be activated when testing a sus- pect device.
If the LED display lights continuously, this indicates that the device under test is closed circuit but check to be sure that SW1 is in the right position and that the device is connected correct- ly. If not alt of the LEDs switch off, this indicates that the test device is faulty and has a high leakage level, but again, check that It is
connected correctly and
that SW1 is in the right posi- tion. Also, do not hold the transistor in the test sockets touching the base and col- lector leads. This could sup- ply a small current into the base of the component giv- ing a high enough collector current to activate one or two LEDs. If the display fails to light at all, it indicates
Parts List
Resistors
V< W, 5% unless stated othefwis©
R1 |
22k |
R2 |
6.8 megs |
R3 |
27k |
R4, 5, 16 |
2,7k |
R6.7,10, 13 |
100k (1%) |
Ra,15 |
100R |
R9, 14 |
180R |
R11,12 |
10k (1%) |
R17-26 |
470R |
Oapacltofs |
|
CI |
10uF,25V |
C2 |
100 nF mylar™ |
Semiconductors |
|
IC1 |
ICM7555 |
IG2 |
CA3140E |
IC3 |
LM3915N |
D1,2 |
BZYS8C5V6 |
LEDl-10 |
(3mm red LEDs) |
Miscellaneous
SW1 , 2 SPOT min toggle switch B1 B-volt battery
SKI, 2 1mm wander
Sockets (S66 text), plastic case (120 X 65 X 40mm), battery con- nector, PCB, pinSp wire, etc.
that the transistor under test has gone open circuit ■
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3$ 73 Magazine • June, 1984
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Two Texans put together '73 Morse R/T/' It's the best Basic VIC-20/C-64 code program you will ever see.
Three things plague Morse code transmit/receive pno- grams. First the good ones are expensive. Second, the inexpensive ones don't gen- erate good-sounding Morse, Finally, most Morse pro- grams you enter yourseif are in Basic and are too slow to generate or copy well- spaced Morse.
So what have we here? True, it's Basic that you must enter yourself, but be- fore you dismiss it as just an- other Morse program, corv sider that "73 Morse R/T" has been carefully assem- bled to make maximum use of Commodore Basic.
Because variabfes im- prove program speeds, the program sections using nurn* bers have been created to use the faster variable meth- od. Morse s pacings have been carefully guarded, and this program generates the best-sounding code possible in Basic at speeds from 5 to 50 wpm.
73 Morse Receive/Trans- mit allows type-ahead buffer- ing of up to 255 characters and three (or more) 255<har' acter message buffers into which may be placed a CQ, station brag tape (rig mes- sage), and QTH information.
Additionally, a simple in- terface schematic is includ- ed in this article. With it, your Commodore VIC-20 or -64 can be connected to your radio and be used with 73 Morse R/T on the air.
Two items of caution be- fore describing this program in detail. First, if you make program modifications, add no line number preceding line 200, Any line appearing prior to 200 must be pro- cessed between each char- acter sent by the program and even a Remark state- ment will deteriorate the sound.
Second, we suggest you avoid attempting to enter the Receive mode of this program until you have con-
ifsefr //9 Ptmr
structed the interface. If you engage the Receive option without an interface at- tached, 73 Morse R/T will lock and you will be unable to return to Transmit. Until you have constructed the in- terface (or attached a suit- able one), place a Remade [REM:) at the beginning of program line 255 to prevent the lockup. Remember to re- move it when you connect an interface.
73 Morse Receive/Trans- mit supports the following amateur CW prosigns:
osign |
Key |
AR |
) |
KN |
^ |
SK |
— |
AS |
@ |
BK |
* |
BT |
— |
In addition, Morse error (eight dits) is sent when Re- turn is depressed or an unde- fined key is struck. The
Run/Stop key is an excep- tion and acts as a Break key; if accidentally depressed, type 'CONTtinuer-
This program features a 255-character keyboard buff- er. If the 255-character limit is exceeded, excess entries will result in the ''string too long" error message. Should this occur, enter "CONT" to resume.
The Delete key may be used in the normal manner to make changes and cor- rections, providing the char* acter to be corrected has not been or is not being transmitted at the time of the attempted correction.
A transmission may be aborted by using the Clear/ Home key, but can be called only from the Transmit mode. Exercising this func- tion resutts in a clear screen and loss of the buffer con- tents*
Six 255-character buffers
ULL RtSISTgnt' 1/4 WATT
t/sff^ i^v fo/rr
WnOM
ftl
Fig. 1. 73 Morse transmit schematic,
38 73 MBgmzine « Jur^e, 19&4
Fig. 2. 73 Morse receive schematic.
are included with 1?^ Morse R/T, All are accessed from the Function Keys on the right side of the VIG20 or
-64. E artier, only three were mentioned. The reason for this is that to be useful, one buffer must hold the station caltsign input another the callsign of your station, and the third an HW CPY (ink.
Although more than sug- gested data could reside in the preceding three buffers, their function limits the length of the contents. Feel free to change the contents of any buffer (Function Key) as you wish. Details of how this may be accomplished can be understood from reading the following docu- mentation sections,
FT will send the message contained in program line 310, which in this case is CQ. Any message up to 255 char- acters in length may be placed in this buffer You are limited in line length, however, to the default lim- its of your computer (88 on the VIG20. 80 on a -64), If your message exceeds these lengths, it is suggested that you add a second line num- ber (in sequence) to com- plete your message, as illus- trated in the link example in program lines 360 and 361. Notice that GOTO 45 ap- pears at the end of the last line of buffer text only and that line contents must be linked as "KS = K$ + " on additional lines.
F2 allows you to enter the callsign and name of the sta- tion with whom you are en- gaged. These entries may be left blank, or to change the data you may recall the op- tion and enter a single quote {") when the information is requested. Once a name or callsign has been entered, entering a null will preserve whatever data resides in the memory for those catego- ries.
F3 will send "(his callsign) DE (your callsign)"' if a call- sign for the station being worked has been entered. Your call must also appear in program line 330.
F4 sends the QTH or other message contained in pro- gram line 340-
F5 will transmit "SO HW CPY (name)? (his callsign) DE (your callsignr followed by the invitation to transmit "(K)''. This function demon- strates how two for more) Function Keys can be linked (concatenated). In this ex- ample, F3 is called by F5.
F6 sends the station brag tape (rig message) or the contents of program lines 360 and 361. These linked lines are explained in F1 above, When linking pro-
gram lines to allow more than the standard line lengths, caution should be exercised on the unex- panded VIC-20, as memory limits can be approached quickly and result in erratic code spacing. Should this happen, abbreviate your messages or add memory expansion.
F7 toggles between Com- pose and Send modes. When Compose is chosen by a single depression of the F7 key, 73 Morse R/T will allow building your transmission in advance of being sent It
will not function during Re- ceive. Function keys may be embedded during Compose, but remember that the lengths of messages linked in this manner will affect the maximum count of 255 characters. It is easy to ex- ceed maximum buffer lengths unexpectedly in this way. Should an error devel- op due to this, type GOTO 50 and your transmission will continue with the of- fending characters re- moved. Depressing F7 a sec- ond time will send your Composed text.
10 50TQ200
iS FORL-ITOLENCMf (ft) ) jSf=KIDt (M*(A) ^L, H iM-Ti IFSf-"-"THeNM»DL
20 POKEy,PtP0KEW,KsFORD«ITOintKE)(TiP0KEVp2*PQ*CEW,U(FQRD»ITOEaiNE)CTiNEXr
30 FORDi»ITOBFiG£TKtiFRlNTK$s
3^ jFKS-CHRi(ayAKDBtC>""TH£NBt«L£FTi<B»pLEN(B»»-I>i&QT030
34 I FK*-CHR* ( QQ ) THENB*-" " i PRINT " CSC) '* i GQT030 36 B«-Bi*K«iNEXT
35 IFBt<>"'^THEN50
40 6EH<*iJFKi*""THEN40
45 Bt^KiLPRlNTB«|
50 A-ASC(B«) iBt-RlGHTC{BtpLEN{Bf )-n i IFA>LLTHEN250
60 IFA>SPTHENFQRD«IT0MSiNE)(TiS0T03B
70 A-A-FFiIFA<ITW£NA-I
80 &0T015
100 IFPEEK(C^-ITHENL»L+Ii IFLXHTHENiOO
no L-Zs IFPEEK(C)«2THENPRIWT" '*!
112 lFPEE*<(G>-¥THENP0K£19BpZie0T024S
US JFP££K(C)«ZTHEN1L2
120 L-L+IiIFPEeK(C)riCNl20
130 IFL>HTHENX»K+XjH*(EtH+L+L+W)/FiGDTQl50
140 X-J(+K+IiH-(H+H*H+L+L+JJ/B
150 UZiIF)(>RTHENX = riGOTQlO0
160 IFPEEK (C) «ZTHENL-L+I i IFL+L<HTHEN160
170 IFNOTL+LiHTHENlfO
180 IFPEEK {O THENL-Z J 80TQ 100
1:90 PRlNTf1tD«(Rt,X, Hi iX«IiL«ZsGaTOlO0
200 DIrtM*<51)iFE}RL*lT051iREADH*a)iNEXTjS-2O
2i0 PRINT" CSC) {Cft> 73 MORSE SEND/REC" J PRINT" {CD>CCD} £CD> SPEED «5 TO a0KCR>CCR>"9"(CL){CtJCCL} £C
L>CCL}"|
2i5 INPtfr3ilFg<:5QRS>eOTHeN210
220 PRINT" CSC} " i P0KE3687e, 15* V-36876i P*230i I-Oi W-3714ai K-222t U-254i T-2300/9^1 , 23
225 SF-T/l2tES«7SO0/S''2iFF*39iLL»90i9P«S2iWSii3«TiDLit3«TiIFa>3OTHENDL-4tT
230 Ri-" TEHNAI0GKDWRUS??aZVCXBJP7L?FWH09?e??77?+4f?7/-Al???7)?l277?3t45"
23S Ri*Rf +"7?7???7i 7???, 7????(??|7?7?7???-7?' 7????777. 7?'??77??7??777t"
240 B-4tE-9iF-l2rH-16tC-37136iG-l?7iI-lrJ-2iN-6iQ-20iaQ-l9tR-i22iX-irV-atPQKE37i3B,2S4
245 PRINTiPRINTfiPC<9>"<Ry>XMT{CD>"iQOT040
250 IFA>l32ANDA<14lTH£Nft-A-l32i0NAeDTa310, 330, 350^370, 320, 340,360,380
255 rrA«95THENPRlNTiPRlWTSPC(7)'^CRV>ReCElVE{CD>"(S0TD190
260 &QT0210
310 K4«" CO CQ CQ DE kfflVKC/i WSVKC/l K "tS0TQ45
320 PR I NT I PR INT I INPUT "STATION CALL"|Cf
323 PR I NT 1 INPUT** NAME ''(N*
32B PRINT"CSC>"ieOT040
330 K*"" "+Ci+'" DE W5VKC/1 "+B*ie0TQ43
340 Ktit" QTH PETEReOROUeHi NH7 PETERBOROUGH, NH, ■ "+Bf(GflT04S
350 K»-"SO HW CPY *+N*+"? > C7?>K"r S0T045
360 Kt-" RIG HR TEN TEC CENTURV/21 INTO A DIPGLE - KEVIN6 MID A VIC 20 COMPUTER"
361 K«-Kf+* - FRIEND WB5AyD WROTE SOFTWARE - ''+BtiGaT04S
370 Bi«"*'iPRINr^*^SC>"SPC(6)"{CDKRV}C0HPDSING{CD)"
371 G£TK*iIFKi*CHR*(l36)THeNPRINTiPRlNTSPCC6)"{RV> SENDING fROKCD>"iei5T03a
372 IFKt-""THEN37l
373 PRINTKti i IFASC(Kf ) >132THENPRINT"CRV>"MIDfr 13372468% ASCCKi) -132, 1) "CRO>"|
374 IFK«-CHRI (20) THEN8«-LEFT« (BipLEN^BD-l) iGDTg37l
375 IFLEN (Bf > •255THtNPRlNT" {RV> " I i G0T0371
376 Bt-Bfi'KtiGDTaS?!
3B0 K«-" DE W5VKC/1 •'+MiG0TD49
3y O (/n xwKm « • * >«• « | i~ii~f |*t • •*■*!*• ~^ * , ~~ * w '"' p ■ ■ •"■"! ■"■ " • ~ | " ■ ■ ~ •
3*" OM I H"'™'™ I I « p™'»^i™'b px.p™ji«B^p ^p ii t —■— «vp«— •>■
33Q Dm TAt"|"mi ■ p^i" ii" • i p • \ * •" t p —"— i|««tipiBpii ~™" |""«™| ■— ■ » p "~ p ™ ■
fei^v un in pa 'I ■ p" 'f"""! I'' !■■> fi J ■« % • I ••
READY «
Program listing.
73 Magazine * June, 1984 39
I
20 POKEVO, Ft PCKEW; ICtFOftD^ITOfl! NEKTi PCKEVO, Ii PDKEWtUi FORD-ITOESi ^€)(Ti NEXT
205 P0^^E532Bl,0tPOKE5328Op0i PRINT" <WH>(SC>^'iFDRI=54272T054296tPOKEI.OJ NEXT
210 PRlNTSPCU0)-J/64 flORSf SDUJ/REC'iPftlNTS^CC?* "tCDXC&XCDl^BED tS TO 80KCEJ CCR) "S" CCLJ (a>
216 P0KE54272,65iPCKE54373,5ls»tf*54276sAD*M277sSR=M27B>MV«i5(HI=HV+t
217 P0KE«r,kiliPWEAD,ZtP0KES«,24OiPOKEWF,ttViPtKE54275,fifPaiE54274,0 220 PRTMT" CSC) *t V0=54296t 2=0t bi«56576i K«t47i U=1S1 i T-2300/S'^l . 25
2*0 B*^;E*9iF«l2i*+«l6iC«5fc577!6«197il»liJi-2;N*^6;Q=20i00«i9tR»i22;X*ls¥»57
241 P0K£54379^ 254
245 PftlKTtPRINTSPCtiei "CRV>XMTCC0>*^iG0Ta40
255 IFA=95THENPRmTi PRINTSPC C 16 J « CRVJRECEI VE{RO> " : GQT0190
StO Kf«" ftlfi HR TEN TEC TRITON 4 INTO A DIPOLE = KEYING WlD A CBM 64 COMPyTER"
370 B*=""sPRINT"(aC)"SPC(l5r'<CDMRV>COllPOSlNG<CD3 '
371 GETK»ilF*<t«CHRf U36JTHeNPRlNTsPRrNTSPCCl5)"CRV3 SENDING CRQ}CCD}"!GQTQ38
READY.
C-64 modifications to 73 Morse R/T listing.
F8 sends 'DE (your call)". Useful for IDs and QSK.
Note in line 340 [and oth- ers) the buffer (BJ) is added to the message, preventing the contents of the buffer from being lost This enables the messages to be used within text in either the Direct or Compose modes. In the Compose mode only, a reversed number represen- tative of the inserted Func- tion Key will appear within text Although not repre- sented in Send, the Function Key will be transmitted.
Receive
With a suitable interface connected, Receive may be entered by depressing the back-arrow (escape) key. A second push of the same key returns to the Transmit mode, and in this way the key toggles between modes. The back-arrow key may al- so be implanted in text When encountered, the modes will change.
The simplicity of the re- ceive circuitry on the ac- companying schematic is roughly representative of the function refinements. Although accurate and flexi- ble, these restrictions sug- gest several actions to en- sure optimum results,
The variable resistor is used to adjust the loop fre- quency. Loop adjustment should coincide with the center frequency of the CW filtering engaged For exam- ple, a 75O-H2 (typical) filter would require your inter- face loop be adjusted to 750 Hz— the idea being to ad- just the LED to brilliance
40 73 Magazine • June, 1994
with futi filtering engaged.
As a digital device, the VIC requires spaces of si- lence between Morse char- acters for recognition. Therefore, rf gain should be adjusted to permit the LED to extinguish between key- ing. In other words, tune in the desired signal and re- duce rf gain to a point where QRM does not keep the LED from blinking A threshold adjustment (squelch] would be helpful here, but is not within the scope of this arti- cle.
Any suitable interface can be driven with 73 Morse Receive/Transmit The pre- requisite is that the interface in use is TTL-compatible and goes low on keying applied to the externa] DEMOD in- put on the interface in- cluded here.
Although there is an up- per limit to receive copy speed, we have successfully decoded 30-word-per-m in- ute CW generated by HAMTEXT and MBATEXT with this program — admir- able for Basic. We feet VlC-20 and C-64 Basic has been optimized at this point Morse transmission at speeds in excess of 65 wpm is possible and has been de- coded by the previously mentioned commercial pro- grams. At speeds approach- ing SO wpm. 73 Morse R/T is detected with excess spaces but remains readable.
It is important to mention that no CW decoder will copy poorly sent CW. If, for instance, the transmitting station sends a question mark as "IZ", then "IZ" will
be displayed.
In view of this restriction to accuracy inherent in all time-based microprocessois,
we recommend you remain faithful to your own receiv- ing speeds and not dive into a speedy QSO you can't keep up with should your VIC crash, If you parallel a key alongside the computer, you can always request QRS if your program or VIC crashes in mid-QSO and you find yourself adrift without oars.
Circuit Notes
The transmit section of 73 Morse Receive/Transmit uti- lizes the CB2 [RS-232 Sout) signal at the User I/O port on the VIC-20 and ^. CB2 will go low when the transmitter is to be keyed. This further enables the Run/Stop/Re- store sequence to interrupt keying at any time and pre- vents the computer from keying the transmitter on power-yp initialization or Reset
For Receive, this program
makes use of the PBO signal at pin C and the CB1 signal (RS-232 Sin) at pin B PBO must go high when a re- ceived signal is detected, Although CBl is not used, it is connected in anticipation of the later addition of RTTY and ASCII upgrades.
The 567 tonecJecoder IC is available at most parts stores and is common.
A 12/24 .156 spacing con- nector is required for this in- terface. Lacking one, a 22/44 pin connector (common) can be cut to fit The inter-
face may be constructed on a piece of perforated board and the underside of the connector attached to the board with strong (twchpart) epoxy. Refer to the manual furnished with your comput- er for pinouts.
Do not attempt to key a rig which presents more than + 30 V or any negative voltage at the key terminals with the direct keying por- tion of this circuit for dam- age to your computer will likely result Provision for total isolation of the type necessary to permit safely keying such transmitters can be made through a common reed relay using the alter- nate keying section of the schematic.
A ckno wiedge ments
The authors of this pro- gram would like to acknowl- edge conceptual assistance from Jim Thomas W90AG, whose application of the 567 tone-decoder circuit ap- peared on an interface card for CW split*screen on the ZX-81 and was used by per- mission. Additional thanks to Cliff Nunnery^ NU4V from whom the ZX-61 program and interface are available. Automatic receive-timing ad- justments used in this pro- gram were based on the equations of J. C Sprott W9AV, who created them for the TRS-80 computer.
Notes
If in testing this program you notice scrambled CW, look for an added or missing comma in the Data state- ments of lines 500 through 540.
Users of the Commodore- 64 should replace any ex- isting program lines in the VIC version with those ap- pearing in the 64 modifica- tion listing, adding those not shown in the VtC listing.
This program previously appeared as J/20 Morse R/T in the bi-weekly fournal/20 and has been in use for over a year. It is in the public do- main.!
F
The Evolution of a Superior Terminal for RTTY and CW
'^"'
C64
Am-1 Past
As an B & D project, the AIK-l went smooth as silk. By using our proven TU designs and software that s been refined on units such as the ultimate ATR-68OO5 we obtained a level of performance only found in much more expensive dedicated sj^stems. Compare it for yourself or ask an AIR-1 owner. They work greati
AIR-1 Present
Along with great performance, the AIR-1 boasts an impr^sive list of features, some of which are exclusive to Micro log,
• Computer enhanced detection means extensive use of software digital filtering techniques for noise and bandwidth that track the operating speed and code.
• Full speed RTTY 60 to 132 WPM, CW to 150 WPM, & 110/300 Baud ASCII-
• Choice of full or split-screen display with large I type ahead text buffer and programmable
memories.
• On screen tuning indicators mean you never have to take your eyes off the video for perfect copy tuning. RTTY "scope" cross hatch and **red'dot" signal acquisition monitor right on the screen.
• Ke^'word or manual control of VIC or Parallel printer and receive buffer storage.
• Convenient plug4n jacks for all connections.
• Single board design contains TU & ROM soft- ware that does not require external power.
• FuU one year warranty.
• WHU, UNshift On Space, Word wrap-around, Test "Quick Brown Fox" & "RYRF" in ROM.
: Break buffer. Random Code generator. Hand- key input. Real-time clock, sturdy metal cover and more.
MICROLOG .„
INNOVATORS IN DlGiTAL CO/iAMUNiCATlON
The optional on-board 4 mode AMTOR in- cludes tliese exciting extras:
• AHQ mode A (chirp), Time Diversity mode B (Selective & Collective Broadcast)> and Listen (eavesdrop) for mode A.
• Word processor mode for full editing of transmit and receive text.
• The unprecedented ability to transmit BASIC programs over the air directly from memorylll Just load your program normally by hand, disc or tape, jump to AIR- 1 to establish communica- tions, and t>pe a special control command. The AIR-1 does the rest. All standard Commodore Basic and screen control commands are trans- mitted/received intact, just as you typed them, for immediate RUN/SAVE, Share BASIC pro- grams with your friends around the world without tedious "two-step" re-tjping or mailing fragile discs and tapes.
AIR-1 Future
There*s room for expansion and adaptability with some really "neat stuff planned for the AIR-L But then, why tip off the competition? Now you understand how we live up to the tide "Innovators in Digital Communications/' The complete AIR- 1 for VIC-20 or C-64 is $199 (with AMTOR, $279) . See it at your local dealer or call Microlog Corporation, 18713 Mooney Drive, Gaithersburg, Maryland 20879. TELEPHONE (301) 258-8400, TELEX 908153,
Commodore uix] VIC 30 mrv rEgLstcml tTafSermark^ of Cotnfnodcire Electronics^ Ltd, Cop>Tighl ;:'lt>S3 MICROLOG CORPORATION
n
Peter H. Putman KT2B 54 Burnham Road Morris Phins N/ 07950
Piggy-Bank Repeater Project
Set it and forget it. This inflexible controller doesn't bend the budget
(know what youVe think- ing. The last thing this world needs is another re- peater control, right? (Some would say the last thing we need is another repeater, period, but that's another matter altogether.)
The past few years have seen a prDltferation of mi- croprocessor-based repeater controls offered for sale in 73, HR, QST, and other magazines. While it's cer- tainly tnje that these units do offer an amazing array of functions, bells, whistles, and the like, it can be said that such systems may be
far more than the average repeater operator needs for simplicity and reliability.
The circuit described here won't win any engineering awards but won't break your bank, either. Whafs more, all of the parts can be ob- tained easily. The emphasis is on "set-and-forgef opera- tion, so there are a minimum number of functions to fuss with when performing the fi- nal installation. Best of all, this circuit lends itself well to modular designs, such as plug-in cards. In this particu- lar case, this meant the end of the wonderful January
Photo A. Completed bo^rd minus the LEDs. 42 73 Magazine • June, 19&4
trips to the repeater site to troubleshoot in minus TO"^ weather
The Split Rock ARA re peater in Rock away. New Jersey, had used for many years a circuit based on fiRt- generation TTL devices. When it was first built in 1972, it was a pretty impres- sive piece of equipment! This controller featured a 1.5-second delayed key-up, a diode-matrix ID generator, a "polite" identifier, and used only 22 ICs, 30 diodes, 3 relays, and numerous tran- sistors to do the lob. It was constructed on plug-in wire- wrap boards (presumably to allow for some experimenta- tion) and then the wire^wrap was soldered. With atten- dant power supply, it took up about 12'' by 4" by 6"— not a small package.
Well, time marched on. Pretty soon, chips began to fail about the time that vari- ous pieces of circuit docu- mentation were mysterious- ly vanishing- The identifier began cutting itself off in micUD, giving us one of the world's shortest calls, "DE W— ". Worst of all, the de- layed key-up began reset- ting on every call, resulting in more "doubles" and "tri- ples" than the World Series!
What to do? The repeater
users were ready to march on Washington, Everyone grumbled about the situa- tion. The most popular ques- tion at our monthly meet- ings (after "when do we adjourn?") became^ "Hey, when are you gonna fix the ID box?? Hunnhh?"
With visions of a lynch mob firmly in mind, the de- cision was made to deep-six the old control package in nearby White Meadow Lake and redesign a brand-spank- ing-new controller. Thus would our repeater move in- to the 80s!
I had experimented with many Rube Goldberg de- vices over the years for re- peater control, being first at- tracted to a design using 555 timers. No good! The 555 is surely the most versatile IC ever to grace this earth, but it suffers from a problem common to most one-shots: poor noise immunity, My first attempt at a circuit of this type worked great on the bench, but soon wound up in the garbage, as those poor 555s keyed up on every spike within a mile of our site. Sure looked good on paper, though . . .
A circuit using flip-flops and unijunction transistors soon made an appearance in the March, 1979, QSV
and it looked promising. The user "set" the flip-flop upon key-up, and the UJTs "reset" the flip-flop using the classic RC circuit to detemnine squelch*taif time. Again, not a bad idea on paper. Howev* er, in the repeater, it was soon discovered that the user got erratic squelch tails, if any tail was generated at all!
Using tantalum capaci- tors and precision resistors didn't cure the problem, RFI and timing problems put this model in the circular file. Back to the drawing board! Although the circuit was a clever design, the fact that the capacitor did not al- ways charge completely on each transmission {especial- ly during a series of rapid QSOs) led me away from us- ing any RC-type delay cir- cuits for future designs.
The problem was just too many variables, such as the quality of electrolytics used, type of UJT used, grade of other transistors, and ques- tionable resfxjnse in ex- treme environments. How- ever, the basic concept was halfway there— using flip- flop logic and toggling be- tween set and reset modes. Ah-ha! Now I was getting somewhere, and after study- ing schematics for the 10,000th time, it occurred to me that a better way would be to use clock pulses to do the job. This meant an on- board clock and appropri- ate divide-by-X chips. And so was bom the final circuit (al- though more out of despera- tion than inspiration l).
Refer to Fig. 1 for the schematic. Ql and Q2 serve to isolate any COR lines from the CMOS logic, as welt as provide high enough signal levels for reliable key- ing action. Either positive- or negative-type COR lines can be used, swinging typically from .5 to 8 volts, or vice- versa. U1, a CD4047 free- running multivibrator serves as the on-board clock. It is set to about 120 Hz at pin 10. The output from U1 drives U2, a CD4O40 ripple
counter. These two chips make up the heart of the timing circuit and are never disabled while the circuit has power to it The clock pulses from U2 ane fed to three orvboard divideby-sev- en chips, U3, U4, and U6, which are all CD4024 types and which generate the de- layed key-up, squelch tails, and timeout intervals, re- spectively.
U4 serves an additional function: It resets the delay line after 1 0 to 1 2 seconds of inactivity. Or, if you prefer, it can be disabled. When the user opens the squelch on the repeater receiver, the en- suing COR voltage change (either high-low or fow-high) will cause Ql to go low, which in tum also sets pin 2 of U3 low. This COR signal is also sent to pin 1 2 of USA, a CD4001 quad 2-input NOR gate. U3 is now counting clock pulses, and after 13 seconds, pin 11 of U3 goes high, setting U7A, a CD401 3 dual-D flip^lop. Pin 2 of U7A, the Q output goes low. This signal is sent to the other input of USA, pin 13. Now we're ready for action-
Photo B, Controller built on plug-in card
USA at this point goes high through pioll. This line sets U7B through pin 8, causing pin 12 of U7B to go low. This logic is sent to pin 6 on use Pin 5 is normally set low (we'll get back to it in a moment), with the result that the output of U5C, pin 4, goes high and keys the transmitter through relay driver Q5, When the input signal is released, pin 2 of
4
■^h
I r''
Ri-
ll— ♦
+y,
cc
Ul
to
10
\i2
aXi*
^M
li
:fOK
lOlC
ton
T 47K
rO"
vl
ifl f
U&A
■I
2
'^-*
Ui
*%
CC
Q4
VfM.
L>se
10
K
1^
r
u=^a
to
uf,
11
tz
USA
to
UiO
10K
04
ZK
LED 2
Fig. 1. Schematic.
U4 IS set low via NOR gate USB and after 2.5-3 sec- onds, pin 11 goes high, reset- ting U7B through pin 10. This is the squelch-tail cir- cuit If no further activity is detected after 10-12 sec- onds, pin 5 of U4 goes high and resets U7A through pin 10- The delay line is back on and ready for the next user(s).
This may seem like a fair amount of work just to ker- chunk the old machine, but you'll always get a consis- tent squelch tail, each time and every time. You turn on
*VtC
Luae
«fZvDC
• — • Lite
lOK
;i
* ^EXTflA
OPEN —^ COLLECTOft
[FOR ^nd KEV LINE)
10 K
73 Magazme • June. 1984 43
the various flip-flops and the oivboard clock, and count- ers turn them off, keying the transmitter and dropping it
in the process. No noise spikes to fool one-shots, no variable-length tails, time- outs, or delays. Sound good?
Read on I Now you'll find out why I sent you through all those gates and flip-flops. Refer to pin 5 of U5Q the
Fig. 2. Printed circuit board
LEO 2
P#n
Q|-Q4,Q6 (BOTTOM VIEW)
Q
E B C
Fig. 3. Component layout
kev*line driver. By using a NOR gate here, we've incor- porated timeout control, merely by driving pin 5 high. Stops 'em every time! This is easily done by using two more flip-flops — USA and B.
Let's assume someone has brought up the repeater and is chewing everyone's ear off describing the new Ultra-5000 computerized rig. Remember the COR set con- ditions; U3 is enabled, U4 is disabled, and U7A and B are in the set mode. Refer again to the schematic and you'll spot U6, another divide-by- seven counter. When pin 11 of USA goes high, it sets pin 2 of U6 low, enabling the counter, U6 derives its clock pulses from pin 4 of U2 for detemiining the timeout in- terval. The Split Rock re- peater always had about a 90-second timer, so this pro- gram was retained.
As long as pin 2 of U6 is held low, which it is whenev- er there is activity on the re- ceiver, it will continue to count up to 90 seconds, at which point pin 3 of U6 goes high and sets USB through pin 6. Pin 1 of U8B then goes high and is sent to— you guessed it— pin 5 of U5C. Pin 4 of U5C goes low and the key line is dropped, shut- ting off the repeater-
When our hero runs out of superlatives on his new toy and drops the input car- rier, several things happen. First U3 and U6 are im- mediately reset U4 is now enabled and its pin 11 goes high, resetting USA and set- ting pin 12 high. Like a stack of falling dominoes, this resets U8B, which then resets pin 5 of U5C low, and we're back on the air. You'll get the customary squelch tail, and thaf s it! Everything is ready for another timeout
The timeout timer can be
reset immediately upon the dropping of each input car- rier by using pin 11 of U4, or, if you prefer a short interval for the ''beep/' pin 9. This will give about a 1-1.5-sec* ond interval for reset The
4i 73 Magazine • June, 1984
Ham MasterTopes
THE N2NY HAM RADIO COURSE ON VIDEOTAPE
''^ 1S83 N^NY Proawclions lr«c
TMi
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am MasterTapes brings the best 3ssible personalized Ham Radio :ense preparation right into your own dng room. If you, a friend or family ember wants the best help available to it past the FCC test hurdle, it*s /aibble now in Beta or VHS home dec format.
Larry Home, N2NY brings his 33 jars of Ham Radio teaching experience ght to your home. Each of the 26 video ssons has close-up details of com* Dnents and systems along with superb -aphic drawings. Each lesson has iportant points superimposed over the :tion and reviewed at the end of each action. This makes note-taking a snap! [iss something? Didn't get it the first Tie? Just back up the tape and run it gain or freeze-frame it for detailed ose-up study!
Larry's classroom is a real ham shack, ee» a IS-year-old boy, and Virginia are d through the learning process. The jestions that they ask are the ones arry knows you would ask if you were lere in person. You soon feel like youVe art of an ideal small class. The topics covered will not only get ou through the Novice test— General ass theory is covered also. By the time Du get your Novice license, you will be ble to upgrade to General or echnician!
Larry's technique of involving the ewer with the demonstrations makes
the most difficult topics easy to un^ derstand. Understanding — not mere memorization— is what makes Ham MasterTapes so effective. When you study the 700 possible FCC questions, the answers will be obvious.
Larry doesn*t stop with just test- passing. All the proper techniques of operating practices and courtly are demonstrated. The instruction manual for that new rig won't be a mystery! Larry becomes your own personal instructor to help you on that first setup and contactl
The Ham MasterTapes series is produced in one of New York City's top commercial studios. Not only is the production crew made up of real professionals but many of them are also licensed amateurs. Everybody puts in obvious extra effort to make the production a classic.
The 6-hour course is available on three 2-hour Beta II or VHSSP cartridges for $199,95, for individual ,home or nonprofit Ham Club use, (High schools or colleges must order our Scholastic licensed version, $49955 for Beta or VHS and $750for3/rU-matic.)
To order^ call or write Larry Home, N2NY at Ham MasterTapes, 136 East 31st Street, New York NY 10016. Phone 212-685-7844 or 673-0680, MasterCard and Visa accepted. New York state residents add appropriate sales tax.
,<271
Ham MasterTapes
THE N2NY HAM RADIO COURSE ON VIDEOTAPE
136 East 31st Street
New York, New York 10016 (212) 685-7844 • 673-0680
Ml Nli^**<F'«}uC1*rvt. U^i_
SOME OF THE TOPICS COVERED INCLUDE
AMPLITUDE MOWHATIOW OOCIBLE SIDEBAND SINGLE STDEBA^JD FREQUEWCY MODUIATION PHASE MODUUtTIQ^f SIDEBANDS BAlsrUWIDTM LIMITS ENVElrOPE DEVI AT low CfVEEHODULATI OH
rRE&JE3iCt TStAMSUttlOti
AHTEICKAS AHP FCESiLIIIES
TACl ANTENNAS
QfDAD ANTENNAS
POLARIZATION
FEEDPQIWT IMPEDANCE
KAir-HAVE DIPOLE
QUARTER *W AVE VERTICAL
RADIATION PATTERNS
DIRECTIVITY
JOUIOa LOBES
CHAfiACTEFlSTIC IHTEDANCE
STANDING WAVES
ATTENUATIOft
AliraiiliA-rEEDINC HJSMATCH
STATION ID
CJkLL SIGNS
LOGGtNG REOtflREKENT^
POWER LTMITATIO^f
CONTROL OP FEQUIHEMKNTS
H-S-T REPORTING SYSTEM
TELEGRAPHY SPEED
ZERO^BEATING SIGNAL
TRANSHITTER TTINE-UP
TlLEOaAPHT ABiHEVlATlONS
MADIO HAVE FRCPACATION
SKY KAVH AKD SKIP
GBOUNtt NAVE
HABHDNIC INTEEFIEENCE
SWR READINGS
SIGNALS AND EHISSIOPtS
BACKWAVE
KEY CLICKS -CHIRPS
SUPERIMPOSED HUH
SPUHJOUS EMISSIONS
COMPUTERS
OSCAR
ATV-SSTV
OPERATING COCtrreSY
RULES AND RECttATIONS
OPEKATINC PROCEDURES
RADIO WAVE PROPAGATION
AMATEUR RADIO PRACTICE
ELECTHICAL PRINCIPLES
CIRCUIT COMPONENTS
PRACTICAL CIRCUITS
SIGNALS AND EHISSIDNS
RAOIO WAVE PROPAGATION
EMERGENCY C0MJ1UN I CATIONS
tRAUSMITTIS POWER LUtTTS
STATJOW^ID REOUlHE?CKrrS
IHIHD-PARrr PARTICIPATION
FREQCFENCY BANDS
SELECTION OF FREQUENCIES
a,C. MODELS
PROHIBITED PRACTICES
RAUIOTELEPHONY
RADIO TELEPRINTING
REPEATERS
VOX TRANSMITTER CONTROL
BR£AK-IN TELEGRAPHY AKTEXKA ORIENTATIOM
INTESHATIONAL COMHOMICATlQir
D*EIKSBiCr-PREP DRILLS
IQNOSPHEJIIC LAYERS D-E-F HAXlHUM USEABLE FREOffENCY
tONOSPHEBIC DISTUREANCES SUKSPOTS
3CATTEH* DWCTING LINE~OF-SIGHT TROPOSPHERIC BENDING SAFETY PRKCALITIONS TRANSMITTER PERFORMANCE TWO-TONE TEST MEtlTRALlZING AHFtlFlERS
POiiEii measut^eme:^
TEST EOtJiPMEin"
OSCILLOSCOPES
NULTIHETEItS
SIG^AL GENERATORS
SIGNAL TRACERS
AUDIO RECTIFICATION
REFLECTOMETERS - SWH
SPEECH PROCESSORS
ANTEMNA-TUNINC UNITS
S-METERS
MATTMETERS
IMPEDANCE
RESISTANCE
REACTANCE
INDUCTANCE
CAPACITANCE
IMPEDANCE MATCHlliC
OHM*S LAW
AMPS AND VOLTS DIVIDERS
POWER CALCULATIONS
SERIES AND PARALLEL
FILTERS
I
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high-going pulse from pin 9 can be used to activate a beeper if needed. The time- out progrann can be changed to the legal limit of 1B0 sec- onds by taking clock pulses from pin 1 3 of U2 and send- ing them to pin 1 of U6.
Thats all there is to it! The addition of a couple of
LEDs to indicate DELAY and
COR status puts you in busi- ness. Photo A shows a com- pleted board minus LEDs, while Photo B shows one version built on a WES- COMM 56-pin plug-in card which SARA uses on K2RF/ R. Two built-up boards are now in existence, which
means anytime there's a fail- ure, on-site maintenance consists of pulling the bad board and plugging in a new one. The defective unit can be repaired at your leisure in a nice warm place, not some icebox on a hilltop. Photo C shows the difference in size between the old controller and the new version. Fig. 2 shows the circuit board used, and Fig, 3 shows the component layout. If there is sufficient interest high- quality printed circuit boards will be made avail- able.
One final suggestion: Use good chips. You're trusting the control of your machine to this little bugger, and sec- onds or grab-bag ICs just won't hack it A good source for chips would be Jameco Electronics.^ If you aren't sure if if II wodc under harsh conditions, do what 1 did: Place the board in a plastic bag and toss it in the freezer for about two hours, then pull it out plug it in, and get the good (or bad) news. Prime chips should handle this test with no sweat
There is no place to at-
tach the relay to the circuit board since every relay is different So, do what I've done and glue your relay right to the board on its side— there's plenty of room. Don't forget to bypass the coil with a diode or you may have some problems with spikes.
Its not a whiz-bang mi- cro-based control with 3,000 functions, but on the other hand, you ought to be able to build one of these for under $25.00 with all new parts, and that's a worst- case guess. This unit is ideal for hard-to-get-at locations or for remote links. You can add any type of ID circuit you like; just use the output of pin 1 1 of USA to trigger it through an appropriate trarv sistor.
Have fun! If any ques- tions arise in construction, send along the usual SASE and HI try to help.B
Keferefioos
1."A CMOS Control Circuit for Repeaters." Donald Dofson W1GBO, QST, March, 1979, Z Jameco Electronics, 1355 Shoreway Road, Belmont CA 9400Z
Photo C Size comparison of the old and hba^ controHer versions.
72 Magazme * June, 1984
Parts List |
||
U1 |
GD4047BE mono/as table |
|
multtvlbrator |
$.89 |
|
U2 |
GD4040BE 12-stag6 binary/rip- |
|
ple counter |
.79 |
|
U3, U4, U6 |
CD4024BE 7*stage binary |
|
counter |
2.07 |
|
U5 |
CD4001BE quad 2-input |
|
NOB gate |
2Q |
|
U7,U8 |
CD40t3BEduam flip-flop |
,78 |
Ql, 02, 03, 04 |
2N3904 NPN transistor |
too |
R1 |
500k linear taper control |
|
(63P-500k) |
1.10 |
|
01 |
Mylar™ .022-uF 100-V |
|
capacitor |
.13 |
|
05 |
2N3566/2N2219 NPN transis- |
|
tor |
50 |
|
R2,FG |
47k, y^-Watt cartxjn resistors, |
|
5% |
,12 |
|
R4-R13 |
10k,V4'Wati carbon nesistors, |
|
5% |
.60 |
|
R14, R15 |
l^k, y<-Watt carbon resls- |
|
torSp 5% |
,12 |
|
DtD2 |
FM LED, #XC556R |
J9 |
7 ST |
14-pin solder-tail tC sockets |
2.03 |
1ST |
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ORBIT is the Official Journal for the Radio Amateur satellite Corporation.
For a SAMPLE COPY please
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t^Sfle List of Advert! 90n o ft page T M
73 Magazine • June, 1984 47
I
Fatty Wintei N6BfS PO Box 537
Menh Park CA 94025
Not-So-Famous Garriott Words
in one of his first post-SJS'9 appearances, W5LFL spok Foothill [CA] College. We record his dedication to amateui
eat amateur radio.
Last February, Dr. Owen Carriott W5LFL descfibed bis historic space-shuttle operations in a speech given to over a hundred hams at Foothill College in Los Altos Hills, Calffornia. Ov^en was in the Bay Area to address engineering faculty and students at Stanford Univer- sity, his alma mater. His ap- pearance at Foothill was ar- rant by Ted Harris NBIIU, Disaster Services Director for the Palo Alto (California) Red Cross.
Before Owen spoke, col- lege trustee Robert Smith- wick W6 1 ZU noted how ap- propriate it was that the first ham to operate from space should address a group at Foothill, because the col' lege was the original home base for Project OSCAR. Dr. Smithwick also reminisced ^x}ut the beginning of the space age in October of 1957.
The following is an edited transcript of Dr. Carriott's talk.
Smittv mentioned the events that occurred Oc- tober 4, 1957. I wef[ remem- ber where I was on that eve- ning, I was a graduate student here at Stanford University, just in the process of looking for some interesting disser- tation subject when all of a sudden the Russians were kind enough to provide the ideal opportunity with this beeping satellite putting out its beeps on 20 and 40 MHz. On that Friday evening,
48 73 Magazine * June, 19S4
we went out to the radio- propagation field site (along with a good many other hams) and listened to the sputnik beep its way around the Earth, all of us of course amazed.
The field site was pretty well equipped: We had a number of chart recorders and different kinds of anten- nas there because the field site at that time was being used for studies of propaga- tion effects. Therefore, we could connect up the out- put of the Coy ins receivers to the chart recorders and look at the amplitude and also the very interesting fad- ing pattern, which of course was quite different than any kind of fading that had ever been observed on normal 20-MHz propagation paths.
I can remember the ques- tion being asked, ''Well, that's puzzling: Why is that fading coming along here at something like a one- or half-a-Hertz rate?" The per- son who asked was Profes- sor Ron Bracewell, and I sus- pect he knew the answer to the question at the time he asked. But the question was asked to get us graduate stu- dents thinking about it
Well, that fading, as you all probably already know, turned out to be the Faraday rotation of the satellite sig- nals. As a signal travels down, as it propagates through the ionosphere, its polarization is rotated and that produces the fading pattern which we see on the
ground. It was very fortu- nate for me, as that turned into a dissertation topic in the next year or so.
So I very well remember what happened that Octo- ber, and it certainly was a very exciting time, that eve- ning as well as for the next year or two, as we began to understand something more about how radio signals propagate through the iono- sphere.
Spacelab Constraints
Well, we could go on with some of the historical stuff, I think, for most of the after- noon. There's an awful lot of interest associated with it. But let me talk about events of more recent history, like in the last couple of months. That is, specifically, what we were able to do on Space- lab.
We were on duty for 12 hours a day, and my ham ac- tivities were very carefully constrained to make sure that they did not interfere with any of our basic mis- sion objectives. I had a list of 12 items which could not be violated in terms of the ham operations, including such constraints as no more than an hour a day, never when I was on duty, and all these kinds of things. And as a matter of fact there was no infringement of the main objectives of the flight We did accomplish all of the scientific activities that we were scheduled to do— and more, in many cases --and I
still managed to find a little bit of time for the ham activ- ities in the off-duty periods.
STS-9 Equipment
Now, some of you have perhaps already gotten the February QST, so youVe seen a picture of the little hand-held transceiver that was used for the in-flight communications. HI just mention a little bit about some of its characteristics. It was essentiaHv a Motorola design, but it was built by irh dividual Motorola employ- ees during their offnJuty time. It may have been a lit- tle bit modified from their standard design; t don't real- ly know.
The radiated power was only 4 Watts, but in spite of that, the signal-to-noise cal- culations showed very good margins. I know the people here at San Jose City College had perhaps as good a cali- bration as any, and 1 think your numbers were some- thing like 40 to 43 dB signal- to-noise ratio. And certainly when we were in an attitude in which the antenna was pointed toward the Earth, people could hear from horizon to horizon with an excellent signako-noise ratio.
The antenna that we used was also built by hams, these at the Johnson Space Center Amateur Radio Club, It was their own design. It was essentially a single split ring, and then the feedpoint was adjusted around that
split ring until the imped- ance was matched to the 50-Ohm coax. The measured swr before the flight was 1 .2 or 1.3, something like that — really quite gcxxJ.
The antenna was mount- ed in a little dish about five or six inches deep and put in the overhead window in the aft flight-deck area, right be- hind the cockpit area. It worked extremely well I don't know what the real swr in flight was — I didn't have a meter— but it must have been very close to what we had measured prior to flight on the ground, be- cause the performance as near as we could tell was ab- solutely nominal and gave very good results.
I had to take the antenna down after every operation, because it really filled up one of these overhead win- dews and the other crew members preferred to have the opportunity to look out instead of at the back of this metal dish. And so, after each pass on which I was us- ing it I took it down and sort of tap>ed it over to a side wall where tt was out of the way. And then I just took a few minutes to put it right back up in the overhead window again when the next opportunity came along.
U. & Passes
We had publicized, as t expect most of you know, what the most favorable o|;> portunities would be. We in- dicated that not all of those listed would be possible in flight and that's the way it turned out. But still, most of my operations were among those that were listed in the pre-f light forecasts
We got an extra day ex- tended to the flight and of course we had no predic- tions for those, but a lot of the good hamming opportu- nities came in just the last two or three days of the mis- sion. By that time, I think people pretty well knew how to use the orbital ele- ments that were transmitted
Dr. Owen Carriott WSLFL speaks at Foothil! Co//ege about his STS-9 amateur-radio activities. (Photo by Jim Koski ^76 VV)
by the ARRL, and I suspect most of you knew pretty well when the spacecraft would be coming over. Ise- cause certainly it sounded as though there were plenty of people on the ground who knew when to transmit
One of the most interest- ing passes came right down across the Mississippi Valley on either the last or oext-to- last day in orbit. I've had re- ports from people on both the east and west coasts who were able to hear those transmissions. In this case, the antenna was pointed right down toward the Earth, and signals were received well beyond the actual geo- metric horizon. Probably some refraction in the iono- sphere, a tittle bit of refrac- tion around the limb of the Earthi would account for the fact that the signals were really heard over a substan- tially larger distance than a geometric straight*line path.
It also turned out that even when the antenna was pointed toward the sky, there was enough of a side lobe around the edges of the vehicle that some transmis- sions could be heard on the ground, and vice versa, al- though of course signal lev- els were very much lower than when the antenna was pointed in an optimal direc- tion.
Special QSOs
A number of special con-
tacts were established. For example, i talked with my home ham club in Enid, Ok- lahoma, W5 Hot Tea Kettle, where I started when I was a teenager. My mother was at the shack, so I had a few mo ments to exchange a greet- ing with her And on the same pass, headed toward the southwest we passed over the Johnson Space Cen- ter where my sons were at the local ham club. So it pro- vided an opportunity to ex- change a few words with them,
I think most everyone knows that Senator Barry Coldwater has been very im* portant to our ham activities by supporting ham interests in Congress. I had a special opportunity to talk with him for a few seconds passing down the east coast. And al- so, very fortunately, I talked with W1AW. They were competing right along with everybody else and man- aged to show up on one of the published frequencies.
King Hussein was another interesting brief conversa- tion. Of course, there's not a lot of competing activity fly- ing over the Near East so I didn't have too much trou- ble having a very nice brief conversation with him.
Shuffle Communicattofis
One final contact ! want to mention came when we were flying over Australia. One of our astronaut per-
sonnel, Dr. Joe Kerwin, is on
assignment in Australia near the NASA tracking station at Canberra. We talked with the hams there, and they went out and set up a fairly high-gain antenna at one of their tracking locations — it's still ham gear, howev- er-and I prearranged a time and frequency to meet with them.
We had it arranged that rd set up the communica- tion via the ham link, but then they would patch me in via their federafiy-leased telephone lines back to the capcom [capsule communi- cator] in Houston. So I talked to Joe briefly and to all the hams at that station, and then they patched me in to the federal line and I talked to the capcom, who was communicating with the spacecraft via the nor- mal channels from the con- trol center in Houston. And the quality of that transmis- sion was better than the nor- mal Ku-band transmissions- It very much impressed the other members of the flight crew and the flight com- mander, John Young.
John is also the head of the Astronaut Office, and I think there really is a gerb uine interest in the possibili- ty of having something like this available for a backup communications mode in the future. Whether or not anything develops from that I don't know. But I think his interest is signifi- cant and others in the NASA administration have also mentioned that to me.
Advantages of 2 Meters
I think 2 meters was a good choice for the opera- tion. Some people have asked me since, "Well, shouldn't we go to higher frequencies?" or "Shouldn't we go down to HF and look for more interesting propa- gation effects?" All those things are interesting to think about and we might want to consider something different on another occa-
73 Magazine * June, 1964 43
sion. But for this first oppor- tunity, 1 think 2 meters was exactly the right choice.
First of all, the Doppler shifts are about plus-or- mtnus 3.5 kHz. and if you can imagine using anything other than an FM receiver —say, single sideband — you'd be continually trying to track and take out that Doppler shift both on board and on the ground. It would be a terrible job. With all the hundreds of signals being re- ceived and everybody hav- ing different Doppler shifts, it would be a hopeless task. Working with an FM dis- criminator, of course, any place you operate along the passband of the center part of that discriminator circuit, if 1 1 take out the Doppler shift for you. So that was an enormous advantage imme- diately.
And the second thing about an FM circuit is that it also tends to select the strongest signal and sup- press the others. That was al-
so extremely important from the practical stand- point of trying to pick out one or two stations from maybe a hundred that were calling on each of the uplink frequencies. So the FM transceiver at 2 meters was realty an ideal choice for this first effort
Future Changes
All in all, ifs just hard to imagine how we might have done things much different- iy, although I do want to make a couple of points about that.
First, you1l see in that pic- ture on QS I that I was oper- ating with a very lightweight headset fust a Irttle single bar over my head with one earpiece and a little sponge underneath that. This was designed for working in the spacecraft ^o that I could hear all the other things go ing on around me. That was important for using it in a spacecraft environment for other purposes, but it was a
difficulty in working with ham equipment There was too much outside noise. What I really needed was a pair of good headphones that would really isolate me from the outside world.
And then, the only really serious thing, there was no variable adjustment on the squelch circuit in the trans- ceiver. And the squelch cir- cuit operated such that it compared the signal at the center of the band with what it interpreted to be noise coming in from the outer edges of the passband. Well, with plus-or*minus 3.5 kHz, all these other signals coming in provided what the receiver thought was a lot of extra noise in the fringes of the passband. Therefore, it would often decide, "Well, the signal isn't stronger than the sideband noise, there- fore I'll tum on the squelch, because if s not a strong sig- nal/' And that way, the whole receiver would be deadened, whereas really t
had plenty of good signals
there, but no opportunity to inhibit the squelch. So that is the one design feature that I'm sure we would change the next time around.
Missiori Successful
Outside of that things went really beyond our ex- pectations. Every objective we set before the flight was achieved during the time I was able to operat3e. 1 was on the air for something like four or five hours total, and during that interval, some- thing like 350 two-way con- tacts were established. And the ARRL has about ten thousand requesb for 5WL reports. So it was really very widely participated in by both hams and SWLs. It was a marvelous opportunity and a great pleasure for me to have had this chance to operate from space. And I'm just sorry I'm couldn't have had a two-way with every one of you who tried to con- tact me. ■
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73 Magazine ■ June, 1984 51
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2 @ 18-Gauge
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73 Magazine • June* \98A S3
Better the R-70
At your own risk, you can soup up one of Icom's super receivers. How to do it was not read here.
Tom Carlson KE4AQ Sox 4776 ARO NY 09109
Being an avid SWBC DXer, I have read with interest in many publica- tions the consistently favor-
NiRflOW
able reviews given to the new I com R-70 HF receiver I have been SWBC DXing for a period of time using a highnituaiity portable receiv- er, but I finally reached the
point where I needed to up- grade to another level to snatch some of the weaker stations I sought With this idea in mind, I recently pur- chased an IC R-70 and have been having a ball ever since.
In the AM mode of opera- tion, the passband tuning allows the passband to be varied from 6 kHz to 2.7
kHz. In the SSB mode, the
passband can be varied from 23 kHz to 500 Hz. This is indeed sufficient for many applications, yet it seems that many of the rarer DX stations that I sought were sandwiched between two or more powerhouse SWBC stations at ± 5 kHz. Need-
fi& 7.
Photos by 0* A, Carlson
fess to say, the resultant co- channel interference would many times render my de- sired station unintelligible, in spite of the passband tuning.
It was at this point that 1 pulled out the schematic diagram and began investi- gating the possibility of
switching in the narrower- bandwidth ceramic SSB fil- ter instead of the standard ceramic AM filter.
The steps that follow will
L^ |
^- |
|
^^^B ^^^^^ _ft- jK |
k?^^' '^ ^m |
|
^ ^ ^B ' |
||
^^^ |
Completed conversion. The switch may be accessed whh Routing of wires from the switch to their respective connec- ease through the top trapdoor. tion points.
54 73 Magazine • June, 1984
Wke5 connected as per schematic dia^am.
Mounting bracket formed from a bent spring clip.
describe the modification of the fcom R-70. At the 3rd hf of 455 kHz, the SSB filter of
23 kHz will be switch-se- lectable to replace the stan- dard AM e^kHz filter. While this cut down on the fidelity of music and some voice transmissions, in many cases it dramatically reduced the ccKhannet interference prob- lem. It allowed me to pull more than a few signals out of the mud. Physically, no components are removed and nothing is done to the receiver that cannot be reversed.
The parts and toots re- quired are:
• 1 DPDT toggle switch (small)-ALCO MTB206N or equivalent
• 2 feet of hook-up wire [20-24 gauge)
• Solder sucker or solder wick
• Needle-nose pliers
• Side cutters and wire strippers
• Phillips screwdriver
• Soldering iron and solder
• Schematic diagram
• Parts layout diagram
1. Remove the 12 screws that attach the top cover to
the chassis of the receiver and lift the cover off,
2. Remove the 7 screws that hold the main circuit board in place and lift up the main circuit board. The wiring harnesses connected to the circuit board do not have to be removed.
^Sf ff List of Aavsrtfsers on paga f Id
3. With the parts layout diagram and schematic dia- gram, locate R81, R75, D46, and Q12 on the main circuit
board.
4. Using the solder sucker or solder wick and needle- nose pliers, lift the end of R81 that is soldered into the same foil track that holds
the anode of D46.
5. As in step 4, lift the end of R75 that is soldered into the same foil track that
holds the collector of Q12,
6. Cut 4 6-inch pieces of hook-up wire. Solder wires to the following points:
(a) the free end of R81
(b) the free end of R75
(c) the hole that formerly held the end of R75
(d) the anode of D46
7. These 4 wires will be soldered to the DPDT switch as shown in Fig. 1, The wires should be routed and dressed neatly to where you elect to mount the switch. The photos will demonstrate one possibility.
I mounted my switch to one of the screws that hold the main circuit board into
place. A bracket was formed from a spring clip bent to 90 degrees, a 1/4-inch stand-off spacer, and a long bolt with lock washers. This held ev- erything to the main circuit board and chassis (see photos). Use your imagina- tion on this one and see what you can come up with
from your junk box. I am able to access the switch with ease through the trap- door in the top cover.
In one position, the cir- cuit is in its normal config- uration. In the other posh tion, the SSB filter is substi- tuted for the AM filter to greatly improve selectivity. It must be kept in mind that this conversion affects the
AM mode only. The switch must be returned to the nor- mal position when other modes are used although no harm will occur if the switch is mistakenly left in the "narrow" position.
This option has proven in- valuable on a number of oc- casions and improves on
what is already an excep- tional receiver. ■
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I
73 Magazine • June, 1984 55
^
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<54
m
55 73 Magazine * June, 1964
I
NO RADIAL
The f^ 3 half wavelength design alimlnates the
round radial systenrt r«qulna<l by other ver<
Is. Optimum current distribution gives
efficiency and low angre radiation for DX
munlcatiorts.
fl3 brings high perfonnancd antenna features to those living in epartmenis, condominiums or on smaii city fols. Even if you have plenty of space, R3*$ combination of neat appearance end OX capability make it ideel lor your sta* tion. The R3 includes an integral turner to give a perfect match across 10, 15, and 20 meters. The remote tuning feature allows easy finger- tip control as you operate your station.
R3 Is a complete antenna system ready to in- stall in virtually any iocation from ground level to root top.
FEATURES 3 dB Gain, ref V^Awhlp
No Radials
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Integral Tuner with
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24 Volts To Tuner
110 or 220 Volt Operation
75 ft (22.9m) Control Cabte Included
Only 22ft (6Jm) High
1 sq ft (.09 sq m) Space
Self Supporting
Stainless Steei Hardware
Mount: Sleeve Type Fits Pipe Up To
IV4 ln(4.Scm) die
Can Be Easily Stared and Set Up For
Portable or Temporary Operation
Add up the features— you'll find that you can have ALL OF THIS PERFORMANCE without the need to buy tower, rotator and associated hardware, M !S AMOTMSn PRODUCT CMATCO FOR THE EMMYMEHT OF VOt/fl HOBBY BY THE WOULD BEftOWMED CUSMCBMFT EHOmEEBINa UEStOH TEAM
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I
w^See Ust ot AdwmrUser^ 0/1 |J*ge t14
7$ Magszme • June, 1364 57
300 WATT ANTENNA TUNER HAS SWR/WATTMETER, ANTENNA SWITCH, BALUN. MATCHES VIRTUALLY EVERYTHING FROM 1.8 TO 30 MHz.
MFJ's fastott uriing lunar packs In pfifity of new ftatym!
• New Styling! Brushed aluminum fnwtt- All metal cabinet.
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• New Antenna Switch! From panel mounied Select 2 coax lines, direct or througt^ tuner . random wire/balanced line or tuner bypass for dummy load.
• Newairwound Inductarl Larger more efliclent 12 position air- wound inductor gives Jower losses and more watts out. Run up to 300 watts RF power output Matcties everything from 1 8 to 30 Mi-iz dipoles, inverted vee random wires, verticals, mobiie wtiips. l>eams. tjalancecJ and coa)( lines Built-in 4:1 balun for tjalancedlines 1000V capacitor spacing Black. Ilj(3x7 inches Works with all solid state or tube rigs. Easy to use, anywhere
$99.95
MFJ-9410
NEW FEA TURES
RTTY/ASCII/CW COMPUTER INTERFACE mfj.is24 $99.95
Minni^HMiHaMi
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Send and rvceiva computediifl RTTY/ASCII/ CW with nearly any ptrsanal computer (VfC-20. Apple, TRS-60C. Atari, Ti-99, Commodofe W. etc.). Use Kantroni^^ m most other RTTY/CW software. Copies both mark and space, any shift (including 170, 425. 8&0 Hz) and any speed (5-100 WPM RTTY/CW, 300 baud ASCII). Sharp 8 pole active filter for CW and 170 Hz shift Sends 170, 850 Hi shift. Normal/Reverse switch eliminates retunlng. Automatic noise timiter Kanironlcs compatible socket plus exclusive general purpose socket 8)^1 %x6 In, 12-15 VOC or 110 VAC wiU) adapter, MFJ-1312. $9.95.
RX NOISE BRIDGE
Ma]clmlza
your antenna
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Talis whettier to shorten or lengtlten afiteniia for minimum SWR. Measure r^onaitl frequency, radiation resistance and reactar^e. New Fiiturti: Individually calibrated resistance scate, expanded capacitance range (t150 pf). Built-in range extender for measurements be- yond scale readings. 1-100 MHz. Comprehensive manual. Use 9 V battery. 2x4x4 In, t
INDOOR TUNED ACTIVE ANTENNA
"World Qnbber'* ftalt or ixetttfs fKiptliMi
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Antenna minimizes mtermod. i" : :ves select
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functions as preselector with external antennas.
Covers 0,3*30 MHz, Telescoping antenna
Tune, Band. Gain.
On-off bypass controls.
6x2x6 In. Uses 9V
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no VAC with adapter.
yFJ-13l2.».95,
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Turn your tyfltheiiztd icannlng $39.95 2 meter handheld Into a hot Police/ ^ * mFJ Fire/Weather band si^innfirl i |.-»ai3
144-148 MHz handhefds receive Poiice/Fire on 154- 156 MHz with direct fre- quency readout Hear f40AA mar iiime coastal pi us more on 160-164 MHz, Converter mounts between handheld and rubber ducky, Feedthru allows simuitaneaus scanning of both 2 meters and Potice/Fire hands, ^o missed calls. Crystal controlled. Bypass/Off switch allows transmitting (up to 5 watts). Use AAA battery. 2^4x1 yzxlV* in. 8NC connectors.
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The tiett of ili CW woftd}'
a deluxe MFJ Keyer in a compacTOntfguratlon that fits right on the Bencher iambic paddle! MFJ Keyer - small in size, big in features Curtis 8044-B IC. adjustable weight and tone, front panel volume and speed controls (8-50 WPM). Buill- in dot -dash memories. Speaker, sidetcne, and push button selection of semi-automatin/tune or automatic modes. Solid state keying. Bencher paddle is fully adjustable; heavy steel base with non-skid teei Uses 9 V battery or HO VAC with optiimar adapter. MFj-1305, S9,95.
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5S 73 Magazine • June, 1984
Free MFJ RTTY/ ASCII/CW software for VIC-20 or C*64 with purchase of MFJ-1224, IVIFJ-1225 or MFJ-1228 from MFJ. Send / receive Baudot, ASCII, CW. Type ahead buffer. 24 hour clock. Supports VIC printer. IVIenu Driven. MFJ-1224/1225 cable. On tape. Available separately for $29.95.
RTTY/ASCII/ AMTOR/CW INTERFACE CARTRIDGE FOR
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I
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Mm vtnttila WHY/ ASCrt/AMTOA/CW intir lici cirtrldgii Av3l!ab!e for VIC-20 and Commodore $^. Gives ym more featurta, more performance, more value tar your money than any othftr Interface cartridge aval ladle.
Sima Inttrfica ceffrfcf£|« works for both VIC-20 and Commodore 64. Plugs into user's port.
Cliooti from wide wiriity of RTTY/ASCH/CW, even AMTOfl software. Not mafried to one on-board software padiaoe- Use MFJ. Kafiironlcs, AEA plus other software cartrit^. tape or &l$k.
Kfi H£ ind 170 Hz shifts on ftceivt wd transmit.
Hit mart ind i|fta«« mitpvti for scope tunfng.
HonMiyRevertt tikttch eNmlnates retuning.
Tnieilttll chirtnil mart and tpaci actfva fin»n amt automatic thresiiokl correction gives good copy when one tone Is ot>{ltarated by QRM or stIectJve f^ng.
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H«mw aOO Kz acttve CW fitter Automatic PIT.
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Copiu ill iblfti and all ipeeda.TwIn LED indicatofs nnakes tuning easy, positive Normal/Reverse switch elfminales tunirjg ^ fnverled RTTY, Speaker out jeek. \nc\ii6Bs cable m Iniertaoe MFJ't224 to VlC-20
■ UNIVERSAL RTTY/ASCII/AMTOR/ CW COMPUTER INTERFACE
Lets you send and receive compiitefized RTTY/ASCII/AMTOR/CW. Copies all shifts and all speeds. Copies on bath mark and space. Sharp 8 pole active filter for 170 Hz shift and CW« Plugs between your rig and VIC-20, Apple, TRS-80C, Atari, TI-99, Comnnoflore 64 or other personal computers. Uses MFJ, Kantronics, AEA software and other RTTV/CW software.
0^
V ^R **« 4««K ^Tm XHT^ ^^ ^K ^^ ^^
^^ COMPUTER l^lTEflFI^CE
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New MFJ-1224 RTTY/ASCII/AMTOfl/CW Cwtk puter fnterfict lets you use your personal compifter as a computerized full featured RTTY/ASCJJ/ AMTOR/CWstation for sendfrg and receMng, Plugs between rig and VIC-20. Apple, TRS-BOC. Atari. TI-99, Commodore 54 and most others.
Use MFJ software tor ViC-20. Commodore 64 and Kantronics for Apple. TRS-flOC, Atari, TI-99 and most other software for RTTY/ASCII/AMTOR/CW.
Eity^ potntve luntng wiTh twin LEO Indicators.
Copy any thifl (170.425.&50 Hz and all otner shirts) and any speed (5-100 WPM RTTY/CW and up to 300 bayd ASCII).
Co pin on both mari( and iptce, not mark only or space only, to Improve copy under adverse conditions.
Shiq} 8 pola 170 Hz ihlft/CW actl¥i fliter givas good copy under crowded, fading ana weak signal conditions. Automatic noise llmlter suppress static crashes for better copy.
Normii/Revini twttcli etimlnates retunlng. +250 VOC loop output drives RTTY machine. Speaker |ack.
AittomitJe tracking copies drifting signal.
Eiar 2206 tinfl oenftntor gives phase (^ntinyous AFSK tones. Standard 2125 Hz mark and 2295/297& Hz space. Microphone llnfl: AFSK out, AFSK ground. PTT out and PTT ground.
FSK levying output. Plus afKl minus CW keying. CW transmit LEO. Extrnal CW key jacit.
Kintronles eompitlbli vkM,
Eidushrt gtmnl purpose lodnt altows Interfac- In9 to near fy any personal computer with most appro- priate software. Available TTL lines: RTTY demod out, CW demod out CW-ID Input, +5 VDC. ground. All signal lines are buffered and can be inverted using an internal DIP switch.
Use GaKo sQflwafB with Apple, RAK with VlC-20, Kantronics with TRS-80C. TI-99. N4EU wfth TRS-80 III, IV. Some computers with some software may re- quire some external components.
Met^i cabinet. Brushed alum, trpnt 8x1!^x5 in. 12-15 VDC or 110 VAC w(th adapter, MFJ-1312.S9 95
MFj"im, a.K, m^m wmmit fv mpj^thi
SUPER RTTY FILTER
CW INTERFACE CARTRIDGE
FOR VIC 20 y C-64
HF\ €Qi0QTli hrttlllf 44^ f&JXR
L«l4i
MfJ^TS
»399B
SuptrRTTY filter greatly improves copy under
crowded, fading and weak signal conditions. Improves iny RTTY receiving system. S pole bandpass active filter for 170 Hz shift (21Z5/e295 Hz mark/space), 200 or 400 Hi bandwidths. Automatic noise limlter. Audio In. speaker out jacks. On/oflVbypass switch. "ON" lEO. 12 VDC Of 110 VAC with optional AC adaptor, MFJ-1312, $8.95. 3x4x1 inch aluminum cabinet.
39
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or Commodore 64. 4'/^iVSK4Vi inches, 12-15 VOC or 110 VAC with optional adapter, MfJ-1312, 13-95.
High ptftormanci CW Inttfliea cartridge Gives "j!! iNCftllent perfof Fnanc«
MFj*1229 ^^^^^ ^*^^ > crowded, noisy conditions. Works for both VIC-20 and Commodore 64. Plugs into user's port.
4 pole 100 Hz tundwimh active llitar. 800 Hz center frequency. 3 pole active iowpass post detection filter. Exclusive automatic tracking comparator.
Plua and mlnui CW kiylng. Audio In, speaker out lacks. Powered by computer.
includes Basic lltUng of CW transmit/receive pro-
gram.AvaJlabieon cassette tape, MFJ-1 252 (VIC-20)
or MFJ-1 2&3 (0-64), K9S and on software cartridge,
MFJ-1254(VIC'20) or MFJ-I^(C^). $19.95.
You c^n atso use Kantronics. AEA ^ther softwart.
Also copy RTTY with single tone detediofi.
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MFJENTERPRISESJNC. -9 Box 494, Miisi«$lppf State. MS 39762
TO OftOER OR FOR rOUR NEAJIEST DEAUR. CAU TOLi-FRE£
BOO-647-1800, Caii 60t 323^53^ In Mtss. and outslda contindntal Lf5A Telex 53-4590 MFJ STKV
t^ Se# U$t of Advert tsers on Page 195
73 Magazine ■ June^ 1984 59
Elegant Rotating
K9AZG did it right W4RNL makes it better. For sightless and sighted hams alike, this update
to a 1982 article will be revealing.
L B. Cebik W4RNL
2514 Dereck Drive, Apt H-1
Knoxvifle TN 37912
A simple and elegant so- lution to setting beam headings for both blind and sighted hams is the K9AZG automatic beam aimer (73, November, 1982). With a few voltage comparators, transistors, and relays (plus
the usual passive and pow- er-supply components), the device controls CDE and similar rotator control boxes so that by setting a single potentiometer, the operator can step back and relax as the beam turns to the de- sired heading and stops. Sightless hams now have an easy way to determine beam headings reliably, while the sighted ham can use the beam-turning time
for tune-up, logging, and other activities.
The original automatic beam aimer used two sec- tions of an LM339 quad volt- age comparator to detect
the desired change of direc- tion, as shown in Fig. 1. (Fig. 1 is redrawn from the origi- nal to show the individual comparators.) Each compar- ator controls a transistor switch and relay which in turn control the clockwise
and counterclockwise switch- es of the CDE box. Like any good idea, we can improve upon the original and over- come some potential prob- lems. This article describes some improvements which will prevent a few problems that some CDE rotator own- ers may encounter with the original design.
The Basic Idea
The basic idea behind the
Photo A. The completed beam aimer sks atop the rotator control box at the W4RNL operatmg position. The ac switch and power LED are to the left and the clockwise and counter- clockwise LEDs are to the right. The center knob is the direc- tion control prior to the addition of calibration markings.
60 73 Magazfne • June, 1964
Photo B. An interior view of the quick-fixed beam aimer with the improvement board to the right The front ryerf board con- tains the power supply and circuitry, while the rear board contains the relays (only two needed for the CD^4l
automatic beam aimer ap- pears in Fig. 2. The 500Ohm potentiometer in the rotator head changes value with di- rection, standing at mid- scale when the beam points north and at one of the ex- tremes as the beam points south. Fed by an unground- ed 13-volt supply, the rotat- ing arm creates a ground, thus changing the voltage across the left and right legs of the pot as the beam moves. From extreme point A to center we get a nega- tive voltage; from point B to center we get a positive vol- tage; and the absolute val- ues of the two add up to 1 3 volts.
A second potentiometer across the rotator pot (say, about 25k) will read 13 volts across its extremes. More significant for beam aiming, the voltage between the moving arm and ground will be zero when the arm and the rotator pot arm are equal percentages away from the same extreme point If the beam points north and the second pot is mid-scale, the voltage at the second pot arm will be zero. If we move the second pot counter- clockwise, leaving the beam north, we will show a posi- tive voltage. We get a nega- tive voltage if the second pot arm is clockwise with respect to the beam head- ing. Together, these voltages allow us to turn on one of two relays that close in par- allel to the CDE switches, thus activating the rotator That is the function of the K9AZC circuit
The maximum voltage that the comparators in Fig. 1 can see is either plus or mi- nus 13 volts. When the an- tenna is counterclockwise south and we move the sec- ond pot amrt clockwise to the other extreme, the arm shows ^13 volts to ground. In the opposite condition, when the antenna is clock* wbe south and the pot is ful- ly counterclockwise, the arm shows +13 volts. If both the antenna and the second pot
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are at either extreme, the pot amn ideally shows zero volts.
Design Limits ami Quidc Fexe$
Unfortunately, only some- times can we achieve the ideal conditions noted above. There are two design limits to the original beam aimer that may present problems to some hams First the CDE rotators have limit switches to shut off either clockwise or counterclockwise rota- tion at the south heading. Among other functions, the limit switches serve to keep us from wrapping antenna cables like vines around the rotator and mast stub. The limit switches may leave some residual voltage at ei- ther end of the scale. Imag- ine that the limit switches cut off the rotator at posi- tions X and Y in Fig. 2 If the second [X)t is at its extreme, some small voltage will exist and the relay will not open. K9AZG counters this at one end of the scale with a cali- bration pot, but the other end of the scale goes to ground.
The quick fix for this
noT^Ton POTEN |
POSlTfOM TIOMETFH |
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/ |
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1/ X s / |
1 / |
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Fig. 2. The basic elements of beam aiming.
problem is the substitution of a low negative^voltage cir- cuit to replace the ground
connection of pin 7 of the LM339. Fig, 3 shows a suit- able circuit using minimal
I
Phofo C An interiof view of the improved beam aimer shown from the opposite side of the case. The new input board stands an half-inch pillars over the LM339 socket and tran- sistors. The feedthrough barrier strip for rotator^ontrof-box connections is visible at the rear of the cabinet
73 Magazir}e • June, 1984 61
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Fig, 3. Eliminating residual negative-voltage effects.
components. The 20k pot trims the clockwise limit voltage to match the rotator cutoff point
The second design fimit concerns the LM339. This quad voltage comparator is not designed for negative in- put vottages on either the signal or reference lines. National Semiconductor lin> its negative excursions to —0-3 volts in tfieir rating sheets. Experiments on half a dozen 339s in the shack showed that between 6 and 8 volts negative input the comparator would cut off. There was no permanent damage, and the 339 sec- tion would come back on when the negative voltage
dropped below the limit toward zero.
The effect of this limita- tion is that when the anten- na is fully counterclockwise and the second pot arm goes fully clockwise, the comparator and its relay open up as the second pot passes east (i.e., about -7,5 volts). Thus, a rapid excur- sion from southwest to southeast might result in nothing happening or might require directional adjust- ments in small steps.
The quick fix for this de- sign limit is to keep the sec- ond pot arm voltage less than the comparator limit. Adding a 470k resistor be- tween the 22-f*F capacitor
and the branching 100k re- sistors to the comparator in- puts, as shown in Fig. 4, will keep the maximum voltage below 7. The beam aimer becomes a bit less sensitive since now each volt repre- sents around 50 degrees of rotation rather than 28 de- grees. However, control is positive, and precision re- mains quite adequate.
For those hams using the CD-44 and similar rotators, the third relay in the K9AZG design is unnecessary since there is no separate brake- solenoid circuit to control and no required delay be- tween the direction switch and brake-switch release To discover whether your rota- tor requires the third relay, check the rotator schematic
?5« DIRECTIONAL I
CDE CQIVTROL SOX TERUlMAL STRjp
1 10 VAC
TO SRAHI CONTACTS IN CD^ CONTROL BOX
Fig 5. A simplified beanrt ain}er for the C[M4 and stmHar rotators.
62 73 Magazine • June, 1984
in the operator's manual If pin 2 in the rotator is not connected to a brake cir- cuit then the unit uses an automatically-engaging disc brake. For this class of rota- tor, the extra relay contacts in the clockwise and coun- terclockwise switch relays may be connected in paral- lel and used to control di- rectly the ''brake" switch, which actually is a master ac switch for the rotator. Use K9AZG's precautions of bringing the ac to a female socket on the CDE control box rear panel and then to the beam-aimer cabinet
Fig. 5 shows all the modi- fications combined in a unit that works well with the CIIM4 rotator. These quick fixes, however, are not the best possible design for the beam aimer
Improving the Beam-Aimer Design
The automatic beam aim- er can be more generally im- proved by a little redesign. Fig. 6 shows the full set of improvements. First using LM311s with a dual supply from one 12-volt transform* er is simple enough, ^rid it provides for both positive and negative trimming of the voltagecomparator ref- erence lines as well as per- mitting the 311 to accept a +13- to —13-volt excursion The uncommitted collector of the 311 output allows for a zero-to-positive output swing to control the switch- ing transistors. This design thus overcomes both limita- tions of the original.
Second, a slight redesign of the delay circuit for the brake control (which is
needed for larger rotators using brake solenoids) will overcome a further poten- tial problem. The slow de- cay of the base voltage in the orginal brake-relay cir- cuit can create contact chatter and possible arcing as the coil voltage drops in the transistor-collector cir- cuit Additionally, the tran* sistor may draw an excessive load while the base voltage drops through the linear range toward cutoff. To cre- ate a very positive switching action, we need add only one more LM311, using it to set the delay. Its output switches rapidly, turning the transistor on and off with equal speed. In addition, we can add a variable delay to the 311 circuit and choose a value with the printed-cir- cuit-board pot during initial adjustment
Construction
Construction of the beam
aimer in any version is straightforward and well covered by K9AZG. Perf- board works well for proto- types, although pfinted<ir- cu it-board versions would make an excellent club proj- ect The photos show the W4RNL layout. In both pho» tographs, the rear board
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containing the relays for a CD-44 rotator is mounted a full inch above the case bot- tom to clear the socket pins. For the CD-44, the delay cir-
cuitry was omitted. The for- ward board containing the power supply and compara- tor circuit rests on half-inch pillars to ease front-panel
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connections. Almost any oth- er configuration will work as well. Follow K9AZC's cau- tions with respect to ac con- nections to the rotator-con- trol-unit brake switch, wheth- er or not it actually controls the brake in your unit,
One photograph shows the beam aimer with quick fixes prior to modifications for the LM311 comparators. To one side of the LM339 board is the LM311 circuitry board which supplanted the quick-fix version of the aim- er in the case. The new
Parts List
Part
Transformer. 12 V, 300 mA
Ac switch, SPST toggle
Fuse, 3AG, 1/8 to 1/4 A
Fuse holder, clip-in
1 N4001 , 50-plv power diode
7812 12*V regulator
7912 -12-V regulator
e-V zener diode, 1 W
lOOO-ziF, 25-V electrolytic capacitor
47iCHtF, 16-V eleclrotytic capacitor
22'^, 16-V electrolytic capacitor
5^, 16-V electrolytic capacitor
l^/tF, SO-V tantalum capacitor
A-pF, 50V tantalum capacitof
LM339 quad comparator
14^in DIP socket
LM31 1 voltage comparator
2N2222, NPN switching
transistor, T092 aprn DIP socket 1N914 silicon signal dfodes LEDs, colors to suit Fte^ay, 12*V, 75-mA cdl,
DPDT 3^ contacts, socket
2 2 2
3
QtiantHy Fig. 5 Fig. 6 1 1 1 1 2 1
1
1 2
1
1 1
1 1 1
1 1 1
3 5 4 3
Radio Shack Number
273-1385
275^12
170-1270
270-739
276-1101
276r1771
*
276561
272-1032
2721030
2721026
272-1024
2761712 2761999
2761617 2761995
2761620 2761622
275-206
Terminal strip, barrier or
feedthrough, 8 contact 25-kilohm potentiometer,
panel mount, and knob 20*kilohm PCB potentiometer l-megohm PCB potentiometer 220-Ohm, 174-W resistor 1-kilohm, 1/4'W resistor 2-kilohm, V4AN resistor lO-kllohm, 1/4-W resistor l6-kilohm, 1/4-W resistor 76kilohm, 1/4*W resistor 106kilohm, 1/4-W resistor 476ki!otim, 1/4-W resistor l-megohm, 1/4-W resistor Case, about 5' wide, 6'
deep, 3' high Perftxjard {cut from 4Vt *
by 6', or make PCB)
1
274-653
1 |
1 |
# |
2 |
2 |
217^336 |
1 |
217-338 |
|
1 |
||
5 |
6 |
|
1 |
||
3 |
5 2 |
|
2 |
2 |
|
2 |
2 |
|
1 |
||
2 |
2 |
27£>253
2761394
Miscellaneous wire, rotator cables solder, terminal pins, ac cord, grommet, etc.
*Note: Parts rvot listed with R,S. numbers are available from Dig! Key, Jameco, and other mall-order sources; or experiment with the nearest available valua
Total estimated cost with new parts: $25 to $35.
73 Magazine * June, 1984 63
Hl-Q BALUN
For dipoies. yagls, inverted
vees and doublets
Replaces center insulator
Puts power in antenna
Broadbanded 3-40 MHz,
Small liglitweight and
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Center fed witti 100 feet of low loss PVC covered
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Includes center insulator with an eye hook for
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Includes custom molded insulators molded of top
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Complete installation instructions Included
Overall length 135 feet, less when erected as an
inverted vee or sloper
Handles 2 kw PEP & covers 160 through 10 meters
fVlay be trimmed to fit small city lots
Only $2^95
DiPOLES
MODEL |
BAMDS |
iENGTH |
PftlCE |
Di poles |
|||
D80 |
ao/75 |
130' |
S319S |
D40 |
40/15 |
m' |
28^5 |
D'20 |
20 |
33 |
27.95 |
D 15 |
15 |
22 |
2695 |
DIO |
10 |
16 |
2595 |
Shortened dipoles |
|||
30.30 |
mi^ |
90^ |
35,95 |
50^40 |
40 |
45 |
33 95 |
Pirallel di poles |
|||
poeoio |
80.40.20,10/15 |
130 |
43,95 |
PD-4010 |
40.20,10/15 |
66' |
37 95 |
PD-eoflO |
80,4^15 |
T30 |
39 95 |
PO-4020 |
40.20^15 |
66 |
33.95 |
Dipote shoiienfirs — only, same as Included m SD models S-80 8&75 S^3 95/pr
S'40 40 T2.9S/pr
All anrennas are complete wtlh a HIO Saltin, No 14 antenna wire, insulators, lOO' nylon antenna support rope (SD models only 50), raied for fulf l&gaf power Antennas may be used as an inverted V. and may also be used by MARS or SWLs.
Antenna accessories — available with antenna orders Nyion guy rope, 450 lb. test. 100 feel $4 49
Molded Dogtione Type antenna Insulators 1 .00/pr
SO-239 coax connectors 55
No, 14 7/22 Stranded hard drawn copper antenna w^re ,Q8/tt
ALL PRICES ARE UPS PAID CONTINENTAL USA
AvBtfabfe at your f0\/oni& deafer of ora^r atrect from
Van Gorden Engineering
P.O. Box 21305 • South Euclid, Ohio 44121
Dealer Inquiries Invited
board contains its own nega- tive regulator, replacing the low-voltage zener used in the quick^fix versions, as well as the 311 comparators and new input resistors. Renrroving the IC from the original version permitted easy substitution of the im- proved circuit Except for a power lead to the negative supply and an input lead from the direction potenti- ometer, all other connec- tions go through a DIP cable and plug into the vacated LM339 socket As the sec- ond interior photo shows, the new board mounts above the 339 socket and transistors on half-inch pil- lars. The increased sensitivi- ty to small knob rotations, with preservation of all of the quick-fix benefits, made the installation well worth the effort
The mode of construction illustrated in the photo- graphs resulted from contin^ uing experimentation with the circuitry. I do not recom-
mend it except as an exam- ple of how noncritica! dc cir- cuits are with respect to layout Any convenient lay- out will do, including possi- ble installations inside the CDE rotator cabinet
These design improve- ments are slight overall but they may serve to keep a first-time builder from grow^ ing discouraged in the pro- cess of trying the automatic beam aimer Without know- ing where to look for clues, the source of anomalies can be frustrating. However, K9AZG's basic idea is both sound and elegant in its sim- plicity. So too were his mo- tives. If you know a sightless ham who needs a better way to control his or her beam direction, follow K9AZG's lead and build a version of the automatic beam aimer The satisfaction of helping a fellow ham get additional fun out of operating will more than repay the small investment in easily-avail- able components ■
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• Can tie astoniZKl im LANS and tt|i to 5£K RAJMI
MODEL PK-1 wired & testecf w/4K RAM Additfona! memory (up lo 14K total)
Manual only— credited wilti purchase
(add $2.00 for shipping) RTTY adapter board
Custom cabinet— includes installation of TNC, on/off switch. LED pwr indicator, reset button & pwr jack Dimensions: 4,5 x 9.5 x t5 inches Pwr required: +12 VDC. approx. 200 ma. Contact GLB for additional info and avaifsbfe options.
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64 73 Magazine • June, 1984
FINE GOLD Presents
HAM JEWELRY
in 14K Solid Gold ALL PIECES ACTUAL SIZE!
KAIKAV I
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73 Magazine * June, 1984 65
m
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•«*
||4i 10-
m
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Food for thought.
Our new Universal Tone Encoder lends it* s versatility to all tastes* The menu includes all CTCSS, as well as Burst Tones, Touch Tones, and Test Tones. No counter or test equipment required to set frequency -just dial it in. While traveling, use it on your Amateur transceiver to access tone operated systems, or in your service van to check out your customers repeaters; also, as a piece of test equipment to modulate your Service Monitor or signal generator It can even operate off an internal nine volt battery, and is available for one day delivery, backed by our one year warranty.
• All tones in Group A and Group B are included.
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Group A
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Requiem for the Tube
This pleasing project is perfect for pentodes. It could be the last time you use them.
Around the shacks of most amateurs, one
easily can find numerous antique oddball electron
tubes. Most of them are too small to be made Into lamps and too large for a tie clasp. But stilt, you want to
dig out of those shoe boxes those nostalgic reminders of the good old days and do something with them which
is both functional and at- tractive. Combining the beauty of nature's wood with the glass and metal of
^
4
I
High-power pentode. 73 Magazine * June» 1984
Klystron,
'^Family scene.
ff
man in the form of book- ends is a good exampfe which should please even the most discerning XYL.
First, you need to visit your local lumber yard to purchase six-inch by one- inch-thick shelving. (Even though it IS called 1", it measures only Va " thickj The material is then cut into two 6 Vi *" and two 4^/4 * lengths. Then, using a band- saw and chisel, a blind dovetail mortise is formed as shown in Fig. 1 . Note that the dovetail is only Vi" daep so that it doesn't even appear on the inside of the bookend. Each piece is then sanded, and holes are drilled for the tube sockets. The two pairs of wood pieces are then glued and nailed together before ap- plying stain and varnish.
Next, a plate is attached
-"Ste Usl of Ad^erusitr^ on page 114
to the bottom of the book- end using contact cement This plate, which keeps the bookend from sliding, can be made of thin aluminum or wood veneer.
Finally, the tube sockets are screwed down into the drilled holes. For some large tubes such as the 4400A variety, one might simply drill the 5 holes for the tube pins and then glue the tube in place.
There are several good candidates for old tubes: medium-power transmit- ting tubes such as the 4-1 25 A, 1625, 807, and 24C; klystrons such as the 2K25, 2K26, and 41 7 B, which look like miniature robots; light- house tubes such as the 2C39, 2C40, and 2C43; and acorn tubes such as the 954 through 959 series. A family
ifote F0R riie£ socket
Fig. 1.
scene of tubes with two plate caps was formed on one set of bookends using
the RK-34 (father), 2C26 (mother), and HY75A or HY114-B (baby) tubes. ■
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73 Magazine • June, 1984 69
Ken Kohhoff KdAXH/? 1 103 Carlson ChGyenne WV* 32009
New Orders for the R-109
Two bucks and ten nninutes are all it takes
to re-enlist a vintage receiver.
i «
The R-108, R-109, and R-110 FM Army surplus receivers are readily avail- able, very well constructed, and best of all, inexpensive. They are broadband FM sets covering 20 MHz to 55 MHz,
depending on which set is used. These sets can be used with no conversion on 6- or 10-meter FM, They are fully tunable over their full range. 1 have had good results us- ing them on various proj-
ects, including converting an R-109 to SSB for IOmeter use. The sets are very sen- sitive, using mostly one-volt filament tubes. All of the receivers I obtained came with a 24-vo!t plug-in power
25 2VDC
1X21
m
'5000
OUTPUT I33VDC
'I
•iOTE
CUWClTOnS ARE IN t^^.
scncs-omvc yisfutot
F/g. t. Original power supply.
l»ffUT
LZ
I'll
Jf
C3A
5000
* iJlil
euTfuf
SHUNT -;)fttVf VIBRATOn
El
♦Wtt
Llii.ES^ OTHEHWISf 5«Cnni RESISTORS are: \H OHMS. CAPACITORS ARE IN ^^^.
SERIES -tJftlVE v«S«4T0fi
fig. 2. Power supply modified for 12-14 voits dc, 70 73 Magazine • June, 1984
supply (PP-282) which draws about 4 Amps. This is an in- convenient voltage and cur- rent for mobile use or fixed operation when only 12 volts at low cun'ent is available.
Converting the 24-voft plugrin power supply to 12 volts is easy, quick, and in- expensive. The only part re- quired is a Radio Shack 1-Amp, 40Ovolt bridge rec- tifier, catalog number 276- 1173, at $1.89. This plus a lit- tle solder and wire is all that is needed After the conver- sion, the unit draws only 1 5 Amps with 12-14 volts input
Power supply PP-282 ts lo- cated in the receiver as a plug- in unit. Remove the re- ceiver from the case by tunv ing the six hand screws 45 degrees, then pulling the re- ceiver out. Loosen the three retaining screws, slide the retaining bar over, and pull out the supply by the wire handle. Remove four screws to gain access to the supply. Two are on the lower back and one each on the top and bottom of the front The bottom plate is then re- moved and the upper cover pulled off.
Under-tfie-chassis changes are covered first The com- ponents are conveniently marked— thank you, US Ar* my. Check each step as you proceed, 1) Solder a wire across the
nARSEN ANTENNAS TRAVEL IN THE FAST LANE
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^See List ot Advertisers on page V4
73 Magazine • June, 1984 71
R-U)9 10-meter FM receiver with internal power supply PP-28Z
large 1.6-Ohm resistor, R2, shorting it out of the circuit
2) Disconnect the three wires (2 v^How, 1 red) from terminals 4, 5, and 6 of power transformer T1 ,
3) Solder the yellow wire formerly on pin 4 of Tl to pin 6 on vibrator socket X3.
4) Solder the yellow wire formerly on pin 6 of Tl to pin 1 on socket X3.
5) Solder the 1-Amp, 400- volt bridge wires marked ac to temninals 4 and 6 on Tl.
6) Solder the wire on the rectifier marked — (nega- tive) to ground, pin 7 of socket X3
7) Solder the red wire fomierly on pin 5 of Tl to the + (positive) wire of the rectifer.
8) Tum the supply over and make two changes to power plug XI ,
9} Move the bare wire from pin 6 of XI to pin 5 of XI.
10) Solder a wire from pin 3 of X1 to pin 2 of XI
Bottom view vi/kh the nyxlified power supply in place.
11) Reinstall the power- supply cover and base plate and plug the unit into the re- ceiver; tighten the retaining bar screws.
12) In the receiver, be sure that switch SI is in the 6n2/24"Volt position.
13) On the outside of the receiver, install a jumper wire into the Receiver Con- trol plug between pins J and H. Leave the insulation on
the center of the jumper because 100 volts lives there.
14) Put the receiver back into the case and apply 12- 14 volts dc plus to pin B, negative to ground, pin C, on the power plug. That completes the conversion to 12-14 volts dcB
Author's note; The powersupply converskin also wodcs with the RT-70 6-metaf FM Iransc^lver.
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72 73 Magazine • June, 1934
wternatiqwal)
Bach month, 73 brings you ham-radh news from around the world. In this cotlection of rs- ports from our foreign corre- spondents, we present the lah est news in OX, contests, and emnts, as weff as keep you abreast of the technical achievements of hams fn other countries,
if you wouid i/fie to contribute to your country's coiumn, write to your country's correspondent or to 7Z: Amateur Radio's Technical Journal, Pine Street, Peterborough NH 03458, USA, Attn:Jaci^ Burnett.
ARGENTINA
Atb0fto Sitva iuroz Qtvpo Arg^ntino tfe CW Cartos Ditr0f 2025 1SS4 Longcftamfia Buenos Aires Arg^ntinA
Ctrfos ViMnrt9 CMmeiro PYrCC Rum AfonsG Pwta, 49rTQf 20270 Rio <f9 Janetro BraiH
THE LUSZJ SOUTH SHETLAi4D ISLANDS QX^EDfTlON
Pushed by thie oame marveloua fm- pulae, the spirit of radio amateurs, the GACW (CW Ardent I r>e Group) SFX^naored the LU3Z1 DXpedniofi lo the South Shet- land fslar>ds. following} the success of the previous LU7X {l^^ and LBD/X (-1982] ex- psditlonB lo the States Islands for the CO WOfldwda OW GontasL
AwBfe of ita responalWI^ty. the GAGW group opefetors for such OXpeditions afe chosen from among the most rel iable and skJliful DX men Lo the group, and the sfHendfd results In former and presefit D?<peditiofts show this lo have be&n done, lor opefating capabilities, techniques, rules, and ethics were respected to the ut- moftt.
An expedlitfort to th« Antarctic conlk fienf is extremely ^tperaive. tMJt ttM care- fully planned project of Jor^e F. Vrsalo- vlch LU7XP was approved by the Oifecion Maciofval del Ante ret Ico (Antarctic Nation- al M$nAg#fn6ntl which ruCes aFF activiti^ oonosming the Antarctic continent In Af* gentlna— the Inatltuto An t arc t Ico Argenti- no (Argentine Antarctic Institute) In charge of ail scienllfic Invts^ligations being one of Its most imponant brarbcheis.
SOp ullra^Kpefislve transportation and togtstlcal hefp were assured by the Argen- tine governrnent; other problems were our rttttponslbiUtyt
Art>erto LUIDZ started the Job to Qet all that was mlssln<g: Oscaf Rosity LUSDVO brought a rotator, Jorge Alrrkoyraghl UJ1EWL ooi a 3.&^W genmator fion^ the Aff Force, hjttl and trans port at ion to the ^OokA w«ee the job of Benjamin C. Cavat- lln LUdEMB, togethef with a secoruj,
4wB-kW, generator. A S4-fneter lower caine from LliflDQ, & 3-e1ement trl bander Palonv bo beam was the contrlbistlon of Salvador Parombo LU3FG, and Cartoe Rodriguez LU2DFX thought his own transceiver. Ronaldo Sllva I.U3EDZ chocked and pre- pared the genera tora,
LU7XP. LUaDQ. and LU1DZ were to be the team, bul elmoat^ast-momenl rea- sons stO{3ped LUTXP and IJU8DO in Argefh tlna. Ronaldo Silva LU3E0Z became the laet-minute solution, and It now became a two^man teamu
On board Ihe ship, the Bahfs Psrafso, Alberto and Ror^ldo left Buenoa Ain^ January S. 1983, reaching Potter Gove on 25th of May Island elghl days later, after a perfectly normal trip except for a storm In Drake's PassaiQe which kept some in bed for 2* hours, seasick T f fom January ^3 to 16, helicopters and boats landed all equip- ment to go to the scientific station, Ten- lente Jubany.
Ronaldo LUSEDZ, meehanics king, as- sembled generators, tower, and all during five long days of steady ra^n and snow and 40* (0 eo^kph wlnd^ wtth gusts ta 90^ A one-hour period was all the time Ronaldo could stand before getting shelter for rest again.
And then, at 1315Z January 16» CW on 20ni, came the first contact, with W5RK, followed by CP7GM, LU9AJC, and LLTTXP. The first SSB QSO was with LUJUS/mo- btle on January 281h, and then came LU2CM/moblleH LU1DBQ, LU4QD, and othersu
Puffng the seventh day of operation, fttlef a IT-hour pi leu p, excessive eai- phone use caused Alberto LUtQZ trouble and fatigue, and the Teniente Jutxany sta- tion physjcian had to stop CW operatior^ for a wtiile, Alberto then had a two-day SSB operation.
During a rest period, Daniel VerganI, chief tiotanist of tt>e Mafmmatlan Study Plan, took Ofwrators on a tioat trip near Mariana Cove. The t)oat came upon four Jubarta whales, and Pablo LJumberg, the diver managing Ihe boat, happjiy got to not more than ten or fifteen meters from the whales, A possible emergency dJve for all into frigid water was rather worrying]
An FT-101E transceiver and an FL- 2l0dZ amplifier held up perfectly for the very hard 30-day operatioa alor»g with a Bencher key and &n Auteh manipulaior with CMOS memory. SSB operations were ereat fun, loo; discipline and respect for rules and ethics were perfectly ot^vlous.
Umm baitda, surprisingly, were very hard to of»erate, with QRU level close to S5, and S7 on 20 meters. This was true for wee-ks, which will give you an Ideal
Openings to Z3 and 7 MHz coincided with tn« best conditions on 14 MH2. so the question was; do a good job on Ihe SO^meter band or try some problematic OSOs on lower tiends? Conditions on 20 were good until 0430Z, tnit then trans- horizon radar came on> SB plus 40! From daybreak to afternoon, until 2QQ0Z bands were closed, with few openings to 10 and 15 meters. Only 5 good openings on 28 MHz to Eurofse ftJid North America, not so good to Africa tnd w»t Asia. Funny, dur^ Ing two nl{}hts on IS meters and Ciose to 0400Z, we could OSO Asia but sigi\ats didn't ever^ ri>ove the S-meterf (Dn 20 meiefs, from 090GZ to 11(X3Z, Asia was worked with the bedm to the weAl) From
Ttm hsficopter moved sit squipfTmot £iefwa«/T bereft ami ship.
02302 to 0500Z, the antenna tDeamed west of America presented stror^g ect>o trou- bles; the same to Oceania, A Tahiti signal came 30 d 6 over 9 no matter where the afi- tenna was C>e3med!
On 20 meters, an open road could be found by looking for band noise; between 330^ and 30°, noise showed po&sibltltles; due south was absolute silence.
For Alberto, a 160-melef fover, the hap- piest moments were when the 57 stations In South America, Central America. North America, and Europe all QSO'd 160 meters!
Durimg fMf periods^ an automatic beacon opera led CW at 28277, 30 Watts* dipoie antenna, for Ionospheric observa- tions. It was exciting to hear the LUIUG 5-Watt beat^Tn, vertical antenna. 282S6 kHz, t>ack In General PfcoCrty. province of La Pampa, 124 meters above sea level (a IZBYTandELBSI,
Exciting, too, was the visit of the WiHf- waw, Willy de Rose's (VK9XR/MM) 9-metef little yacht, a traveller of all seas. He lunched with Alberto but had to leave quickly— a storm coming.
Durir>g \fm 28-day operation, 20,125 QSOs were made, 17,B&4 in CW and 2^471
SSB, Totals tjy bands: 1 60m— 57, dOm^ 204, 40m-1,105. 20m— 8,ei§, 15m— 6,414, and 10m— 3,429. Six continents and 123 countries were worked. THE QSO was on 100m wah K7POS/MM sailing the North Pacific off the Alaska coast! A 509 RST and even a short chat was possible!
A Paiombo tr [bander was used for high bands: on 40m, SOm, and 160m an inverted V did well, BOm with the V at 15 meters high, and the others with the V 13 meters high.
The Teniente Jubany generator pow- end ttie station most of the time; our own generators were used only when power stopped from the base, from QSOiK to
oaooz
During pi leu pa, as many as 1B6 QSOs were realized in one hour^ but after we got to 12.000 QSOs^ pHeup^ decreased and the rate carrie down to 120 QSOs per hour, tops.
Ending Kme came, and in a hurry ail was disassembJed because Ihe ship was neer the beach and all ecjulpment had to be packed and taken aboard, in spite of strong winds and night coming. But anxle^ ty lo go home brought new strength to Alberto and Ronaldo, and in at>out ten
LUIDZ on r/M key tt LU321.
73 Magazine • J una J 984 73
hours Ihgy wore aboard, going back home after their 53-day a[jventure. a marvelous experience, and once again an expedition proved GACW's capab41itte« in such cased with hrftt-class results.
Our special graiiiude lo LietJtenant Goionel Luis Font ana of the ON A. to allin' atltutlona who K&iped us. to friends «nd membefs or the GACW, ar>d to all oper- atora who helped U3 with their patience, understand! r>g. &nd support, thus makir>g the LU3Z] South Sheiiand Isiands DXpedi- tlon a success to be ren^embered.
OS La were to be deUvered to GACW, Carlos Dihet 2t)25, 1854 Longchamps, Buenos Airea, Ajgnntlaa^AJt address well kiM>wn to DXers.
^k^
^r^*
AUSTRALIA
J. E Joyce VK3YJ 44 Wmn Sf/wi A/font 3018 Victoria Auntr&tta
There are many contests on the Aftm- teur-fadlo bands throughout the year and Australia has its fair shafe. writh rDOSt ol us entering these contests, either serious- ly or in a tighthearted manner.
Howevef , there is one contest In Austra- tia that la rvever entered into with a Mlp- par^ or H^t hearted manner t>ecause of what It represents.
I am speaking, of course, of our Remem- brance Day Contest, held on the closest weekend to August 15 each year to honor the Australian amateurs who fost Iheir tbtm In WVyil, This date. August tS, has special significance for us as it was on that day, In 1345. that all WWII hostilities ceased In the Pacific area.
The trophy Itself la of typical amateur- radi4><oriented design, featuririg a yagi arv tenna mounted on a tower. Tin is trophy ^s perpetual, being awardef^ each yeaf to the winning division of the WIA (WIrelesi in- atkuteof Austral I aV
As this is a local competition, wltt^ points being scored only for contacts be- Iween Australian call areas plu$ New Zea- fand (e.g., VKI lo VK0 and ZU on all ama- teur bands. It does create a lot of friendly rIvaJry between each state's amateurs. wllf% the winning state or division hailing the honor orf keeping the trophy at their headquarters until they hand It Over to the rvext winning division— but keeping It, of course, If they win 11 again. Their terrrt as trophy holder la not forgotten as each win- ner has its name engraved on a metal shield attached to ttie tiase ol the tropfiy.
The reigning champions of the RD Con- tsat are the South Australians (VK5), with their latest win In 19&3 maKing il ten wins out of the last twelve years. A remarkable achievement consit^ing that fhey are competing against a much larger amateur population in |h© eastern stales, e.g.. VK2 or VK3.
We have, over recent years, had Hew Zea3ande>rs also Sfiterlng into this eorrv petFtion with a lot of Interest but, as yet, oo luck In winning this trophy. Also In this category are the P29 (ex-VKS Papua New Guinea} stations.
Certificates are also awarded to the fOp-scOflng stations in each division, with th« winning division beirig decided by the formula: Total points times weighting lac- tor, divided by tciat divisional llcer>ses>
Each division is divided as follows: • VKl^Austraiian Capita) Teffttoriee
74 73 Magazine • June, 1964
Landing tmaeh, 600 mBt&rs from the QTH,
QTH $it0 at the TBniente Juti^any station.
• VK2— New South Waled (plus Norfolk Inland, IjQcd Howe Island)
• VK3— Victoria (and remaindef of Aus- tralian Antarctica)
• VK4— Queensland (and offshore Is* lands— Willis Ar\6 Thursday)
• VIC&— South Australia (and Northern TerritOfy-VK8)
• VKS— West Australia (and offshore IS' lands Including Cocos, Keeling, Christ* mas^ Heard, and part of Australian Antarc* tica)
• VK7 — Tasmania (and Macquarle Is* land)
The VKfl Is by far the most sought after, as a contact with them gives you the greatest single number of points.
In recent yeai^ it has been the policy of ttie WIA to have some rh^itabie person open this contest. So Im, we have had three of our Prln^ Ministers honoring us with their presence, the latest one being the Rt. Hon. Malcolm Eraser, in 197&. We also have had two Miniatera of Communi- cation arKJ several State Governors, with Mr Richard E. Gutler, Oy. Sec, Gen., ITU. doing honors for the occasion in 1979. showing that members of our government and other rM>table dignitaries hold this contest, arxj wftat it star>ds tot. In the highest esteem.
Listening for this contest, you won't find the uaual QRM all over the banda that we hear with some of the larger contests, for we have only approximately 14.000 lil- censed amateurs In Australia, with a percentage of these reslricled to VHF and above. Atso, not ali of the remaining amateurs are Interested In contests, so it malces it a real relaxed style ol operating, with time to have a qu^ck chat with old
frteods or overseas stations looking for a St^Oit QSO or new country— particularly In our early hours of the morning when any contact to keep you awake Is very welcome.
K CALLS
The K can te a special license introduced In 1960 to cater to those amateurs who hold two ilcensesn namely the Novice and the Umited. There has been an abrvormall^ ly with this class of license which our DOC (Departrrient of Communications) has recUfied this year.
Previously, the problem had been that as a Limited license-holder able to oper- ate on all banda above 50 MHz. you did not have to pass any CW teat gWlrig you a very technically-minded peraon who has passed the equivalent of our fyll-cali ll> cense in the theory aspect but has Called, or has not tried, the test on CW at 10 wpm. sef>d and rece^.
The Movlce license gives you accsss to the HF bands of 00, 1&. and 10 meters, but to paas thla teat, you need CW at 5 wpm, send and receive, so it is possible tor an amateur here to hold two licenses, one for hii Novice CAM starting with^ e.g., VK3 -N. -V, Of -P, and bis Limited starting with VK3 -X -Y, or -Z The result was much confusion on the bands.
Thts caused our DOC to create the K caJl. giving trie holder of t>oth tlcenses the option ol usir^ (but not rsQuI ring) orte cam- aign only^ starting with a Kt e.g., VK3K- -.
The problem was that as a Novice he could operate on CW, but as a Limited he could not operate CW on Ifre higher fre- quencies. The DOC has now granted the
holders ot this special call the privilege of CW operations above 50 MHz.
So, If you hear a '^KSK operating on the higher frequencies using CW. please slow down, as his CW speed may be only 5 wpm. Some^ with their keyt>oards, will be able to operate at highef apeeds, but as our exam test Is with a hand key, theif ex- pertise on the keyboard Is to oo avail untlf they pass [tie tiand-^ait test to gaJn thai fuH-call license.
BRAZIL
Carfos ViannB C^rnmro PYfCC Rua Afomo Perm, ^ffOl 20270 Rio de JeneirQ Br^ii
Qarsan RtBStn PYIAPS/PYTAPS PO Box 721 T8, Copacabana 20000 Rio ae Jamiro, RJ
anur
HEW PREFIXES IN BRAZIL
SJnce June, 19/5. Brazilian states have had a special prefix so that an Immediate ktefHl fleet ion was possible for radio ama* teurs in Brazil as soon as the call was given. Brazil has nine regions and 26 states and territories. ThB PY prefix was changed to PP, PT, PR, PS, PW, PV, or PU In certain rei}ions. according to the num- ber of states in eacfi.
To Identify C^ass C radio amateurs (at- lowed only phone mode on eo, 160, VHF and UHF, and CW mode on ali bands ex- cept 20 meters), three-letter suffixes start- IrkQ with W, X, and ¥ were in all prefixes now in use.
Also wfth the PY§ prefix tor Brazilian ocean islands and OXCC ''countries" (Fer- nando de Noronha. Trindade, and S. Pe- ter(S. Paul), this sure was a hit with prefix- hunters all ovm the world, deilghted with new poasfbllities.
But what couldn't be imagiried by Bra- zilian author 11 tes was the tremendous run to Class C, alr^e VHF f aclfltles and conve- niences and a "rio-code" license were a very strong appeal to former CSsrs and otfwrs.
VHF being their only gt:m\. almost no one cared lor HF restrictions, and so VHF operators came by the thousands, thus "blowing up" the system by using up all "thro toiler combirtatiorts started by W, K and Yf So a new law has been published in Brazil, modifying Class C prefixes and creating a new curiosity for preflx- huniers.
From February 13^ 1984, Class A and B radio amateurs {except tor Amapa Ter* ritory— PU8,..J will continue with tt*eir actual call letters, prefixes, regions, and sufflKes aa before; Class A end B radio amateurs in Amapa tertHory will be PY6, like fn Para State.
ImpGTtanl modi Neat Ions con%a to Ciass C operators now all urKJet PU prefixes from 1 to 9, according to the region they belong to. No more PP, FT, or PY, but only as follows:
• 1 Regton— PUl— Rio de Janeiro and Esptf Ito Santo States
• 2 Heglon~PU2— Sao Paulo, Goias, and Federal District
• Z Region— PU3— Rio Grande do Sul Stale
• 4 Region— PIK— Ml nas Gerala Btate
• 5 Region— F*U5— Parana and Santa Ca- tarlna States
• 6 Region— Pl>e—&ahb mnd SergSpe Statea
• 7 Region- Plf7^Pemambuco, Ata-
QCiftB, Para(tia, Rio Grand« do UqtXB, «nd Csara$t«tM
• a Regroii— PU8— Para. Amazonas. Ma- rannao, Plau*, Acre, Rondonia, and Ama- pa States, and Rorafma Tarrltory
• 9 Region— PUfi—Mflto G rosso and Mato Grosso do Sut Stales^ PUt— Ocean IslanSs FemarKto ^ Noronha, Trjmlade, S. Patflr/S. Paul Islands
So wtiat'a going to happen from aow on? Well NEW Class C radio amatmj<s wit) tiave their calh according to PU prefix d<etemiiriattOfi5; afready pteUted radio amateurs a tew at a time wlii be called to DENTEL (Ihe Brazilian Tel eco^rifnunl ca- tions National Oepadmant) and will ham their pmlixeB changed according 1o tfm new law. This wilt take sofne tifrte, for Class C operations fn Brazil are a great majority spread all over our bin oOiintry; this will maan trouble for our authof^tfes.
Du« to this new law, ttie PUBBt opera- tion from Macapa, In Amapa, took place under a ZYBBI call (QSL information to FVS6I as anrfOunoedOv a last-minute change •Hhough ihe OX News sheet aod others had f pread trie worcL
CW operators will imve a better chance to OSO the new PU Class C since regula- llor\s allow them almost all QW barnls ex- oef>t 20 meters!
de PYTCC
MATEURS VISFT PR££JOENT FtauOAEOO
Directors of the Brazilian Amateur Radio LeaQMe (LA9RE) were t^irKHy received In the Palace by the Provident of BiazH, Gerveraj Jo4:q Bapttsta Flguelredo- TakinQ tlie o|i(9on unity, they invito him to head the fir»t meeting of ttie 4th Brazilian Gorv vanttofi hatd in the city of Bra si Ha to cele- brate the 5Dth annlversafy of tKe League. The audience lasted about tfiirly-five min< utoi^ and the President asked questions about amateur-radio activities in BrazJi. Finishing the audience, the President sur- prised everybody wt>an he said that he also expects to be an operarof after his time as President. In fifty years of ttie League, it was the first tfme that a group of operators was received by a Brazilian President.
THE DEATH OF W4KCF
With deep regret, the Buffetfn edited by the Brazilian League recorded the passing of VN:tof C. C^ark W4KFC, President ol the Amerte^n Radio Re^ay League. The death of Vic brought a painful sense of loss to alt amateurs in the world.
HEDfTATlON
Inge Tobias de Aguiar PY2JY Is well hiiown as tt^ controller of tf>e Brazilian Young Ladies Net, meeting every Wednes- day on 14.24B MHz from 1 900 to 2l00 UTC. One nigfil^ atx>ut two years ago. while in a hoipital after a surgical operation, the consaquer^ces of which were not then known, ahe wrote on a piece of paper this maditatlon, whJich I will tran»itte, trying to give the same meaning as it had \n For-
tUpUOTC
My Qod, it i diB now, / wffi dio happy Bw^ause t knew frfendshfp, Kifidness. coffabo/ation, and a/rruitm. Siftca my first day as an amataur. Up to now. nobody disappointed ma- From South to North, from Wast to East, t have M^ndS and wh^t IhBy hmAr ma, TiMy become happy to meet ma again. A lot of iham, f miU navar know pefsorratly. Oniy through thair QBLs or tatters. Maarfr^ thair voices i*m happy wtmn t can raccgnfia A taw of tham wttom i had krtomn
partonafiy tn aomaplace in the wortd.
Thay rvi^ived me tike a sister. And we Bn/oyed oorsetves wtfh
happfmsa, Uka very ofd good friends. Wh$n t partfcipated in any emergency
operation, t nnwf sfayed sio/m. A/ways / had Mends who h^ip^ me. I could undarstand ttwt amateur-radio
activity fs afw^y^ ff lands working together. When I needed haip, t Foeeived it imrmdiatsty. Nice friends!
T0b0an Amateur is to live with happihess^ H^spirtess to haw $c many friends On whom yoa can count atwaya. Happiness to have the chance to tietfl
someone with difficuittes^ Sadness when you rwed to transmit bad
ftews. Happiness to be acQi/ainted to another
friends Happfness to meet someone again. HapplnBss to have the chance to heip
impartiaiiy. Artd i am happy because / am sure /
performed my duty.
d# PY1APS
GREAT BRITAIN
Jett Maynard G4BJA to Churchfields WidnasWABSRP Che&hire England
THE UK SCENE
I wonder at the continuin>g ingenuity of equipment designers to produce more and more exciting products that do not really offer any significant improvements in performaiM^ In reiatlofi to their fun- damefital job (or principal function)!
The prime example of this must t»e in the ongohnQ development of radJo receiv- ers lor th« efithu^iastlc listener (rather tfian the hi-fi enthusiast or casual observ- er). There do not seem to have been any significant strides In performance recent- ly. (Performance, that is, meaaured by way of sensithrity. signaMo-rwise ratio, inter- modutatiofv distort ion. or whatever^ And yet the r^aw models continue to hit the streets a^d continue to persuade large numt»ers of listeners (o part with large quantities of hard-eamied cash. The most recent model is the Sony ICF 7600O syn~ thesizod fun<:overage shortwave receiver (with Band 2 Fl^ coverage )ust in case you get fed up with the ORN and OSB).
J have had a Sony tCF 2001 for atKHJt 18 months Sine* I acquired it for a trip to N** gerla. Whilst in that country I wanted, ol> viously^ to be abJe to tune In to BBC World Servica (tf only to remind myself that home was stHl there), I aJso rieeded to make some subjective assessments of shortwave propagation from up country to l-agos. TT>a iCF 2O01 was a useful piece of kit, partlcufafly in an area with a crowded shortwave spectrum. Being able to iTfid readily a particular transmission simply by keying Its frequency was a positive bonus.
That was the good news-- the bad was the size and weight of the unit (although much smaller than a 'convenlional" shortwave receiver} and Its voracious ap- petite for D ceils which f had to lake In quantity to avoid being dead In the bush.
The new model, thougti, comas very close to the ahlrt- or vest-pocket short-
wave radio (of reasonable performance, that ls)r Although only srnall enough to lit Into a poacher's pocket, it will fit easily in- to a comer of my bftefcase. This means I can carry it (and Its AA-size dry cells) on my many business trips. And that was the lustlfication for payir^g a£»out $250. hfow wt>en I am away on busine&s. I can still listen to the world.
It never ceases to amaze me just how much t rattle there still is on the shortwave bands. Satellites and computers and othef hi-tech gadget ry are OK in their place, tHjt, seemingly, there I e still no suE>- stltute for tried and tested methods.
A recent bringing together of comput- ers and shortwave radio may bo of Interest to aeronaut leal I y-^inded readers. A num- t>er of utility stations around the wortd transmit Volmet messages giving plalrh language weattier fnfofmatlon for princi- pal airports. The tKoadcasts, including In- formation such as cloud base, visibiflty, current weather, etc., are Intended primar- ily for aircrew. The Boyal Air Force (BAF) fs responsible for some Volmet transmis- sions In trie UK. On 4.720 MHz they now use a computer-synthesized voice. The station seems to broadcast all day.
UK CONTESTS
The Radio Society of Great Britain (RSG8) organizes and coordinates a great many contests throughout each year. Many of these are on the VHF bands and atx>ve (70 MHz, 144 MHz. 432 MHz. 1296 MHz. and Ngher Iraquencies t)eing repre- sented) and of ilttle interest, therefore, to non-European readers. There are, how- ever, a number of HF contests wjifh an errv ph^la on working UK stations. Those fot- lowing the publication date of this Issue Of 73 Include:
• 2-3 JuAft
• 23-24 June
• tSJuly
• 1-2 September
• 7 0ctDbier
• 21 October
• 10-11 November
• 1 2 Novemtter, 20 November, 28 No*emt)er,
S Decemtwf . and 14 December
HF National Field Day Summer U MHz ORP Field Day SSB Field Day 21-38 MHz phone 2IMHZCW 2nd1.BMHz
28 MHz Cumulative
In all cases. UK stations will tie looking for as many DX multipliers as they can flnd^ DX stations will find these dates use- ful for Increasing their log entries of all UK prefixes.
ISRAEL
Hon Gang 4Z4l^K Kibbutz Urtm Negev MohUe f^oot Otiica 85530 tsraei
In the last few coiumns, I've dealt with specific areas of amateur rad^o in Israel. In the meantime, a number of news items have accumulated, so the time has come to tiite care of these odds and ends.
CONTESTS
The Israel Amateur Radio Club Contest Committee has announced three upcom- ing competitions. The first two are on a national basis— the Spring Contest on Israel Independence Day, May 7, on ISO. 80, and 40 meters only, and a VHF-UHF
test to be held in the summaf. Of interest to readers of this column Is Ihe long- awaited israeNntefnational DX Contest that Is planned for mld-OctOber. When data lie become available, they will be rushed to the interr^tlonal amateur press.
THE JERUSALEM AWARD
The following are the final re- quirements for the coveted Jerusalem Award; Ten different Israeli stations must be worked. Including no less than seven Jerusalam staions^ AJI modes and bands are permlasible, and the contacts must have been made since January t, 1983. No QSI-s are necessary— just a log of the contacts, verified by two other licensed amateurs. This is to be sent along with eight iRCs to the award manager, Dr. Mtit Gordon 4XeAA. PO Boa 4079, Jerusalem. Israel.
The rules foe (he two awards ot the Israel Amateur Radio Club remain un- changed and are to be found In this col- umn In the August* 18B3« Issue of 7B.
Quite a bit of Interest was created here by the flight of the ST5-9 space shuttle with Dr. Owen Garriott W&LFL operating on board. A few diehards assefnbied the antennas specified by AMSAT and kept themselves up-todate on orbit and fre^ quency information. To the t)est of my knowledge, the only contact with the Co^ lumbia in our region was made by otir neighbor, His Majesty King Hussein JV1, In the Royal Palace, an American tele^ vison crew recorded this historic OSO, which lat»r was televised all around the wortd. At the time of this contact, ama- tours In the region who were monitoring W5LFL*3 frequency heard nothing^ point' tng to the fact that this contact was a pr^ airanged sked.
NEW REPEATER FOR TEL AVIV
Tel Aviv has become the recipient of a brand-new* two-meter repeater to replace the old one, long suffering from probients of Intermod and low sensitivity. In a cere- mony in the Motorola Israel offices, Valr 4X4GH. Avner 4K4GE, and David 4X4WA, representing Motorola, presented the re* peater to representatives of the IARC> Since then, Aharon 424 AG has been test- ing and adjusting the machine, and by the lime this Is In print J I should be on the air on R7, 145.775^.175 MHi
Ytir Yc^efi 4X40 H, speaking for Moto- rola, said that his firm views tha amateur public as a technical resource In the field of electronics, and thus Motorola contin- ues to aid the radio arrvateurs of Israel In developing a national repeater network, in reply, I arc presider^t Aharon Kirschner 4X4AT gave recognition to the fact that the entire chain of lAJ^ repeaters has t)een donated by Motorola Israel. Aharon praised Mr. Yosefi, who had done evefy* thing In his ability to aid the lARC. After the speeches were over, glasses were raised to toast 'Ihe repeaters that are on the way," Tbe meeting was coneiudad with a guided togr of the company's labs, conducted by 4X4Q&
MINJSTIIY OF CQMIiUNICATIOI^S M^WS
An ongoing dialogue, once every three months, is tMing held with represeiv- tatlves of the Ministry of Communica- tions, The following Items have been con- cluded up to this date.
&mry planr>ad change In amateur li- censing will be made known to the lARC eKecutive before It la made public knowl- edge. The chart of allotted frequencies and powers will be deliberated upon by a idnt group from the Ministry ar>d the I ARC. The possibility of placing I ARC re-
73 Magazine • June, 1984 75
peaters In Ministry of Comfnunlcatlona sH«9 will be examined.
The procesa of llcenifng vlsltiT>g ama- tfrurs from ebroAd ^& to be a^mj>nried. Ami the phiyslcal size of the amateur Itoen&e te to be reduced from certificate to waMet size.
CB IN tSfUEL?
A commltlse from the Ministry 19^ to be vet up to examine the estebilshment of a Cod^free Hcenae according to the fol- lowing ggideltnes: T?ie licenQa will be granted lo tho^e parsing an exam cover- ing conditions of tt>e llcen&e, voice oper-^ ating procedures, and safety precautions. A single cFystat^Ofit rolled frequenoy In the Z74AH1. region will tie allolled, and both input &mf effeclivcr radiated power witl be limits
Ehud -Ed" ZaQef 4Z4UB has complied a 12'0age booklet dealing with lightning and communicat^ofis syetema. The book, distributed Free of charge to I ARC mem- bers, covers everything you ever wanted to l<now et>out Mghtning, th^ damages It can cause, and how to protect your sta- tion effectively from Ita favagea. Wfra krwws? Maybe Ed can be convinced to put out an English edition!
Not long ago, I received an unexpected but welcome visitor, Major George MlKom N410M, who recently came qv&f to these parts to BBfve with the MultlnalicKiai Forces In the SInal peninsula observing the Israei^-Eoypi peace treaty- George, a reader of this colymn, was on his way bacK to Egypt after picking up his Israeli reciprocal license in Tei Aviv and decided to drop in and ^y hello- There is not yet an Egypt ian^mericsn reciprocal lloenalng aQiaement, so George doesn't know If he'll be able lo get permission to opefate portable SU. If he cfoes, I m sure he'll nave some big plleups to contend with.
In conclusion, I'd Itke lo give you again the present procedure for obtaining a re- ciprocal licefise during your visit to IsraeL You apoear In peraoi^ with your valid ama- teur llcen^ (not a photocopyi at the office of the Ministry ot Communications, on the tenth floor of the Shalom Tower on Ah ad Ha'am Street, downtown T«t Aviv's higtv eet buiidlrig. A reciprocal permn will be Issued on the spot free Ol charge. Office hours are from 9KK} am to 1 :00 pm , Sunday through Thursday, and the phone number h (03^€10278.
^ ITALY
Afar/a Ambrosi I2MQP
?0129 Miiano n&iy
The January Issue of Hedfo Rivtsta (the Hal I an Ijeague magazine) dedicates one page to the awards spoitsomd by 7S with the reproduction of three of the awards^ On the opposite page there is a pTiato of the Italian islands Award, tt's a very nice one and we have been writing ab»out it to call your atteniion to it. CSee the January column.)
In the same maoaiine, ttie oover photo and 10 pages covar usage of the personal computer in the radio shack. Particular at* tentlon is given to the ComnrkKiore S4 that li becoming very popular in Italy (we are waiting (or the first copies of RUNi and to some locally^ulH interfacea.
t^ots of excitement twtween Italian 2-rTWter users for the activity o( W5LFL
76 73 Magazine • June, 1984
during the first days of Decemtwr. Owen GafTfott was heard with very strong sfg- nais on the Sth and the 7th of DecemOei and was worked by a tew ol the 2-meter tilg guns. It was not necessary, in any cose, to havQ anything special to read him; it was enough to turn on a hand-held transceiver, but it was not easy to wofk him due to tfie huge numtref of people calling him.
I1NRF and I5FBP have had conflrma* tton of contacts: more are expected.
NEW FREQUENCIES m flMX
The Half en Ministry of TelecommunloBr tlons has given written confirmation of tlie new frequencies assigned lo ttalian
OO^StOfS.
• 1830-1850 kHz with a maximum output power of 100 W. For the area Of Sicily, the upper limit is 1045.
• lOOea-iaiea kHr. For the moment, only on a secondary priority basis: awaiting the reallocation of tt>e existing services to other frequencies to become prirrary,
• 24^90 -24900 kHz. Same situation as above.
« 1296-1298 MHz with a maximum EAP of SOW.
• 12^^7-1270 Mi4z only for aatelilta aer vice, to be asalgned on a personal basis upoci request.
• 10100-10150 kHz. We will be auths^ rlzed to use only 10 kHz on this band. The Italian ijeague has been requested to in- vwtlgate and report what l^ the best part of these frequencies. The choice will be very eaty as we will onfy fiave to find where the interference is lowest. In fact Radio Moscow I& received at 10115 with 9 + 40 signals and Arabian broadcasting uaes tot 20 with 9 + 20 reports.
MOetLE SERVICE, REPEATERS
The Ministry of Telecommunlcotlons has agreed to authorize the focai oper- ators to work mobile on 144 MHz and up with a maximum power of 10 W; rw clarifi- cation is giv«n as to whether this la Inpcit or out put.
This Is an Important point as it recoo- rtizes the mobile service, and possibly U can be a first ntep to ^t the saine kind of authKirization also on HF.
Tha same day, the authorltiee recog- nized the existence of repeaters on the 2'meter tsand. Rules will be isaued on this matlw in a short time.
60 MEIERS
The BO-meter band Is still a subject of dispute between the League and the Post^ al Admlnislratton, We can now see the possrbltity of findirn) a aotutlOfi to tM abfe to use all the band, but it will take several months to reach the final agreement.
A flr»t step towards It is the acceptance from tfio Administration not to take too »tror>a actions against hams found out of the authorized small portions of frequen- cies. From now on. the "bandits" will re- ceive only a written note of the violation tnstead of having the llcefiae suspended for one month srx3 a fine. All the at}ove Is a Clear indication of a different attitude to^ wards the amateur community, and this Is mainly due to the kind but firm apprxiach taken by tt>e ttatUn League, Let's hope 11 will contimie this way,
PWtST CA RTTY
The first county RTTY award has been given to Joe liAOF from ftom«. He had to contact 1 2,000 US stailofis to be able to reach the 500 different counties, tn ttie meantlmei he has also worked 192 courv tries and Is rkow trying to reach the 200 level; that la quite an adilevement fof a
RTTYer! He Is always lookina for the $ia|«9» to if you hear him, give a calL
^ a' a- w *
Maybe you wilt be fnter^ted to know that In our country you can Install a televi- sion station and broadcast pomo riln%$ alt tlirougit the day ar^d you witi get into no troublee.
check in on Sunday morning so we are abie to pass meeaages. The r\et meets dai- ly at 0700. but net as n^ny of ttte stations are able lo check In on the dally achedute, We don*t miss an antenr\a party It wa can help it*
UBERIA
Brotfwf Dortard Statfes, C.S.C.
EilAUWESHFY
Brothafs of the Hoty Cross
St Patrick Hfgn Schcol
^O Box 1005
Monrovia
Rffput^lic of Ub^fia
Antenna parties! Amateurs here In LUwrf a love to go to antenna pailies^
Saturday nlgtrt I was talking to ofK Of my friends ori two meters. He had speni moat of the day on imbaasy Hill helping to put up a three-band Quahcraft. IHe apol- ogised because i wa& not Invited for the occasion. As a rr^tier of fact. It was less than a year ago that I had helped put up the same antenna at another locatlort Evi- dently, in this Instance, they had a tower on the roof of a muiti-Storlsd building and had found It nacaaaaiy lo build a working piattorm at the base of the tower, tt^ size or the platform 1 1 ml led the number of "e>f- perts" that could be accommodated, I felt left out but urKierstood that it really coutd TyoA t^ helped- As it worked out, the anten- na didn't wofK
it was too late In the day to do anyttring more, so everyone went home arid we spent the evening on two meters advising the group on what they stvDu^d lio the next day. t made the btllliant suggestlort that they make soff^e otimrrteter checks before they take down the whole antenna^
'There is really no reason why the thing sihouidn't work,"
After a ftard night, the group reaasMTv bled the netct day, which was Sunday, and began to run tests. It turned out that the tialun was shorted so they took It out and connected the coax directly to the driven erernent After a few loops wero put into the feediioe at the upper end, ttie awr was ain>oat one to one.
I mentioned above that we had put up the same antenna foe anott>ef amateur less Ihan a year previously. He was a be- ginner and had built his fust kit. a Hot Water one zero or>e. That didn't work either. Just atiout the time we finished troubleshooting the rig and had him on thke air. he was given another aaa^ifvnent and sent to another cour^try. That fa a chronic situation in these pans, at least 90 It seems.
In my experience, amateurs like to help aech other, but over here in Liberia I think that this spirit is "special." TTie reason is, of course, that there are so few of us and the fact that paris and service are scarce. In spite of poor mall service, we manage to rT)ova radios and paris up and down tl^ country as the r>ecessity aiiaes. It may take a couple of weeks or a rr^onth, but pa- tience ia something that one learns very rapidly.
We do have a good repeater and that gives us eoftimunlcatlon w^th amateura wtio have two-meter equipment, but nK>re Imporiantly we have the West African Net which meets every Sunday morning at 0600 Zulu. Most of the counties of Uberia
MALAYStA
Mohammad Saifah 9M6MO IMto A TV htaiaysia Miia t¥i Tttmrmf} Ro^d Koia Kinabatu
Ea$t Maiaysia
UOyi^T KINAMLU EXFEDtnON
We started off from Kota Klnat>atu al about 1500 local lime (0700 LTTC) on January 13. arriving at Klnabalu National Park at 1700. The Katlorta) Park Is about 4d mites (77 km) froin Kota Kir^abalu. Ttiere were ten of us In the group— I was the only amateur-radio operator, Eight of us managed to get beds in the hostel. (One of my friends and I had to aleep in our individual cars.) The park is 5000' (1524 metera) atM»e sea level. Jtm night was quite cold arMi it was raining.
The next day at 0700 we reported at the park headquarters located a few hundred yards from ttie hostel After having coffee at the pafk's canteen^ we staried off tn a hired Yehlcle (sntall truck) to the power station three miles away. From the power station, we started walking up. We had one guide and we did not hire any porter to carry our load. Every one of us carried a haversack, i had to carry a Z-meier mobite transceiver, one IZ-vott^ 12-Amp/hour mo- torcycle battery, and an antenna (Slim iim). The antenna Is a horT>e-brew loO from Practical Wre/e*s. for Apfli, 197S^ F, Q.
When we started, Sylvester » or>e of my friends In the group, decided to help me carry the battery and the 2-metar rig. This was realty apf^eclated because we were to c1iml> about four miles before stopping over for the night at the Panar Laban shelter at 11,000 feet (3.000 maters). All alorvg the way the temperature was com- fortable and cool. We took some pictures; we wefe very tired as we got closer to Panar Laban. I felt a little stwjrt of breath and had a slight headache at the high altitude.
Some of the boys reached Panar Laban at 1230. £>ut myselt and three others arriv- ed at 1500. It was a relief to see Panar Laban!
AftSf getting the bed and the steeping bag reedy. I set up ttie equipm«it (FDK dOOD, 2'meter FW) with the antenna be- tween Two rocks, almost on the ground. I started catling CQ at about 0500 UTC with one Watt of power. FM. Not long after the call I heard V35HG ffo<n Bandar Se^l 3e^ gawan, Brunei; he cams In 5/7. He was running 25 Watts Into a oroundplarte. Brunei Is about 320 km away. And after atwut 20 minutes of the QSO, during a t>reak. I heard anott^er station Itiking to VS5H0.
The ottier station was • bit w«ak wttti a lot of r^ise. Later on, t could Identify that It was Gerald VS5GA, So i asked VS5HG to tetl Gerald that I coutd hear him weakly. Latef on. I uivderstood that Qoraid could tiear me, so I increased power lo 5 Watts. So, with me running 5 Watts and Gerald running 26 Watts^ we managed a long
Coftftnt/^ on peg« 122
Attenti on Moonbouncers
and Satellite Communications Enthusiasts
Introducing New Ultra High Performance Antennas from KLM Electronics, Inc.
KLM Electronics is fueling the Moonbounce and Oscar 10
revDluiion with Antenna Equipmeni that delivers truly Out-of-This- World performance.
For the Moonbouncer, our New 2M-16LBX is designed to be the highest gain 2 meter antenna available on the mar- ket today by more than a full db. making the 2M-16LBX an outstanding performer as a single antenna or in Moon- bounce (EME) arrays.
The New 432-30LBX follows the same pattern as the 2M-I6LBX. and soon will become the industry's standard of comparison,
Featuring straight foi-w^'ard construction, and an innova- tive tapered boom that greatly reduces windload and adds strength and durability. Virtually unbreakable, insulated, 3/16" rod parasitic elements are anchored through the boom to insure years of I rouble-free performance.
For the satellite enthusiasts, the 2M-22C high gain 2 meter, circular polarized antenna, features rhe same rugged construction and total tlexibiliiy as our very popular 2M- 14C with a 2db increase in gain.
Four or more 2M-22Cs make an excellent array for Moonbounce tEMEI by eliminating Faraday fading.
Fiberglass aluminum slacking frames are available as well as 2 and 4 port power dividers and phasing harnesses to optimize the performance of these type arrays.
Watch for our new elevation drive system coming soon.
432-30LBX
BANDWIDTH _ .....,._ , _ 430-440 MHz
i^GAlN , , 17.3 dBd
BEAMWIDTH . . . , (E) 19\ (H) 20°
FEED IMP .«.....,.««.,«. ^ 4 *«<«..*..« ^ ^ 50 ohms unbaK
BALUN ..,-....._ ...-..-.*„..*.-....,. . « . . . included
TURNING RADrUS , „ , 12 ft. 4 in.
WT. (lbs.) , , , , ,,.,..,...........-,,-,. 9 lbs.
2M-22C
*GA1N ,.,,.,,,,. , ,,.,., 13 dBdc
E3£^/\ d V i \w J L^ M AX ■^^■••■■■•^■■■■■■-■■■■■■'■■•■■■■■■■■ai *«■■«■■*« I d'M «! ^ f \ Wm f J ^
FEED IMP .50 ohms unbal.
BALUN (2) 4:t coaxial
BOOM LENGTH 19 ft. i in. (tapered)
VSV^R 1 ^l
WINDLOAD , .*...,.**♦*,♦.,♦., 1.85 sq. ft* max.
CTRCULARITY SWITCHER „ CS-3 included
2M-16LBX
BANDWIDTH , 144- 146 MHz
♦GAIN .., .-.,,.-...,, , (144 MHe) 14.5 dBd
BEAMWIDTH .,..,... (E) 26", (H) 29°
FEED IMP , . , . 50 ohms unbaL
BALUN . , ...,,, . 4:1 coaxial, 2 KWPEP
BOOM LENGTH ...*,, 28 ft, I in. (tapered)
VSW R ....._. 1.5:1
WINDLOAD (H) 1.75 sq. ft. (V) 2.44 sq. ft. max.
WT, (lbs.) ..,,..... , . . 10 lbs,
TURNING RADIUS ,,.,*. + .,.... ....,«,».»,, 15ft. 5 in.
See the complete line of KLM antennas attd equipment at your local dealer, or write for our catalog.
*To provide a more accurate and con&lstanj gain figure, pefformance oMhis KLM ant€!nf>a ha& be«n caf^fully measiired and carrel aled in accordance wi^th Nationat Burejiy of Standards Note #6@6^ This gain figure msy appear somewhat conservative wt^n compared Mittiolhers commortly round in co-nventional induslry literalyre andi base<3 on otder. i^ss exacting ratiTig methods.
nam
electronics^ Inc.
P.O. Box 816
Morgan Hill, CA 95037
73 Magazine • June, 1984 77
Imms 8. lohnston K6APW 102^ Peraka Avenue Atbany CA 94708
Try Quality Code
Using this Mod III update is much simpler than saying its title trenty times.
You TRS-80 Model 111 us- ers who didn't "patch" the fine keyboard program written by Louis Graue KBTT [73, July, 1982) have possibly missed a nice sta- tion addition. I did not like the messy screen that the original patch-up left me, so this insert was written. Lou has graciousfy tested this and a previous version and reports this one runs fine on his Model I also.
The two models have partially different ROMs and the calls used to de* code the miscellaneous keys read in 3840H memory location give invalid data for the Model IIL This sub-
stitution instead continues the software decode.
To keep the video in sync
with the sending program, unshifted arrows other than backspace are ignored At- tempts to use expanded video by loading 07H in line 3570 (right arrow) gave dif- ferent, though equally fa- tal, problems for both mod- els. The 10H in the [isting, when shifted, will give an "extra" space bar. Sending "deaf directly to video memory bypasses a ROM routine that actually clears tiie screen, I retained It as is since it is not destructive.
If your editor doesn't re- number on line collision, use a smaller step for your inser-
tion and renumber from the top when finished, The pro- cedure—delete lines 3260 through 3550 and insert the listing shown here.
If you have included the comment lines, the renum- bering will give an easy- to-read two-hundred off- set to SCHR and following tines. Lou and I both expe- rienced symbol table over- flow when assembling— not enough memory. After sav- ing the source file, eliminate as many comments or conrv ment lines as necessary to free memory.
New Information
Lou passed along from John Meade W2XS support
of BT, Change lowing I |
AA, AR, and SK, the data in the fel- ines; |
|
Line |
Character |
Key |
2450 2580 2590 2610 1 |
BT - 0D1H AA = 0E5H AR = OCAH SK^ 85H |
1 m ; ' 1 |
I key my solid-state trans- ceiver directly with one 2N2222 driven through a 2.2k-Ohm base resistor by substituting a two (02 H) for the zero in lines 220, 1290, 1590.1770. and 1960 of the original listing. This change gives a true zero out instead of 0.4 volts.
Good luck and I hope to hear some Model Ml key- boards soon. ■
Program Usting, Delete lines 3260 through 3550:
Insert;
3260 3270
3280 3290 3300 3310
3320 3330 3340 3350 3360 3370 3380 3390 3400 3410 3420 3430 3440 3450 3460 3470
;KEYSCN insert ;73 MAGAZINE J ;TRS-80 MOD I a
JR
SUB
JR
ADD
CP
JR
XOR SHBIT RRC
JR
RRC
JR SHIFT XOR
JR COHPLTT CP
JR
CP
JR
JR
for K8TT CW KEYBOARD of
uly 1982
nd III - K6APW March 1983
CSCHR ;0 through Z (no shift) 70H ;niimfaers?
NCCOMPUT igo if not numbers A,40H
;0 through 9 ;;*
3CH
CtSHBIT
10H
B
C, SHIFT
B
NCSCHR
10H
SCHR
07H
Z, SPACE
05H
Z,LF
NCRT
;make -./
;left (both HOD I)
; right
;make uppers
3480 3490 3500 3510 3520 3530 3540 3550 3560 3570 3580 3590 3600 3610 3620 3630 3640 3650 3660 3670 3680 3690 3700 3710 3720 3730 3740 3750
LF
RT
UP
DN ARROW
SH
CLR
BK
SPACE
CP
JR
JR
CP
JR
JR
JR
LO
JR
LD
JR
LD
JR
LD
RRC
JR
RRC
JR
LD
JR
ADO
JR
LD
JR
LD
JR
LO
03H
Z,UP
HCM
01H
Z,CLR
NCtBK
SCHR
A,08H
SCHR
A,10H
ARROM
A,0BH
ARROW
A,0AH
B
C.SH
C,SH
A,0
SCHR
AJ0H
SCHR
AJFH
SCHR
A,01H
SCHR
A,20H
;no ENTER, already NUL
;go, shifted or not ;not 09, see text
;not 5BH
;keep video sync ; shift them
7S 73Magazfne • June, 1934
DIRECTION FINDING?
# Doppler Direction Finding
it Ho Receiver Mods
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Assembled Units
• 135-165 MHz Standard Range
• Circular LEO Display
it Optional Digital Display
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• 12 VDC Operation it 90 Day Warranty
New Tectinolo^iy (patent pending) converts any VHF FM receiver into an advanced Doppler Direcljon Finder, Simply plug into receiver's antenna and external speaker jacks- Use any four omnidirectional antennas. Low notse, high sensitivity for weak signal detection. Kits from S270. Assembled units and antennas also available Call or write for lull details and prices.
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hr 8/79
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Harmonic Distortion: Less than 12% a! 1 kH^ with 10 dB dipping Requires 12 Vdc at 200 mA
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H-454
1984-85 CATALOG 50e
RADIOC^
Boi 411S. Granville. NH 03im (£03} 87a^1033
CALL LONG DISTANCE ON YOUR HANDHELD
The Model 335A will deliver 36 watts of power usmg the Eatest state-of-the-arl cir- cuitry. The amplifier will operate SSS or FM and is compatible with most handheld trans- ceivers, inc[uding the TR2400. TR2500. )C-2AT. Yaesu, Santec* and Ten- Tec. Only 300 mw input will deliver S watts out; 3 watts in will deliver 35 watts out. Maximum input drive level Is 5 watts.
Our products are backed by prompt fac- tory service and technical assistance. To become familiar with our other fine pro- ducts in the amateur radio market, call or wnte lor our free product and small parts catalog.
Modet 335A
Kit $69.95
Wired & Tested $89.95
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Mijder 2MCV ' TrofFTtjorte— ' -omfi^rectionalcDninifreEr ^kjin uortical fof 2 m«iar5 tiavHig ihe sarrie g^m as dciubkJ-HA TytJBS. but itio pateritecl Trombona" phasing Sj^cxion alk>w« the radtacor to remain unbroken t>v ivvSivritstor^ for mAHirrkum strnfrigTh «n hign w^^s Na cafe 'tAMttxf* dehghf ~ cortStnjoiOi-i srvj Kf|L££idbl^ (fMtirnia maflch lor compltfrD^ O C grcnitrHiing and ruwesi possibto SWR Hsight 9 S n/2.98 nTetera
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BUTTERNUT
ELECTRa^flCS
405 E. Market St. Lock ha rt, TX 78644
'n Magazine • June, 1984 79
Hm HELP
tVf are happ^ ta prDVJds Ham Help fist- ifiQB trea, oft a $pBce-avaif»tie basis Wa ara nut happy when wa havs to take tima from ath^f duUa^ io decfphar cryfitfc natas scf9wta(t iilagihif oft doq-earad poaicards and odd-siia^ Bcraps of papm. Plaata typa oe pfint your rvQU^sf (ne^ityf^ dotibfa spaced, on an B*ji"xt1" sheet of paper amf use upper- and towercase tet- tma wh&a appropriate. Atso. ptease ma^# « "1" too* iike a n^ nor an %'' which coy Hi fte an "©/" of art "'aye.'* and so on. Hardens it rrtay be to betrave, we are not fa- mUfar with avery pf^9 of equipfnent moth ufactured on Earth tor the iast 50 yeanf 7limit($ for four cooperattoti.
HwQd acheitiatic diagram tor the Spec- Ironlcs DD^1 digital frequency dispfay which I'm usiirg with a Yaeau FT-101E- WIK maJce copy and fetum. Ptesse senci nx.
Jaefc Duncan KtCNM
RFD 3, CmtvlaMr Drtv*
Denlaon lA 51442
Helpf I now own a woffcif>g N0 109 gefieral-covftra^ receiver. I need mfofma- liori abour Jt so Itiat when it no longer works, I can find out why. (Also, I may want to pefforrn modi flea tlona to It.}
Afao, I have been hafVlrM3 & terrlbte time tryig to connect a Western Electric fl103SC3A-type to<ichlone^ pad to a SOO^type telephone set. Any help at all will be greatly appreciated,
AfKlr«w W. Gaunt
62% Wathtnglon Str»«|
NeWburypDrt MA 01»S0
Does anyone nave a way lo convert a Ti 99/4a computer Into a code keyboanf?
& F. Knoll KASTIO
707 H. Wttner
JacfcadA HI 48202
I fieed an opefating/iiefvlce manual (or a Javelin model 3100 (North AmefJcan Video Corp.) cloaed-circuft TV camera.
Urry Slaefe KtUKO
5DQ0 Chlckw«*d Or. Oolondo Spi^noa CO »0317
I noed any Inlormatlqn, manuals, oi 9Chematlc& for the AnaJ^b Type 11 00 0$<:iilO^ope wljh Type M 16 plu@4n,
W. A, {Waft) E4dy K5QDD 111 N. Maddux
Duma* TX 79029
I am deepefately looking (or a few of the miniature CB w^lkie-talKies made tiy Data Magnetics Corporation caiFad the Pocket Com. They were two^hannel lOOmW units, model number XB^IQO.
I am also Inlef^ted in old CB eqij^lp- ment of all types and cocidltJor^^ Please send info ajuj prices.
D«niila n. Staita
Bdx dS
Cfo* Timlier* UO ft5A34
Please, wtiere can I find a manual lof a solid-state OS-BG acope?
Riita Lfiison KIMOU
124 a Grand Sfravt
W. Suff ieki CT 060913
(20a>€e6-2ft71
CORRECTIONS
Tr>e address for Ham hAasterTapes, as tt appeared In the May "Review" section, was incorrect- Tha new address is 13S East 31st Street, New Yofk NY 10016.
JlmGiay W1XU 73StaH
I am iDoklriQ for schematics and/or op- erator's manuals for the Regency Morv itoradlo 4-band receiver (model WT4) and the Johnsor^ Viking Adventurer transmit- ter (no model no.), i also need crystals For the xmUler for any of tho Novice band$, I wiil pay reaaonablecosts-
Cafl Amdt
BokZIS Andale KS €7001
I need the schematic (oniy^ for a Gon^et model G-77 mobile transmitter A)$o, 1 need a schematic (and possibly manual) lor a Calico (CaUfomla tnairumer\ts Ck^.) model 8000 digital voltmeter, i will pay rea- sonable copying coats a.nd poaiage^ Thank you.
W. Ricftmond ¥«34CPO
521 flawHngs St.
LeuJflViile KY 40217
A circutt diagram Is needed for a vin- tage racetver {about 1d4£9 built by ttte Mack ay C^. for maritime communica- tions, with regenerative control, Model 128 AX. It covers .16 kKi to 340 kHi In four bAnd9. Any help will be appreciated.
Ken Hunt WB70VU
&&19 Valhalla
Klamath Falta OR 87601
Mfeed schematic diagram and manuals for (1) Lafayette Model HAhSOOA solid- state S-band receiver, and (2) Kan Ironies Model 80-406 dkect-con vers ion CW re^ ceiver. Will pay copyinfj costs and posta^
M. K. dlafften WItCJF
12S Mornings I da Dhve East
Briitdl CT 06010
1 need a schentalic/servlce manual tor a Kris Mech 3-B, amateur trands, 10 and 6 meter, linear amp, serial #112608. t will gladly pay for Information!
William 0. SRll#nger
Rl. 2, B<ix 524
Wlmisor NC 27983
I'd like to hear from anyone who has succesaruliy interfaced a Model 33 Tele^ type machine to a Vic-20. 1 want to use tt>e Modei 33 as a printer fof a Vic/AtR-l system.
eeb Howie WA4ZtD
Rl. 1, Su 510
Union MS 3d36S
PR€CI5IOn PROC€5SinG
Provides tot^l dynamk range control with very tow dlstorlten
• $«l«i: Libit ^«iK«Alnf moit«% -
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• tdhy In lntl#tl Afld uiw with .iny
InlroduciorY pH<e— Si 8*>.*>5 ppd.
frtT hrticlttirv with ciiiffi|iti!lr tii».h>iLjl %|H!^in^,iriMn<» fcifilj^l;
ANALOG TECHNOLOGY ,„„
P O Box SSi4 • ton Collins CO BOSZS
GO MOBILE WITH YOUR H.T.!
Model l--lcom ICZArt*. Etc Model K-1 for Tf^-2500 —tildes on bottoftt et radio
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Mwkit K^TR'3400:
» powered thni battery plug
Model N_fT.20SR
Modal T— Simple mod foi Tempo
zroi
NOW FOR FT.20aR ft TH-2SO0
Model Y-FT 207fl. —fits into battery compartment * A unique battery eliminalof ^ HANDITEK R^ublor vHows coristant he natw id opera lion from auto DC of Erase lupply with no ntcad drain and WITHOUT RADIO MOOIFICA- TIOI4! $24.aS P^O in USA. CA add $1.50 Sabs Tax* ^460
HANDiTEK P.O. BOX 2m5, LA PU£NT£, CA 81748
i v^ili be on a student bicycle tour In the Cape Cod, Massachusetts, area in the month of August. \ plan to operate two meters FM on the trip Frofn the following areas: Truro, Orleans. Nantucket^ Martha's Vineyard, and Plymouth and would like to hear from hams In these aieAa lo find out what tne £)est rarvge re- peaters are. Any info will i^ie appreciated and acknowledged.
Jet! Qomstein KD2eE
35 Grien HiU Road
SftrfngneVd fU oro61
1 tiave t>eeri inteiested ih tiammlng ^or some time, but until now have never taken the appropriate time to really look into wh&t li necessary to get started. I am a mitskjnary with ttie Salvation Aimy, aeiV' Ing In Buenos Aires, Argentina^ I have Spoken with my father in St. Louis a num- ber of times with the aid of a licensed op- erator hero,
1 would like to know how to get start <id and what ec^uiprrtent Is necessary. I vmIII not be able to use a rig here In Argent ina^ as t only have 1 Vt years yet here, then wIM be coming back to the States. Arvd here, to be able to u&e a ham outfits you have to have a complete, thorough police clear- ance (tpecause of the trouble in the past with undercover groups ysing the radio against the government}. But perhaps I can study and get in contact with a li- censed operator here wtio is from itm States.
Can you put me In touch with someone who can help me? Any help that you can gtve or suggest will be greatly ap- preciated.
Thank you again for your help.
Capltan Richard D. Fofney
E|«frtto d* Sahraclon
Socursal 3, Casilla 184
1403 Buanos Aires
Argentina
Need the sctiematic and crystal multl- pli<;at(ofi factor fof the KAAR FM TT^QO transceiver {450 MHzJl
Need schematic and info on adding FM capability to the R-482/URB-3S receiver {22&40QMHZI.
Haroy D, Dorai^an WBBSKV
4890 PtKienIx Avenue
Fair Oaks CA 96^28
Recently I met a young lady wf>o is tra^ efing to Southern Yemen this summer to be a missionary for two years, i offered to try to set up a schedule with a ham oper« alor in Yemen. Weil, I'm sure you already know my problem— the moat recent infor- mation I have does not list South Yemen as allowing thind-|}arty traffic or reciprocal operating ticenses. Do you imow U the US Embassy there operates a ham or MARS station (I'm in the military), and If so, what would be the best wmy to set up a schedule so thiat she could send traffic tMCh trome? I>o you tiave any other Ideas on tiow we could *ork around liie third- party traffic regulations? She will tse work- Lng at a hospital In an American com- pound only a few bours from the tJS Bm- baasy.
You can t» of tremendous t>etp slnt^ I have never before attempted to set up a sched^ule with a OX station and am run- ning into a iot of probtefns tnat I don't know tiow to work around.
David Patton WA4TQB/I
3410 El Mon^ Road
Colorado Springs CO 80910
Wanted! Atwatef Kent sp6»iftw,
Q. R. Qalbralth K5TVC
4303 Klngsway Ddvt
Farmlngton NM S7401
80 73 Magazine • June, 1984
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SOCWL EVENTS
UsUngs in this coiumn am provided tree of Gtiargo^ on a spaca-avaifabiB basis. The toi- 9owfng infofmaiion &f}£kutd ba irtcfud&d in mmf annonncamant: sponsor, aveni data, time, place, City, smte, admission t^arge (if any}, taatures, tatk-in fr^uencias. and the name of whom to contact tor fuith^ informa- tion. Anrtouncemeftts must fee mc^rved by 7S H&gaiina by tne first of the montn. two months pftor to ttw month in which tfre event tai(aa piaoe. Mait to Editorial Office, 73 Mag- 92lna, Pine St., Petarborooffh NH 03458.
&l-ACK58Uf^<i VA MAY 31*JUN 2
Virginia Polytachnic Institute and St^te Univorsity wid ho^d a new workBhop. Per- sonal Compute and STD Compute^ tnter- facing fof Scj«f^ti(lc Instrument AutOfrta- tion, on May 31 -June 2. 1984. at VkQlnia Tech. Blacks buro VA, The wark^Kqp i$ f39S.0a fof Xt\e three <leys and will be dk rected by Mr, David E- Larsen. Or. Paul E. Field, Or. Jonathan A, Titus, and Df. ChrtSr topher Titus, Each parties I pant will wire and test Interfaces, For more Information, wrila Dr. Unda Laftel, CEG. Virginia Tech, BlackStturg VA 24061, or pt¥3rm (7Q3j^9ai- 4940.
SEASIDE OR
The 1964 Oregon Slate/ARRL NortN- we^tam DLvtslon Convention will be heJd on June 1-3, 1664, at the Seaside Convention Center, Seaside OR A single convarttion registration ^s ^,(X3 in 3<fvanc« and S7.00 at the doon a couple convention regiairation Is S7.00 In advance and £9.00 at the door; a leer convention regi si ration Is 12.00 {chil- cfrwi under 12 wilt be admrtted free^. Fle^ mwlcet tables are $S.(X) eac^t per day or S8.00 each for two days. Hours on Friday are 5:00 pm to 9:00 pm; on Saturday, 8:00 am lo 9e30 pm; mnd on Sunday, 9:00 am to ZOO pm. Snack bar food will be avajjat^e. In additkKi to the Ilea market, features will in- clude exhibits, seminars, forums, ladies' and chiltiren's activities, an ARRL breaks fast, anef a Salurday-ewaning bar>quei with guttti SpMker Roy Meal KSDUE, Science Editor of NeC Hews. Taik^n on 14S,45 (-600) and 146.52 simplex. For advance tickets for the banquet IS13.50 each| and raglst ration, send « dtwdk payable lo Ore- gon State Ham Convention to Oregon State/AHRt Northwest em Dtviaign Conven- tion, PC Box 920, Seaside OH 97136. Fof additional infCHmation, call H5O3>640- 5*Se, Th^03V73S^&161, or 1'(503>644^J752
QUELPHONTCAN 4UH2
The GueJph Amateur Radio Ctub (VE3ZM) w^ll hold the lOth annual Centrat Ontario Amateur Radio Flea Market and Computer^ feat on Saturday. June 2. 1964, ffom 6:00 am to «00 pm, at Regal Hall, 340 Woodtawn Road WB«t. Giieiph OKT. GenefaJ attms- aion Is $2.00 and children 12 years and un- der will be admitted tree. Vendors' admis- sion Is $5,00 per 8-foot apaca. Doors will be open to ^widors only from 6:00 am and a quantity oi 3' x 8' tabtes will be avajlaMe for rental for $5.00 each. Features will include commercial displays, surplus dealers, com- puter software ar*d hardware, indoor ar«d outdoor dispiays, and a refreshment con* OMSJon, Talk-^n on l47J60n47.360 (VE32MG} and .52/.5a simplest. For further
information, contact Susan Barabus VE3BEC or Joe Barabas VE3BXN at (519^ 624-1404 (Guelp^K ^^ph Bart left VE3BJX at |5l9>S3&20g7 (Gueiph), Keni^ GnriatFaJ> sen VE3BYU at 1519^7434082 (Kitchenet^ Fred Hammond VE3HC at (519^^2-8323 (Ouelph), or the Guelph Amateur Radto Dub. PO 8o)E 1306. GueJph ONT N1H eN9. Canada.
ST, PAUL MN JUM2
The North Ai^a Rapaater Association wilt sponsor a swapfest and OMposdion for amateur-radio operators on Saturday, June 2, 1984, In the Dairy Products Building at the Minnesota State Fairgrounds. St. PauL Admission is $4.00 and childnen under 12 accompanied by an aduft will be aidmitted free. The hours are 6:00 am to 5:00 pm: ac- tivities will tiegin outside at 6:00 am and In- side at B^QO am. TT^ere will be tree ovemighl parking for self-contained campers on June 1sl. Features will inclu^ exfiitHts^ tooths, club actlviiies. demonstrations, and a Qiant outdoor flea market. Talk in on ^JJ&5 ar>d .1&I.76, For more inf Donation, write Ama- teur Fair, PO Bqk 357, Hopkins MN 65343. or oalt j@T2HSO^O0O.
STEVENS POIMT Wt JUN3
The Central Wisconsin Radio Amateiifs, Ltd., will hojd its annual swapfest and fami- ly picnic on Sunday, Jur»e 3, 1984, from 9:00 am to 4:00 pm. at Bukolt ParK Stevens Point Wl. Adult admrssioo Is S2.00. Selling spaces are SZSO per table or (altgate. and indoor selling areas will be available. There will be food, refreshments, arid picnic tables. Talk4n on 146.07/67 and ,^.62. For furlfier [nfofmation, contact Fraitk Gut** W9BCC, !632 Eli Is Street, Stevens Point Wl 54481, or phofie {414^4-2566, or contact Jim B^iak KA9ACE„ 1775 Strongs Avenue. Ste^tfens Po^nt Wl 54461, Of pnone (4UK344^943.
MANASSAS VA JLJN3
The Ole Virginia Hams APC. Inc., will hold the tenth annual Manassas Hamfeat on Sunday, Junes, 1984, beginning at 8:00 am, at Prince William County Fair- grounds, VA Route 234. Vt mile SOuCf) Of Manassas VA. Admission is $4,00 per per- son (children under 12 will be a<imitted free} and there will be no advance sales. Activities will include 25 acres of taligat- ing (setups at 7r00am), Indoor commerci at exhibits, breakfast arKJ lunch menus, a YL program, and CW proficiency awards. Talk-In on 146.37A97 WA4FPM (Manassas repeater} and 146.52 simplO)ic. For more In- formation, write Hamfest, c/o Ole Virginia Hams ARC, lnc„ Manassas VA 221 10^ or phone (703)^31-0468.
CHELSEA Ml JUHZ
The Chelsea Swap and Shop will l3e heldgi^Mnday, June 3, 1964, from 8:00 am to 2:00 pm, at the Chelsea Fair- grounds, Chelsea ML Tba donation Is $2.50 In advance and $3.00 at the gate. Children under 12 and non-ham spouses wllf be admitted free^ Table space is S7.Q0 per 6 feet (tadies' tables welcome) arid tnjnk sales are 52.00 per sp«oer 0«lM wf 11 open for sellars at 5:00 am. There wilt ba
plenty of parking, (ncludlng special park- ing for the handicapped. Talk-In on 146^2 simplex and the 147.855 Cheisea rep«atsr. For moff^ Inlormatton. write William Aften* berndt WBenSN* 3132 Tlmbertine, Jack- son Ml 49201. or phone (5 17^764-5765,
PlTTSeunQH PA JIJN3
The 30th annual Breeze Shooters Ham- test will be held on Sunday. June 3, 19S4, fnam 9:00 am to 4:00 pm. at the White Swan Amusement Park, PA Rte. 60 (Park* way Westy, near the Greater Pittsburgh In- ter national Airport. Registration is 12.00 or 3 for S5.00. Sheltered tables tor ver>dors ire available by aijhrance r^ is t ration only- Ad miss ion and riea-market spaces are free. There wilt tie food available and ac- tivHIes will Include the family amusement park. Talk-In on .2BiM& and 29 MH^ For further Infomiation. please write Don Myslewski K3CHD, 359 McMahon Road, Northt Huntingdon PA 15642, or phone (4l2>a63-0570.
ROME NY
JUN3
The Rome Radio Club. Inc., will present the 32nd acfltion of its Rome Ham Famiiy Day on Sunday, June 3, 1984, at tock s Grove, Rome NY. AotWllFes will Include games, contests, educational and scien- tific displays and presentations, and a iarge ftea ma/kei. Good food and bever- ages will be available throughout the day, which will be climaxed by a dinner and ttie Ham-of-t he-Year award.
KIKGSTOH PA JUM3
The Murgas ARC (K3YTL) will ajxinaor 1he annual Wilkes-Barre IHamfesi on Sun- day, June 3, 1984, tieglnning at 8:00 am, rajn or shine, at the 109th Armory, Marke! Street, Kingston (across the river from Wilkes-Barre). Admission Is £3.00; chil- dren under 16 and XYLa will t>e admitted free. There will be ^rKJoor arKi outdoor laif- gating at $2.00 per space. Setups only will be at 6:00 am and tables and commerctat power will be available. Talk-in on 146.01/Jl and .52 simplex. For further in^ formftllon, write Hamfest t^ommittee. PO Box 1094. Wilkes Barre PA 16703,
SOIXTHINQTON CT iUN3
The Southfngton Amateur Radio A^so^ elation will hold a ftea market on Sunday, June 3, 1964, at the Central Elementary Sct^ool. Main Street | Route 10), lust out- side Southlngton Center. Take exit 32 from 1-64 to Route 10 south for 1.4 miles. The school Is on the right, across from the Public Library. Admission is $1.00. Tables are STjOO each in advance and $8.00 each at the door (no tatigatingli two people will be admitted with each table purchased. There will be over 30 tables of new and used ham equipmenL and hot coffee and refrestiments wiH be available. Talk-in on 146J8f.86 and 145.550 simplex. For a ta- bie reservation, send an SASE and check {payable) to SARA, PO Box 284, Southing- ton CT 06489.
PRINCETON fL jyN3
The Starved Rock Radio Club (W9Mt<S) will present its annual hamfest on June 3^ 1964, at the Sursay Ckwnty Fairgrounds In Princeton 11- Beglstrailon la 12.50 li^ ad- vance (before May 20) and S3 00 at 1 he gate. There will be a nominal fee for recreationai vehicles. Features will include a free swap arva, commercial vendor esdiltrits, an ARRL seminar, and plenty of parking. Good food
will be available. Registrants will receive fiea coffee and doughnuts at 8:00 am. Talk- in on 147.12/.72, 1 46-07/ j67, and 146.52 sinv plex. For advance registration or more Ir^ formation, send a lai^ SASE to SRRCW9MKS, RFD #1, Box 171. Oglesby IL 61348, or prtone (Sl5f667-4614.
TERRE HAUTE IH JtlNS
The 38th annual Wabash Valley Amateur Radio Hamfest will be held on June 3, 19B4, at the Vigo County FairgrourKto on U&41| t4 mile south of ^-70. Registration is $2.00 each or 3 for $5.00 in advance and $3.00 each at the gate (children under 12 will be admitted free)L A coverod 12' x 12' flea- market space is S3.00; outdoor ftea^markef space Is free. Some ic and tables wllf tie available on a flrst<;ome basis. There will be computer and packet-rad«o forums, food and refreshmenis. and ovemif^t camping. A giant shopping mall is located nearby. For tickets end detailed infornnatlon, send an SASE to WVARA Hamfeat. PO Box 81, Terfe Haute IN 47608,
DALTON MA
JUN3
The Noirihern Befkshire Amateur Radio Dub Willi hold a flea madtet on Sunday, June 3t 1964, a I the DaHon American Legion, Royte 9, DaLton MA (near Plttslleldji. Admission is $1.00 and a few tables witi be availaMe at no charge on a r^rst-cof ne. fir^t- serve basis. A breakfast and iunch bar witl t>e provided by the Dalton American Legion, and free overnight camping wlit be penn^t' ted on a f lrat<ome. first-servo basis. Talk-In on 146S1 (ML Greylook).
HUMBOLDT TM
JUN 3
Ihs HumiDoldt Amateur Radio Qub will liofd its annual hamfest on Sunday. Jurw 3, 1984, at Bailey Park. Humtwidt TN. Admis- sion is $2.00. There wilt tie a flea market, ladles' activities, lunches^ refreshments, and flV parking, Talk-In on I46J37/.97. For more information, contact Ed Holmes W4IGW, 501 N. iath Avenue, Humboldt TN 38343.
eOWUNG GREEN KY JUN 9
TTie Kentucky C:k>lonel Amateur Radio Oub will hold Its 2rKl annual hamfesi on June 9, 1964, from 8.-00 am to 3:00 pm, at the JG Pavilion at ttie Southern Kentucky Fairgrounds, Bowling Green KY. Tickets are S2.00 in advance and $3.00 at the door. Features will include an inside ar^ ovf* Side flea market, inside displays of new equipment, tood, free coffee, and free parking. Talk-in on 146.25/.85 and 146.52 simplex. Fof further Information, write £d Gann N4HID, Box 92, Route 19, Bowling Green KY 42101, or call {5CE2>«43-8911.
COEUR D'ALENE ID iUN9
The Kootenai Amateur Radio Society will sponsor Hamfest '64 on June 9, 1984» from 8:00 am to 4:00 pm, at the fslorth Ida- ho Fairgrounds, Co^ur D'Alene fO. Swap tat>les will tie available at no charge; RVi are welcome but no hookups will be avail- able on site. The annual Friday program will Include a pot luck supper and dancing afterwards. For further information, write Avon Anderson WBTWBZ^ N. t035 Higti^ land Court, Post Falls ID 83654,
WILLOW SPRINGS IL JUM10
The Six Metet Club of Chicago, Inc., will
73 Magazine • June, 19S4 83
hold Its 27ih annual tiamfest on Syndft/t June ID, 1364, at San(« Fe ParH, 91 st and Wo^f Road. Willow Spdngs 1L (soutHwest ol downtown ChtcaQoj, Reg i si ration is S2.00 Jn advance and (3.00 at the 9a te. Gales will open «t 6;00 am and features will irvctude a large awappera' row, dis- plays in the |»avilion, ar> AFMARS meet- ing^ p^nic grounds, refreahments, and plenty of paiiclng space. Tafk4n on 146^52 (K90KAJ and jr/,97 (KSONA^Tfl, Fw ad- vanc« tickets, contact Val Hell wig K9ZWV, 3420 Soum 60iri Court. CJcefO IL
NEWINGTON CT JUM 10
Ttie 1Se4 NaHringtCM Amateur Radio l^jHgue Flea Martttft will be neid on Sunday, Jtine 10, 19S4, from 9:00 am to 4:00 pm, at Newington High School , 606 Wlllard Ave- nue (Rte. 173). Admtsslon is $2.00 at the Cioor, taunting (weatfi«f pefmiitFng) is SS.OO, and tables are $10^00^ DqaIh^ may set up at atn am. A pcMion of ttie proceeds will tJe usad for the NARL Scholarship Furvd, Features will Include abundant amate^jr radio and cofnputer ©ea/, free tours of W1AW WK) the AfVU. Mus«um (from lOlOO am to 2j00 pm|, aM TVRQ, packet^adto, and ATV demonstrations. Talk-in on 146.52, 144.85/145.45. Of 223,24j224^ MHz. For mone InfOfmattoi^, contact Tom Namnoum KM10, 55 Spruce Sire^. Newington CT OBIll, or pho^e ^03)«66r16lS.
LEWJSBURG PA JUN10
The Millon Amateuf Radio Oub win hc^d ttteir 13th annual hamfest on Sunday, Juno 10. 1984, from 6.^ am to 5:00 pm. rain or shine, at the WIrttield Fire Ckvnpany grourKls on Route 1S^ south of Lewisburg PA and fi miles 30tjth of exit 30 on 1-80. Covared spaces are avaitahle. RegtstratJon is £3,00 and wJve^ and children will tie ad^ mitted free, Theti will be a flea market, an auction, and contests, TalK4n on 146;37/.f7 and 145.025/625. For firfihef details, wnte Jerry Williamson WA3SXQ, 10 Old Fami Lane, Millon PA 17847, or phone {717}- 742^3027-
BELLEFOMTAJNEOH JUN to
Hamtoree 'B4 will be held on Sunday, June 10, 1964. beginning at SaOO am. at Ihe Log4fi County Fairgrounc^, E. Lake Street. Bellefontaino OH, Ticket donations are S2.00 In advance and S2,S0 at the door; tables are $3.00 (no trunk sales). There witi be food and plenty oi tree parking at the fafrgrounda Talk-4n on 147 MfjQQ and 14652. For lickot tnformatton^ write Slew KIddef N8ET0. Box 265. Russell* Point OH 43346. or call 1^313)^43^099.
DEAL m
JUN 10
Tfie Jersey Shoee Chaverlm will spOh* SOr the third annual Kam S Computer Feat on June 10. 1964. from 9i)0 am lo 4:00 pm. at tfie Jewish Commynlty Center. 100 Grant Avenue, Deal NJ (le^s than 50 mllu from NYC and 70 miles from Phhtadelphla). Admission is S3u00 per persoti and chll' dren under twelve and XYLs will be admit* ted free. Indoor tables aie $6.00 and tall- gating spaces are 13.50 each. For re- served spaces, sand an SASE and pay- ment by Jurw isl to Jersey Shore Ham- fast, PO Box 192, West Long Branch 1^ 07764. Tatk4n on T47iH5 ^ 6. 145.1 10 - .6, and 146.52 simplex ^ For n^ra informailon, call Arnold W2GD3 at (201)^222-3009.
84 73 Magazine • June, 1984
DAYTON OH
JUN 1&-t7
The ninth annual MACC Computeftest will be field on Jyne 15-17, 1064. at tfie Dayton Convention Center. Tickets are $5.00 until May 31st and $6.00 thereaftef. Features will include commercial eKhibita. a cQinpyter and electronica (lea market, seminars and mJnKOurses. a compirter film program, a iios|>iiality $utt^, and cofi- tests. For mora information, write Com- puteriest 84, PO Box 24505, Dayton OH 45424.
CORTLAND NY JUN 16
The 2nd annual SARG Hamfest and Flea Market will be hetd on Saturday, Juno 16, 1964, from 6:00 am to 5:00 pm. rain or *hine. at the Corltand County Fair- grounds, Cortland NV {Exit 12 off 1-61, mid- way between Syracuse and Bingham ton). The donation is S2.00 and |r. ops under 12 ind XYl-a will be admitted free. Indoor ta- bles and spaces are $3.00 each and undef- covef (pole-barn) spaces are $2.00 each. There will be indoor and outdoor flea markets, acres of free parking, and re- freshments, Talk-In on .52 simplex^ For ta- ble and ^p^ce reservations, send a ef^eck to Elmer Fuller, Treasuraf, 129 Ohatsea Twins, Cortland NV 13045. For more de- tails, contact Bud Jackson K2Z£a Sky- line Amateur Radio Club. 6 Sunnyfleld Drive, Cortland f^Y 13045.
DUNELLEN NJ JUN 16
The Raritan Valley Radio Cfub will hold Its I3tti anrHjal hamfest on Saturday. Jur>e 16, 1964, beginning at 6:30 am, at Columbia Park, Dunelisn NJ, Donations tor lookers are S2.00 each; set lets' spots are $5.00 each liable are no4 suppiiedtt Food and dirink will tie available ai the refr^hn^ent stand. Talk-in on 14€.02&.62S (W2QW/Ri and 14S.S2 simplex. Advance tickets may be purchased from any club mamber For furlfier Infomia- tiofv call Ja^ Fisher W2IWK at (201)- 756-2546, Of Ted KopI WB2TKU al (201>725- 3461 t^etween 10:(S0 am and 10.-00 pm.
CnOWN POINT IN JUN 17
The Lake County Ondcaria) An^teur Radio Club will hold ita I2th annual Dad's Day Hamfest on June 17, 1964. 6:00 am to 2:00 pm, at the Industrial Arts Building at the Lake County Fairgrounds, Crown Point IN. Tickets are 92.50, All events will be held indoors and there will be plenty of parking and food. Talk-in on 147.S4/.24 and ,52. Fof further Information, contact Bill De Oeer W9TY. Hamfest Chairman, 3601 Tyler Street GaJY IN 46408.
FREDERICK MD JUN 17
The Ffederlok Amateur Radio Club wfU hold its 7!h annuat hamfest on June 17, 19S4, from 8:00 am to 4:00 pm, at the Frodw- Ick Fairgrounds. Admission is $3.00 and YLs and children will be admitted free. Tail- {latefB will be charged an additional $Z0O; exhjb4tt3r&' tables are f 10.00 for Ihe first and $5.00 for each additional or^ Gates will open for exhibitors at 6:00 pm on June 16, T964r and overnight security will tie provide ed. Overnight parking wilt be ^yne^comed. For turtfter information, write Jim OevlFbi&s WA3FUJ, 915 Pine Avenue, Fredehck MD 21701, or phone (301>«62-5784.
SANTA MARIA CA JUN 17
The Satellite Amateur Radio Cli^ wilt hold its 1964 Santa Maria Swapfest and Santa Maria Style Barbecue on Father's
Day, June 1 7, ^964, b&glnnlng at 9:00 am, at the Union Oil Ckxnpany Newlove Picnic Grounds, sooth of Santa Mana CA, off US 101. The barbecue wilt be served at 1^00 pm and tickets are $7 Jd5 tor adults and $3^ for children. In addition to the bart>ecue4 tt>ere will be swap tables, contasta, and gamaft. Talk-in on 14e34/.94 {WB6lfY/R> and 7230 kHi LSBw For ftirttter informatiOfi, tickets, or swap-table reservatior^ ($3.50 per space), please write Satelliie Amateur Radio Club Swapfest, PO Box 5117. Vandenberg Air Force Base CA 93437, and make checi^ pay^ito to Santa Maria Swapfest
LAS VEGAS NV JUN 21-24
The YL IntwnatlonaJ Single Sidebarwl System's annual cofweniion will t3e held on June 21-24, 1964, at 11^ Sahara Hotel, Las Vegas NV. Delu)(e accommodations and RV parking are availabie for reasonable rates. Planned activities Include a tour of Hoow«f Dam, a Lake Mead cmJse, a gala stage sftow. a cocklail party, a t>anQuet, and a breakfast buffet, as well as the OX forum and business meetings. YLRL ladles are invllod to meet Thursday evening, June 21 , at 3:00 pmu A convention station will be operating on 14,332 kHz. For tximplete de- tails and a registration packei. send a busi- ness-size BASE (37« postage) to Jan Weav- er N7YL, 2195 East Camero Avenue, l^as Vegas NV 89123.
ELGIN tL JUN 21-23
The Antii|ue Radio Club Of America and the Anttdue Radio Club of tlHr»Dis will hold Radiofest 64 on June 21^23, 1984, at the Holiday lnr>. 1-90 and llilnois 31. Elgin IL An- tique and classic amateur equipment of all kinds, as well as other vintage radio mem4> rabiiia, will be on display and tor sale. Ama* teur-radio participation is welcomed. Talk* iri on 146.52. For more details, write Joe Willis, BoK 14732, Chlca£K> tL 60614.
LIVONIA W JUN 29*30
The Uvonia Amateur Radio Club will host the 1964 ARRL Michigan State Convention on June 29-30. 1384, on the campus of Sctiooicrafi College. 16600 Haggerty Road a! Seven Mita Road, Uvtmia Ml (22 miles northwest of downtown DatroltJ, School- craft Is easily accessible via interstates 75, 275, 96, Of 94. The Swap-N^hop will be In Ihe noJn gymnasium, and one o<f the two parkirig lots will be set asi^da lor trunk saJes, Ma|ar exhibilors will be m the swap area, if requesled. Exhibitors' setups will tra on Fri- day, June 29th. from 12:00 noon untii 10:00 pfTi, and ttie displays wilt t^ open on Satur- day, June 30th. from 8:00 am imtil SOO pm. Tfiere will be security provi^d on Friday nights For more Information^ write Wayna W. Wiltse KSBTH. General Chairman, 1964 ARRL Michigan (Convention Committee^ 1446B Bassett Avernje, Uvonia Ml 46154.
SWIFT CURftENT SASK JUN 30
The Saskaictwwan Hamfest will t>e field on June 30, 1964, in Swift Current SASK. Registration will t»e the evening before. Features will Include contests, displays, a ladies' program, and a banquet. For more details, contact the Saskatchewan Item- Isst Commmae. Box 6, Swtfl Cufrem SASK S8H 3V5, Canada.
GRAND RAPIDS Ml JUN 30
The trhdepertdant Repeater Assoelatkm ol Grand Rap4ds Ml will hotd its annual Hamtestival on Saturday, June 30. 1984, ffom 0:00 am until 4:Q0 pm, at the Wyoming
islational Guard Armory, 44th Street, |ust west of the U&131 expressway. Admission is $3^, Free tatile space will be providdd to all seiiefs and dealer setups will be at E^OO Am. Pfogcams will include satellite opera- tions, packet radio, a W5LFL space shuttle movie, an AMTOR forum, a GW n contest, an antenr\a forum, and a shack pMwe oorh teat Talk^n on 147J6an 47.766. For ad- vance taibte reservations or for more infor- mation, can UneJa Hufley WD60KW at {616H57-1253. or write IRA, 562 92nd Street SE. Byron Cenler Ml 43315.
MAPLE RIDGE BC CAN JUN 30-JUL 1
The Maple Ridge ARC will host Hamfest "84 on June SO-Juiy 1. 1964, at the Maple F%dge Fatrgroiinds, 30 miles east of Van- couwr. The registration fee is $5.00 lor hams and 12.00 for non-hams over 12 years old. Features will irtciude a swap and shop, €orr{fTys(tiAl displays, hunny hunts, and taffies' and chikiran's pfognutis. Food and eafnper ^laoe with electricity wit! be avaiEable, Talk-In on 146.2D/.80 and 146-34/94. For more Information or pre- registration (20% off gate fee), coritaci Maple Rkdoe ARC. Box 292, Maple Ridge BCV2X7G^
OVEFtLAND PARK KS JUL 4-7
The MotuHfi Arrdteur Radio Awards Club, Inc^ will fwld the*r annual convention from Wednesday to Saturday, Juty 4-7, 1864, at the Holiday Inn in Overland Park K5. There will be a plcnrc for earty arrivals on Wedrws- day evening, and on Thursday there will be area tours and a dinner theater O1 Friday there will be antenna and computer forums^ and on Saturday morning the annual busi- nees meeting will be held. The hospitality suite will he open durtr^ ttte entire convert tion. For more information, send an SASE lo a 1_ Dyson KOAYO, R1, Bo* 230 M, Da 5010 KS 66018.
MAHOPAC NY JUL 7
The Putnam Emergency Amateur Re- peater League (PEARL) will hold its 3rd an- rvuai hamfest on Saturday, Jufy 7, 1964, (ram 9:00 am to 4:00 pm, at St John's Scfio6l Morwi^ior OlBrteii Boulevard, Mahopac NY. Genera! admission is 51. 00, indoor tables are $5.00 each, ar>d outdoor tall gat- ing Is $4.00. Talk^n on 144535^1 45,135 arKl 14652. For advance regisiratkm afd mo^e information, comact Frank Konecnik WB2RTP. R01, 244 C, Carmoi NY 10512.
FARIBAULT UN JUtT
The Faribault Amateur Radio Dub will tvold its 3rd annual swapfest on Saturday, July 7, 1964, from 9:00 am to 3iX} pm, at Rice Courvty Fairgrounds, Fartbaun MM. Tables are available only by r^ervation tiefore Ju- ly I SI. Talk-In on 146.1 9/, 79. For more infor- mation, contact Mike Ferguson N6DGG at (5Q7>744-S14S after 5fflO pm.
OAK CREEK W1 JUL 7
Ths 5<xjth Milwaukee Amateur Radio Club will hold Its annual swapfest on Satur- day, July 7, 1964. from 7:00 am to approxi- mately S.'OO pm, at the American Legion Post #434,. 9327 Sbuth Shepard Avenue, Oak Cre^ Wl 53154. Admission is $3.00 per person and Includes a "Happy Hour" with free beverages. Parking, a picnic area, hot arvd coJd &andwlcl>es, and irQuid refresh- ments will be availably Th^re will be fres overnight camping. Talk-In on 146.94 MHz FM. For more details, including a local map, write South Milwaukee Amateur Ra-
indoor and mitdoor programs, and special events ror tftdies and childrerL Rv further informat^Qn, contact J^oxa Hajtlkatnen 0H7OO, KauppaNatu 45, SF 70100 Kuopio. Rntand.
GUCIERPAflKlfr JUL 20-22
The Greal Palls Area ARC wItt |>reoon1 llw 50th anniial Glacjer-Walenon Inisma- tlOfiaJ Hamfeat on July 2D-22, 19d4, *t Ttitm ForNo Campground on th« southern edge of Glaclar National Park. Pro-r^gis^ t rat ion Is Sd.50 and Includoa Satuitlay^ nlgPit dinner (bring own meat and utensils) and SLinday^morning breakfast, TalMn on ,52 and .34^.94. Fof more Infomiatlon. send ati SASE to StiirleY Smith KC70A, 1822 t4tfi Av#nu« South. Great Falfs P^ 59405,
PETOSKEYIII JUL 21
The Straits Area ARC will hotd Its annual swap shop and computer demonstjral^on on Jtjiy 21. 1964. from 9:00 am to 2:0D pm. in the 4+1 Building at the Emmei County Fatf- grounds. Admission is £2.50 and tables are SS.0O each; setups are at SiX) am. RV camp- ing wltl be available nearby. Talk4n on 146.67 ar>d JSZ For mofe details, write Irene 8teln KAflNKS, 4437 Robinson Road, Pelia- ton Ml 43769. or ptione (6t€^63a«9ea
EUGENE OR JUL 21-^
Tt>e dth annual Lane County 14am Fatr will be held on Ju^ 21-22. 1984, at the Ore* gon NatJOf^l Guard Annnory, 2515 Centenni- al (across from Autzsn Stadium), Eugene OR. Doors will open at SjOO am both days. Registration and swap tatiiea are $5,00 eicti. Because ol hmlted space, a nocv
refundable reservation is required For swap tallies (nrtaximum: 2^ In addition to swap taUes, features wtll Include a 2-meier bun- ny hunt^ techrvlcal seminars, computer demonstrations, license ejfams. btngo. a kiddie korner. arvl women's activitiee. ITiere will be an af^^y snac^ bar. free park- ing for RVs (no hookups), and a Saturday pot-luck su|>per at S:00 pm, Talk-In on 146.28/86. 147 J6/^ and on ,&2/.5E For ad- vance tk^kets or laMe r^^rvatlons, send a cli^k payable to Lane County Ham Fair and &n SASE to Tom Temby WB7WPU, Treasurer. 3227 Crocker Road. Eugeru Oft 97404, or phone (503>*89^17S1. TkAel p^k- ets may also be picked up at the pra-regis* tratton table at the Ham Fair.
WHEEUNGWV JUL 22
The Triple States Radio Amateur Club will hold its 6th annual Wheiltng WV Hairv f ^ on Sunday, July 22, 1964, trom 9:00 am to 4iX} pm, at Wheeling Park, Admission Is S3.0O and children 12 and under will be ad- mitted free. Dealers are welcome and tables are available. Thefe will be a flea n^rket and auctions, all under cover. Re- freshments and free perking will be avail- aWe. Talk4n on I46^t/Jl and 147.75^.15. For a four-page brochure with mote Inform mation and a map, contact TSRAC, Box 240, RD t Adena OH 43901, or phone (|614>64&3930.
BEAVERTON OR JUL 27-29
The Willamette Vat^ey DX Club will hold the 19B4 OX Convention on July 27-29« 198^, at the Greenwood Inn, Beaverton OR- For further Information, write Bob Hemdon W7XN. §07 Andower Place, Port- land OR 97202, or plM»na (503>-232-2740.
HOUGHTON 111
JUL 23
The Copper Country Radio Amateur ASr^ sociation will host the 1964 Upper Penin- sula Hamfest on July 28, 1964, a1 the Me- mc^al Union Cafeteria on the campus of Michigan Techr>o(ogical University, Houghton Ml. For further Intormatton, wfite Howard Junk in NBFHF, Co-Chatf- man. UP Hamfest. 106 West South Street, Houghton Ml 49931, or phone f906H82- 4630.
WEST FRIENDSHIP MO JUL 29
The BattlmoFfi Radio Amateur Televi- sion Society (BRAT5} will present the Bf^TS MarytaiKl Hamfest and Com put sf- Test on Sunday July 29, 1984, a| the How- ard County Fairgrounds, Boute 144 at Route 32, adjacent to Interstate 70, West Friendship MD, about 15 mii«s west of the Baltimore Beltway {695}. Table sates are by advance reservation only; indoor tabiea along the wall with ac are 120.00 each and indoor tables in tt>e center ol the lloof without ac are Si 0.00 each. Quantity disr counts and tx>oths are available. There will be plenty of outdoor la I (gating ar^ RV tKOku^ will t)e available. Dealer setups begin Satur^y at 2:00 pm with overnight security provided. Talk<4n on 146.76 (^flOOJ, 147.03 ( + 600K and .52 simplex. Fof table reservations and more Informa- tfon. write SRATS, PO Box 5915, Baltimore MD 2120B, or call Mayer Zimmerman W3(^K al (301>€55-7S1Z
NASHVILLE TN JUL2&
the Radio Amateur Transmittlfig Society will bokj the s^icth annual Nashville Hmn
and Computer F^t on Sunday. July 29, 1964, from R-OO am to 3.30 pm, at the Nashvilfe Municipal Auditorium at ttte in- tersection of James Robertson Parkway and Gay Street in downtown Nashville TN. There will be no admission charge and tables wilt t>e available for S5.00. I^or further InfonnatLon, sefwi an SASE to Willie Porter KB4BLL 4907 Idaho Avenue, Nashville TN 372!»-
TRAILBCCAM AUG 4
The Beaver vailey Amateur Radio Club will hold a swapfest on August 4, 19&4, beginning at 10:00 am. at the Cofninco Arena, Trail BC. Talk^n on ^4GJ&4J24. For further infomiation and r^^rvaMons for table space, please contact BVARC, do 3796 Woodland Drive, Trail BC V1 R 2V7.
LAFAYETTE IN AUai9
The Tippecanoe Amateur Radio Associ- ation will hold Its 13th annual hamfest on Sunday, August 19^ 1964. beginning al 7:00 am, at the Tippecanoe County Fair- grounds, Teai Road and IBth Street, La- fayette IN. Tickets are S3.00. Features wifl include a large Kea market, dealers, and refreshments. Talk-in on ,13/J3 arkd .52. For advance tickets and more informa^ tion. write Lafayette Manifest, Route 1^ BoK 63, West Point IN 47992.
TRUMANSeURG NY AUG 25
The Fi^ng^ Lak^ Hamfest wifi be he^d on August 25, 1964, at the Tiumanaburg Fairgrounds, 12 miles NW of Ithaca NY. There will be e^lblts. a ftea market, refreshments, and overnight camping. Fot
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88 73 Magazine • June, 1984
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AL£XAMDER NY
Tbe Gefiesoe Radto Amateurs, Inc.. will hold the BaiavJa Hamfesi on Sunday, July S. 1984, fTom 7^ am 10 5^30 pm, ^1 tiie AIax- antle* Rfsmen's Grounds. Rte 98, AJ«t- ^ndgf MY, Atimlsoion is $3.00 In aiJsrance befbTG Jufw 22. I9ft4, and $4.00 at Ihe dOQn TTid commercial ^jchlbit area wiil open ai 9:00 am and there will be hot-air-ball pqfi rictet. Activltt^ will include bfaakfast M 6dOO am, a CW cofitesi, OM and YL pit> grams, a 52 ch^d^-ifi contest, a Ilea markef , a chicken barbecua, and free camplnfl (eleetriclty is S2,00). Talk4n on 6,52 a/KJ 4.7 1/ 5.31 {W2RC)Ci Fof furthet Information, ctmv lacl GHAM, PQ Box 572, Batavia NY t402a
BOWLING GREEN OH iUti
Th© 20t*i annual Wood County Ham-A- Rama will be held on Sunday. July 8. 19B4, beginning at S:00 em, at the Wood County Fairgrounds. Bowling Groen OH, Admla^ 9i0fi and parlting are fre^. Trunk aaJes and fodd will bt avail atH& Advance tabt« rent- als are $5.00 and are for dealers only. Sat- urday will be available for setups until @:l>0 pm. Talk^n on 52. For more information or dealer rentals, s&nd an BASE to Wood County ARC, c^ Craig Henderson, Bom 366, Luckey OH 4:M43.
SHEBOY&AN Wl JU114
The fifth annijal Sheboygarv County Amateur Radio Glut> Lakashore Swapfest and Brat Fry wilt be held on July 14, 1964. from lOiX) am 1o 4-00 pm. at the Wiieon Town Hall. »outh of Sf>eborgan Wt. Tabtffi are free and earring li available ai Terry Andrfi State Park. For a f tyttr arxl other inlor- matlcn, wrJte Julian E. Jetzer KRSS, QA€0 Hawthorn Road, Sheboygan Wl S30Q1. or phone {414H57'3386 after 51» pm COfT.
MILTON ONT CAN JUL 14
The Burlington Amateur Radio Club will hoot the tenth annual Ontario Hamfest on Jutr 14. 1964. from 7:00 am to 4:00 pm, at 0% fairgrounds in Milton Of*T- Tickets are $Z50 \n advance and $4.00 at \\m gate. Weekend camping, free packing, and free flea-markel tables will be available. Fea- luriis wil] include indoor commercial cNs^ plvyt as well as the tradlttonal events. Talk- In on 2VB% (dub repeater). For rnore de- tails, contact BARC, PO Box 836, Burl- ington ONT L7R 3Y7, Canada,
EAU CUURE Wl
JUL 14
The Eau Clafre Amateur Radio Club will hohJ lis aniiual hamfest on Saturday, July 14, 1964. from 6300 am lo 4fl0 pm, at the 4-H tMJtIdings ^n Eau Claire Wl. Tlck^la vn S2.00 In advarwe and ^ .00 at the door tables ar>d coffee are free, Talk-^n on 3i/,9i and 52 simpIeK- For more intomiahon and tickets, send an SASE to Qene Ufiberg KAdDWH. 2B40 Satufn Av^^ue. Eau Oaire Wl S470a
AUGUSTA NJ JUL 14
TTie Sussex County ARC wtll sponsor SCARC m on Saturday, July 14, 1964. beginning al 8:00 am, at tfie Sufi&ex County Fairgnsunds, Plains Road, oH Rie. 206, Augusta HS. Admt^ion Is S2.00. Indoor t^les are S&OO in advance ard l&OO at tt>e door, lailgat« space Is S4.00 in advance and JSOO at the gate. There will be food and re- fresh ments and ptenty of tree parking. Talk* In on J90/.3O and 52 simplex. For further Irv
formation, write Donald R. Stickle K20X. Weldon Road, RD #4, Lake Hopatcqng NJ 07649, Of phone t20l>^63H0677.
CHARLESTON SO JUL 14-15
TfYe Charleston Amateur Radio Society will ho(d its ani^aJ hamfest or^ July t4-lS« 19B4, at ttie Omar Shhna Temple. TalK-in on t44l&.79, Fof furttwf infoTTTiatlon, write Hamfest Committee. PO Box ?0341, Charieston Heigh is SC 29406.
KMS5EVAIN MAM CAN JUL 14-15
The 2l9t annual international Hamfest wilt be held on July 14^15, 1984, at the I rv twnatiorval Peace Garden betweefi Dun- Mllh ND arK) ^^ssevain MAN. Aciivities
V*l
1* »L.--:
^ji
will Include transmitter hunts, mobile judging, and a CW contest. Excellent camping facilities will be available. For mor« JfltormaOon, contact William W. Bosch WDtEMY or Stanley E Kltte4son WDISDAJ, Box H, Dickinson ND 58601.
LOUISVILLE OH JUL 15
TliB Tusco Amateur Radio Club (WBZX) and the Canton Amateur Radio Club (WaAU will present the 10th annuai Hall of Fame Hamfest on Sunday, July 15, 1984, at the Mimiahillen Grange. 6461 Easton Street. Louisville ON. Admission Is $2.50 In advance and $3.00 at the gate. Tablea a^e for rent on a resoAred hauls. Talk-in or^ 14652/.52 and 147.71/.1^ For feservatlons or more Information, write But^ Latxjilii WA8SHP, 10677 Hazel view Avenue, Alli- ance OH 44601, or phone (216)-821-8794,
LAPOHTEIN JUL IS
The combined LaPorlB4rfictiiQan City Amateur Radio Clubs will sponsor I heir Summer Hamfest on Sunday. July 15, 1964, from 8:00 am to 2:00 pm^ at the La- Porte County Faligrounda, State Road 2, west of La Porte 11^, The donation Is $3,00 at the gala. Good food, cold dilnks, and paved outdoor partying will be available. For re^ervatlDns lor indoor tables <40«^footK write PO Box 30* La Porte IN 463Sa
KllOnO, RNLAHD JUL1fi-22
The Amateur Radio Club of Kuopto will hold the annual hamfest ol lh« Rmtlffi Arruteur Padic League (SRAL) on Jofy 19-22. 1964, m RauhalahtL Activities wilt In- clude SRAL loruma, technical and DX talka,
ANTENNAS & TOWERS
THIS MONTH'S FEATURES:
m-GAIS EXPLORF.R-14 - $264. 95 HYGAIS TH7DXS - $399.95
CVSHCRAFTA3 - $202.00 CVSUCRAFT R3 - $254, 95
BUTTERNUT HF6V — $106. 00
(ArressoHfs in stock }
CUHIQXift
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Shipfn) frfi|rhi paid. Otdfii umtf with Hv-Gain
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?;hippin^ on all.
A mwerisa major imrstmenf ftf timv. money, and sweat. To he lertain mu ner what you umit and nei*d to €i/mpfvte ytmr tuMaHaium, fjrsj time arouttd^ we suggest you wme m wiih v&ur itemiied tteedx and gvt our whiten proposaL A few exim days now can saw weeks of frustration and wailing fater
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ne^vLTt fir iiMigkiuon MimH^iiiy Bikf iftSnJ r]L~c-|iit h rodidlcd
73 Magazine • June, 1984 S5
mora Information, contact Wanda Loveloy K02X. 443 Jenv Smith Road. Un»lng r^Y 14882.
lAAflYSVILLE OH
AUG2S
Tbe Unidfi County Amatour Radio dub will hold its 8tfi annijal hamfi^t on Sunciiy, Augysl 26^ f9B4, begirvrising ai 6.1X) am, at the faLrgroufKls in Marys vl lie OH, Ticitflls a/e $2.50 In advance and S3.00 at the gate; XYL3 and cliildren wbll be admitted ffoe, A i(Mooi riea-mart^et space is f 1i}0 (no elec- tricity avairabJe}. There will be food. For fur* ther information and tfckefs, contact Gene Kirby WaBJN. 13613 US 36, Marysvllle OH 4304a or phone ai3>€44-<>4€e.
CHEROKEE OK
AUG2S
The 2nd annual Great Sail Plains Ham- f est will be he^d on August 26, 1 984, from 9:00 am to 5:00 pm, at the Community B<jildtng on the south 3id4 of the Gnuit Salt Ptains Lake In north-cenlral Okla- homa. Faaturas will Indude tachntcal fo- rwns, Organjzatlonbal meet tugs, Ir^e swap tables, refreshments, McM^ce exams, afid a noon pot4uck dingier. Ovefnight camp- In^ and RV hocKkups are aval labia at the Lakes State Park. Talk-^n on the 147.90^.30 Salt Plains repeat ar. Fof more Infomu- tion, write Steven Wi^i WASLTTO, Box 222, Chaffee OK 7372S, or phona (4CS>-fi96^ 3467,
WINDSOR IME
SEPa
The Augusta Emefgency Amateyf Radio Unit win sponsor tt>fi 1984 ARRL-sanc- tloned Windsor Hamtest on Salurday. Sep^ temt>er a, ^964, at ir»e Windsor Fairprourtds,
W4 ndsor M E The gate donat Ion Is sti II $t .00 and camping will be avanabta on Friday and Saturciay nights. Fealures will include a flea market, progranis, speakers, commer- cial dislhbutors, light nrbeafSt and the tracfi- tional Saturday bean and casserole supper. Talk'lTi on the 146.22/.82 repeater. Fof fur- tner infofmatkon. oooiacl Deri Hanson NtAZH^ RFD «2, BoK 3678, Greene ME 04236, Of ptnne (207^946-7557,
SAN ANGELO TX SEPft-t
The San Angeio Amateur Rad^o Clul;» will hold CEN TEX HAMFEST B* on Septomper B-@, 1964. In the San Angelo Convention Center. Tickets are S5 00 in advance and $6.00 at the door. Hours fof Saturday are noqn to 6:00 pm and for Sunday, a-00 am to 2:00 pm, Specjial events for the ladles In- clude a Saturday afternoon tour of Fort Concho ard Old San Angolo^ There will be s^rninars and group meetings Saturday afternoon and Sunday morning, and a re^ ception for dealers, followed by a soctaJ houf tor amateurs, on Saturday night, Tall- in, on 148.34j',94. For pre^registratlon or ho- tei/motel accommodatlor^, write CEN TDC HAMFEST -84. PO Box 375?. San AngetoT^
AUGUSTA QA SEPie
The Amateur Radio Club of AuguBtft mm hold its annual hamfi^t on September 16, 1064, at Julian Smith Casino Park. Tickets are SI. 00 each. 6 tor $5,00. or 13 Jw $10,00, Featum Will Include a flea rrkarket in the partt^ng lot. a baitMCue, fefre^rnents, dealers, entertainment . and on Saturday evening f a hospitality room at Ramada Inn West, Washington Road, rooms 108-110. Talk4n on 145.49 - 600. For more informa-
tion, send an SASE to D. F. Miller WB4YHT, Hamfest Chairman, 4505 Shav^nee Road, Martirwz GA 30907. w call H4O4)Me6O^700-
NEW KENSllStGTON PA SEP 16
The Sicyvlew Radio Society wrtti hold Its annual hamfest on- Sunday. September IB, 1964. from noon until 4:00 pm, at it>e ciut? grounds on Turkey Ridge Road. Mew Kefv eington PA, Registration fee Is $2.00 arxJ vendors' (oes are $4.00, Awards will be presented. TaJk-tn on MtM and JS2 sinnpiex-
WICHITA KS SEP^
The Wk^tilta Hamfest wilt be held on Septamt«f 23. 1964, at Camp Hiawatha. 1701 West 51 St Street North, Wicnita KS
67204. Features will Include a flea market, programs, and commercial exhibits. Fof mofe infom\ation. contact Norm Tramba WAA4WH. 340 S. Ist. Cleamrater KB 67C£2e, or ptione P16>564^25.
PAftAMUS NJ OCTI*
The Bei'geri ARA will hold a Ham Swap 'n' Sell on Octobef 14, 1964, from 8:00 am to 4:00 pm, at Bergen Community College, 400 Paramua Road, Pa ramus NJ. There will be tailgating only; bring your own ta- ble, Admission for sellars Is $4,00; buyers will be admitted tree. Thousands of spaces will be available. Talk-in on ,79/.19 and .52. For rT>ore Information, write Jim Greer KK2U, 444 Berkshire Roai^. ftidg«- wood NJ 07450. Of phone (201H45-2855, evenings onEy.
MM HELP
I am looking for ttie service manual for the Tennelec Memoryscan MS-2. 1 will pay for postage and copying cost
Rotwrt tUTadoux KBdJE
1577 Poa« noad
Edwardsvllle IL 62025
I would like to obtairk/purchase Informa- tion and^of book s^pubiicat ions on cort- Strucfion of linear amplifiers for amateur- radio applications and the correct use of such equipment-
I would also like to learn more about Ihte Yaosu FT080 CAT system.
Eugene P. Honahun
1Q7 Princeton Road
PIscataway NJ 06654
Hal lie rafters HT32 iransmiiier ache- ma tic and tuning instructions wan|e<L Will pay for reproduction cosls.
Hifi>ld D. Donaldson WB6SKV
8650 Phoenix Avenue
Fair Oaks CA B&628
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73 Magazine • June* 1S84 87
W2HSD/I
NEVER SAY DIE
ec//tor/a/ t>y Wayne Green
from p&ge 6
seem to quickly get lost when emotional factors come up. Let's take a look at what experi- ence has taught us so we won't forget it.
1. In virtual iy every emergen- cy^ the first thing that goes out Is the telephone. Storms, rain, fire^ explosions, downed planes^either the wires go down or the switching systems bog down and radio is alt that's left. This means that In efnef- gencies radio is suddenly going to have to be abJe to handle an enormous amount of message traffic.
2. With few exceptionSt the other radio services are inexpe^ rlenced in dealing with emergen* creSp are unequipped to provide the equipment and technical people, can^ interconnect with other services, and are unable to provide short-, medium-, and long-range communications. The only service really geared to pro^ viding serious emergency com- munications is amateur radio, and amateurs should plan to be able to intercommunicate with other services so as to help the police and fire departments, for instance, keep in touch.
3. In every emergency situa- tion, the amount of message traffic is vastly beyond the capa- bility of the few available trained operators to handle. This could be solved by developing equip- ment which does not require trained operators to us© and by making the communications as high-speed as is practlcaL
4. Equipment and skills which are not in everyday use are just not dependable In time of emer- gency,
A nuclear attack (which is the most serious emergency now concej^ble) is what is called the "worst case." Other than hoping that some ham will crawl out of his cellar with an intact HT or mobile HF rig and start from scratch, is there anything we can do? That scenario isn't likely to dissyade Russia from taking advantage of a perceived
73 Magazine * June. 1984
communications weakness some day.
Would that I could be as blas4 about American security as most hams (in other words, just not even think about it) and get annoyed If the subject is brought up.
After working with a group of dedicated hams for several years on this matter of ham emergency communications, c®'- tain limiting factors have be- come evident. One is the rela* tlvely small number of active hams we have, particularly younger ones who wilt have the stamina it will take to survive an attack and set up communica- tions. The other is the dependerv cy on communications which are t>oth inherently slow and de- pend heavily on difficuit-to-learn operator skills.
Amateur radio is so patheti*
cally far behind In technology that there is no real justification for the continuance of the hobby from that viewpoint. Indeed, our leaders have aliowed the pres- sures from old4imers to so Influ- ence the hobby that there Is lit* tie honest justificatEon for the hobby on any basis. One of these days someone is going to say out loud that the emperor has no clothes and we could lose all those nice private fre- qoencies. No more DX pileups. No more traffic nets sending useless messages just to do something. No more rag-chew- ing. No more repeater clunking. No more repeater wars. No more jamming of nets. No more bands jammed with contesters. No more certificate-hunting. No more ham club meetings with three-hour arguments on what coior to paint the clubhouse. What would we do? What would we do?
A generation or two ago there were some strong justifications for amateur radio. Old-timers can remember when the rules and regulations were accepted as fundamental truths. There were four reasons cited In the rules for the existence of ama- teur radio as a service and for
the setting aside of millions of
dollars of spectrum space.
We were supposed to provide a supply of trained technicians and operators for our country In time of war. Indeed, without am- ateurs, WWII would have been much more difficult. But those were the days when amateurs did keep up with technology. In- deed, they were in the vanguard, inventing and pioneering virtual- ly every major new communica* tlons technology.
Today, with most new hams going the Bash route, it Is un- usual to find anyone with even a vague technical background. In the meanwhtle, the technology has rushed years ahead of the average amateur. Many of us were working years ahead of the average amateur. Many of us were working with digital com- munications over 30 years ago, yet these now-old commercial techniques are still not even on the horizon for amateur traffic nets— which are happily brass- pounding away some fifty years behind the times. How many years has it been since ama- teurs contributed something to communications technology?
Inventing and pioneering are the punriew of youngsters and we hams have grown old and cranky. Few of us have been making any effort to get kids in- volved with hamming. A dis- tressing number of the ham clubs I've visited in recent years seem to have made it a practice to discourage youngsters from joining.
Okay. Perhaps you can see that If there Is going to be any re- alistic emergency communica- tions system established, we are going to have to have a whole lot more hams than we do today— and they are going to have to be younger and livelier. I can just hear tlie curmudgeons on 7S-meter phone huffing and puffing over that.
You know, I get on 20-meter l>fK>ne as often as I can spare the time, and it is rare that I run Into someone who is not retired^
You're still wondering how all this fits in with my FCC petition, right? Well, that has a lot to do with the enomnous number of comments filed in response to the no-code proposal — mostly by ARRL-member ham clubs. The gist of these comments was quite consistent: No ham should be licensed without Morse-code skills because these are needed for emergency
operating. The old theme of '^when all else faiISp GW will come through" was said so often that one might think there was some truth in it.
Okay, Let's say that whatever that numt^er of hams agree on actually Is the truth— by defini- tion. So if we accept as a fact that we must know Morse code for use In emergency times, then it is inescapable that all hams should be able to demonstrate their competence with the code. The basis for not permitting the FCC to set up a no^ode license test on 220 MHz was the need for CW skills for emergencies. So, If the hams who inundated the FCC with these statements were not lying, the logical next step was to see that CW skills are maintained, Ttiat's called putting up or shutting up.
My proposal cited the no- code responses, i read through the voluminous report from the Commission when the proposal was terminated. I concluded that the only toglcal reaction to this massive agreement by the ARRL clubs would be some measure to make sure that hams would not allow these crit* ically-important CW skills to de- teriorate and thus not be avail- able when needed.
Further, since the depen- dence upon CW for emergency communications would pretty much rule out the development of high-speed automatic digital communications such as I have been trying to promote for the last thirty years ^es, I know when I'm licked, and we know that the volume of emergency traffic is Incredible), amateurs would be doing their hot)by and our country a senous disservice if they did not continue to devel- op their CW skills to some prac- tical speed level.
During WWII, hundreds of thousands of people were taught to copy CW at 35 wpm— FOX, the Navy called it— also the speed which most of the commercial CW services used to use before they were automated about 40 years ago. Obviously, almost anyone can learn to copy at 35 per, so why not set that as a norm?
Sure, i knew that the same chaps who were so vehement about newcomers having to learn code would be the first to scream bloody murder if anyone suggested that sauce for the goose was sauce for the gander.
I
I
The Cfy would be "grandfathefl", rigfit?
Oh, I Knew that the FCC woutd turn down the petition, probably with no good reason given. And i was correct. But I did want to hoid the FCC's hand in the fire on thts one l^ecause they got suckered by a bunch of ctubs and old-timers into preventing amateur radio from being able to grow with the times.
On numerous occasions, I have written that I'm not at all sure that it isn't too late to save amateur radio now. A no-code li- cense might have helped, as It did In Japan. But there It hit big so that they have al^out three times as many Itcensed ama- teurs as we have, and v^/ith only half our population. Odd, isn't it, that Japan is graduating seven times as many electronic engi- neers as we are? I wonder where they are coming from? Does anyone have an \iiea7
Are we gofng to be able to put together anything significant in the way of an emergency com* munlcatlons system which might possibly survive a nuclear attack? 5o far, I see not even a
hint of hope for this. We need a massive infiux of youngsters. We need to get cracking on developing already-known tech- nology so we can have high- speed error-correcting commu- nications which anyone can operate. We need a million new hams, all with the energy and enthusiasm to make all this happen.
I'm still trying to get the con- cept of ham clubs back into our high schools, I'm working on a high46ch college. My ideas are beginning to be accepted, so we'll see what happens.
NoWp about the code. If you really, honestly t>elieve that it is important, then you must agree with me that it is every bit as Im- portant to make sure that this key skill is not permitted to dete- riorate through disuse. This means retesting.
if you don't agree about re- testing, what other way is there to look at it except that code is not critical to getting a ham li- cense? So» are you for code for others, but not you? Code for all? Or no<;ode for all? Your deaL
WIN WAYNE^S HAMSHACK SWEEPSTAKES WINNERS
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PRIZES 6- sa BOOKS
J. O. WhaJey KA7NRC 0709 37m NW Seattle WA 96117
Richard H. Aahtoct KAfiZRZ 22826 Lattgo Dr. Laguna U\Que\ CA 92677
iugerw W. Clark W2HTA 50 Sroad B#ook Rd. Ashuetot NH 03441
eion C, Ballard KA6LEB
Rtl
Stierwood OH 43556
Hubert a Cox W4PXZ 1230 South Orlando Ave. Cocoa Boach FL 32931
Wayne E. Nelms 111 N. CamftronSt StOftinc VA 22170
Craig A. Packard vyAISXP
6201 Corporate Dr.
STE250
Landover MD 20765
John P. Winn WB7DXG ft170SW179AVe. Banwlon OR 97007
D. L Murdoch K40VI 6600 Contoum Dr. Oriindo FL 32810
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Aipheus W Russell weiFT 250S Hopkins Ave. Bedv^ood Ctty CA 94062
Gragfl E. Weniworth WD5CNM
PO Box 4282
CoaieQfi Station TX 77844
Ronald A. Wynner WA6WLZ 4466 Stansbury Sherman Oaks CA 9! 403
Gary G. Altman K4NNK
704 Windy Way
Signal Mo«n(aJn TN 37377
Harold W. Paul W7ADK 1002 Buckboard Blvd. PapJIJton NE 68046
Jeffrey A, Kato KD5VF 5719 Fair Forest Dr. Houston TX 77096
Steve C. Ramay WH6AUL 37220 POfter Lp Wahawa HI 96786
Laurie M, Tsuda KB6AFi 5600 Kingston Wy Sacramento CA 95S22
Robert H. Drexter WA3ZOE 901 Ejghtfi Ave. Conway PA 15027
Charges B, Church WBTVW Highwood MT 59450
Allen J. achiavonl W3GEV 3107 Brighton 5L Phitadeiphia PA 19149
John A. Magenheim WA9CPR 8681 No. 60th SL Milwaukee Wl S3223
Dwain A. Kinard 2907 Radford Dr. Owvn&boro K¥ 42301
Harold F. Slurn 2412 Jim LoeRd. Tallahassee Fi 32301
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John F. Loriaux WBSTBG 7687 Foothill Blvd. 101 Tujunge CA 91042
Matmas Hettinger KA1JNU 1 0 Cheyenne Rd. Oxford CT 09483
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MichaaJ Baker KOQZ 0032 W. Iron wood Or. Peoria AZ 85345
Stanley J. Rykwalder W8AUS 23819 Lynwood Of. Noxthvllie Ml 48159
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Steven P. Doming uez WA6LKS 91 34 Ranoho Real Temple City C A 91 780
Billy R, Bollard KA4LHU 122 Partridge Rd. Wilmington NC 28403
Bayinofid G. Terry KG IP 51 N. Browrtelt Rd^ WilJIStOn VT 05495
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Mtnoft Torr^$ KP4iNT POBost699C Candsanas PR 00629
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73 Magazine • June, 1984 89
WEIV PRODUCTS
COM-RAD*S NEW **UNTENNA"
Development of « new lowi>rofafo. verti- cally-polarized Uniehna^^ deflioned to oulperform oonvgntloiral whip antennas mofe than lar* times the height has been announced by Com-RAd lnduatris» o4 Buf- falo Hi.
Heifltit redycilofii of 80% and more el- levFate damafle caused by garage doofe, undergfoynd ramps, Ireee. drivel n or aer- vice-staUon cafio^tea. and oihw cleal"- amt hezardA, the company states.
Aecordirvg to Corn-Bad. Utitefhoaa will iwntfil a wide rani^ of mobile, portable, and fixed radio uaeta Irvcluctlng comnrton carriers, er>d pubKc-safety, wlreles^'Secih ritv-system. government, milltaiY, forest* ry, mer|r%, alrcraftp ami tagsi fiwaAnd uetry vehicles.
Com-Rad reports that, l>scause of Un* tafina'e riigbd construction, mobile flutter or "picket fencing" Is a^tmlnated, result' rng In baae^fltation^uailty transmiMlOTL Quieter reception with tesA adjacent- channel tnterlersnce (lntermo<^ Is Cited, and gained through Untenne'e high Q design. Mede of stainless steel, alumi- ngm, phosphor bronze, arid chrome plate, each antenna Is noted to ba tilghfy rests^ tani to cofroslOTL Unlike whip antennas, the Untenna may be encloaed fn an op- tional weather resistant, high-Impact pJastic cover (i^dome), which Is useful aJeo in dlagulsir^ ttie antennas.
Untenna Is current fy avalLatile In flw models lo Ufve Irecm^ncv ranges ot 25-40; 45-35, 140^^70, £10-240. and
43(M70 MHZL Combination, single^ieed- ilnt models lO serve rnultifraQuency re- qulremenla are a^eo available.
GomplBte information Is contained in a new, illustrated bLilletln evelleble fram Com-R^d tndUBfri»$, 25 tmson Str&eU Btiffafo NY 142 W. RMder Service number 480.
HAMTRONICS GAASFET RECEIVER PREAMP
HamtnKilce. inc., he« just announced a rww low-nol&a preamp, using a new dual- gate GaAsFET recenily designed eape- dally for service in the VHFaJHF bands. Up until now, to get the low-r^olse figure of a GaAsFET, a designer had to adapt a transistor really intended for mtcfowave service, Tlrey work well, but they cost more and the devlcee tend to oecHlate be- cause they have so much gain at the lower VHF and UHF frequencies Also, being aingle-gete devices, ttvey tefid to have tf^e Cltaractefisticajly high feedt^ack capaci- tance eseoclated with tf lodes ^ This makee them hard to tame under a wide variation In toad impedances.
T\m new ING-^ ) seties of preempt solves thesB pfoblems, proved ^ng good gain, modsniely low noise figure (0 7 to QM dB, depending on band), and low cost. The LNG-{ ) aeries p ream pa coat mucli less than ths earlier type of GeAsFET pre- amps. GaAsFETs typteaJiy give a wide dynamic rajige for good overload <:harac- Isristtcs, and this unit \$no exception. Ad^ ditlonatly, the new dual-gate devices used
In the LNG have buiii^ln diode protecilon to reduce the chance of damage due to slatic and traneients. Units operate on standard + 12 to -i- 14 V dc, artd they are Msy to time. The case aJiows for easy nriounllng anywhere. Including the tops of towers, LNG preamps are available for all ham bands. 10 meters through 460 MHz.
For mere Infomiatlon^ Including a free catalog on other H ami rentes products, contact Hamfro/r/cSt ''*c-- ©5 Mot/i Road, mton NY r44G&953&; (7t6>^2^^30. (for overseas msfifng, phase send US$2.00 or 4 iRC$J Reader Service number 482.
HAMWARE PROGRAMS FOR THE V1C'20
Tliree new HAMWARE programs by John Vesty Comf>any are said (o ejctend the utility of V1G-20 computers to logging and QSO operations.
HAM LIST serves as a memory jogger during a QSO. quickly searching for a call and displaying data on liia T?te program provides tor the convenient addiliofu revi- sion, or deietlofi of entries, and a screen- review of the list,
QUICK LOG provides automatic log- ging of date and time, and search by ca)l or QTH. Jhe list can b6 pflnted, saved to tape. Of scfeerKevtewed as desired. Time is displayed on the menu page.
QSO MANAGER combines a terMnlnute fdentiflcatlon timer and a 24'liour clock, witfi a screen-based notepad for use dur- ing a phofte Of ON QSO, The notepad in- corporatea a wdrd-wrap rout me to ellm^ nate broken words at tt>e end of a line. The timer can be set, reset, or can pel led at any time.
The three programs are avallebTe on tapea, vtd ere deefgned for use with botti unexpended arvd exparMJod VtC-20 oornputers. Capacity of the logging prc^ grama ranges from 100 to 700 entries max-
imum, dependlnn on the memory expan* ston used and the length of Individual en- tries.
For further Infomtatlon, Contact John Vesfy Ccmpatty, 41S E!m Stm^i Fsy^tte- viila WV J 3066^ Reader Sen/lce number 483.
LARSEN INTRODUCES CELLULAR ANTENNAS
Larsen Electronics has introduced a new line of cellular antennas with a wide ctKJice ol cosmetic arvd rnounling options. Ttie Larsen CM series ia av^JtetJe in gain Bnd quarter-wave modeia.
The new CM-825 5m over 1/4 wave fea* turaa an opan^otl design that delivers Z-4B gain and a 9&MH2 bandwidth. The t^8e is chrome plated, whl^e ttte wtilp t\a3 the exclusive Kulrod plating. Ttte 8GM- B2S offer$ the same elect rtcal configure^ tion with a Teflon^^ -coated baee and rod. Both are shipped with black and white piaatic bases to give customers a cosmet- ic Choice.
Larsen also offers CM-aeriea quarter- wave antennas with chroma tCMQ) and black Teflon {BCMQJ finishes. The quar- ter-wave models provide a 90-MHz band' width aiKf deliver unity Qsin with a com^ pact 3" whip.
Larsen' 3 new cellutaf system offers a ct^oice of weatherproof mounting optiions. The CM-K/CM-B permanent mount re- quires a 3/4" hole Of the antenna may be mounted temi>orarily with a mag mount or irunk4ld mount. A^J me avaliabte with RG- 68AJ ©r Teflon TFE low-loss coax and TMC connector. The CM permanent mount also ie available with iow^oss AA-3006 coax end TMC connector mount. Other cor^nec- tor types are available.
For riKKe information, contact Larsefi Electronics. PQ Box t799, Vancouver WA 98668: (206}-573'2722. Reader Service number 4S5.
/ B
I
Com-fltarf tndu$ifiBM* Uniennae. A, Modet CB4A. 450^460 MHi; B. Mod&i CR2A, f40-f7e MHz; C. Optionai fladome Mpdei Cf^RD (fits Untenna Mod^a CR2A CS3A^ CR2MA^ D. Mod9f CR2MA duaf-tuacUon, munttreqmncf Untenna, 140- 1 70 MHz, ptu$ 440-^460 MHz; £ CRr09A fmftcaK 29-35 MHz.
J
• *
1
Cvilutar aniBnna$ from Lafsen Eiec- tronie$.
90 73 MagazinB • June, 1984
I
CONTACT EAST FREE 1984 CATALOG
Contact East J3 offering a free 19&4 Elflcironic Tool and Te«t rnslrumfint Cata- log featuring over S,000 qualiry l^hnlcal products for assembling, testing, and re- pairing al&clfonic oqulpmen!, Tfiia is an «Ht»llefit buying guide for engineers, tectvnicinns. amj feaearchors.
Products Indude precision tiand toois^ test Instruments, tool kfts, and soldering supplies, plus a new, full selection of slat lc<»ntro< products. All products are tuUf lilustratad wilfi pHotographs, cfetallod descriptions, and pf Icing to allow for easy Ofiiering by pfione cm- mail. Moat ortJers »m sliipped wftWn 24 hours and cany a 100% satisfaction guarantee.
The Contact East 1964 Calatog Is avail- alKe from Cootaet East, 7 Cypress Dfiw. PO Bo)t 160. Burfinglon MA 01BO3; ^fTj- 272^057. Reader Sen^ice number 478.
a E CORPORATION'S PROTOTYPING BOARD
The "eZ Bo^fd" is a aofd^rleas exporl- fnwtter system wtiicli prov^dn a tlme^sav- Ing i:nd convenient method tof f^uilding experimental add-ons to Interface with personal compulera.
f^muma include a titgh-quallty glass epoxy primecf circuit t>oafd mounted with a set of solderiess breadboard I ng units for buitding circuits. Four separate dJSlrf- butlon buses with 50 tie points each can be used tor power, ground, clock IJnes^ reset commands, and more. A four-post- ikm Dtp swHch Is mounted on tt>« tjoard. Each switch position connects to a se^t of tie-polni-bfoch sockets on either g(de, to atd In the d^elopment and analysis Of ex- perlmeniai circuits, A fiaj ritibon cable t^hnecta the tward to the computer's bus- expansion slot.
The tjfeadboarding area consists oi t460 tie points with a capacity of sixteen 14-pin OIPs. Components with lead diame- ters of up to .0^2 simply plug in and are connected with ordinary solid hookup wire. The board will be very useful m R & D for engineers, hobby I sis, and students who wish to build their own Interfaces to com- put«r$ It aids in understanding the op^ era t Ion of a comptttef's bus system and provides the function of each output ler- minel of tt\e bus fof use In developing add- on circuits fof Iriterfacing to a comput«f.
Models IPC, APC. end CPC are avaH- able for IBM-PC, Apple, and Commodore and alt other hardware^compatible com- puters of ttm same type. Models for other computers will be iniroduced during 1064, international patents are pending.
Fme Contact East csialog.
For furtlief Infonnaifon, contact Mr.
Rahim Sabadia dt S. E. Corporation, PO
So* 1132, YorbB Und& CA 92686:
(714^^30^9335. Reader Seivtce number
47S,
AMATEUR RADIO GETS ITS VERY OWN GAMEJ
The Dayton Hamventlon I9fl4 saw re- lease of Amateur Radio's first offidaJ 0ime pfoduc*. called Hamfeai!" t984. it is produced and distributed by QCD Mar- keting Services, a division of OCD Publi- cations, tnc., whtch publishes the ATV journal, A5 ATV M^gazfftB.
Hainfest! has its own game, colorful {^fne board, dice, money, and drawing cards, players move around the game boafd buyfng as much ham-radic-type equipment as they can atford while trying 10 advarxie tfiemse^ves from Novice- to Ex- tra<;lass FCC license. Along the way, there are helping QSL cards and penalty QRM cards. Two squares are designated FCC test areas from which each pCayer draws special FCC cards to determine whether or not he studied hard enough to pass to the neitt grade license. An addi' tional two squares designate Hamfest lo- cations from which aH players t>egin a trada/buy/seli limited time period. There is a bank ami retail store with the first player reaching the Extra^Jass status declaiod Super Ham and Ihie winnorl
Ham fast} is available at most ham- radio retail dealers or Is available direct from OCD Marltstirtg Services, PO Bqx H, Lo¥fd6n iA 52255; (3JBJ-944-5421. Reader Service numtier 434.
Th0 KU4 Eiectmntcs, fnc, B^teme Af/irAX dfsh.
KLM*S SATELLrTE MJNf X DfSH
KLM Electronics, rnc. has announced the introduction of its new MInl-X satellite TV antenna, a parabolic dish with an &- foot diameter to meet the needs of home Of commercial uaefs with limited space.
The Mtnl-X is the third entry in KLM's line of modular, radar-mesh, pa^atiolic dishes. Its modular design permits fast shipment and easy assembly even by am- ateurs using simple tools. The smaller, lighter, MInkX can be assembled by two people in 1 Vi hours or fess or by 1 pOfson In at>out 2 hours,
Tt*a MInl-X empioys the san^e basic modular design as KLM's X-11 ar*d X-T6 antennas, with the same survivat capabili- ties against the elements, including the ability lo withstand tOO-mph wifMls. it has 16 ribs compared to 24 for tbe 11-foo! X-11. The MfnI-X operates at 55% efficiency, like the X-t l. Its V6 ratio Is .34 compared with A7 for its larftfif cousin. It Is available with a tow'cost, manual -type mount or with a KLM polar mount and tangential drive compatible with KLM motor drives. The Mini-X can be ordered id dark green, black, or brown,
For further Information, contact KLM Etecnoffim, inc.. leeaO Church Stteat, Morgsn Htli CA 95037,' {27 2^986-^6668. Reader Service rtymber 479.
ELECTRONfC SPECIALISTS' HAM GEAR PROTECTION
Protection and Interference control products are presented In a new 40-page
me
HI-TECH EQUIPMENT PROTECTION & INTERFERENCE COKTRdL CAT/itOG
catalog from Electronic Specialists, Cost- fy damage from lightning or power-line spikes can be prevented^ and disruptions or Interference from power-line-carried EM1 and RFl can be controlled, Protec- five devices for ham geai' Include ac ilrte- voilage regulators and conditioners, modem and phone-llne surge suppressors as well as equipment isolators and fii- ler^suppr essof s .
Typical protect Ion and interference problems are described, together with suggested solutions for various ham and cofTTmunlcatlon rnst alia t ions. Catalog 341 also describes numerous applications for hi tech equipment protection and Interfef- ence control.
For further Information or to obtain, write Efecironic Sp^iafists, fnc., f7f South Main St. PO Box 339. Natick MA 01780; 000^225^376, Reader Seniles number 431^
THE MCM ELECTRONICS DMM/OCM METER
MCM Electronics, a parts arxl acces* sories distributor to the electronic service industry, has introduced ttw Tenma com- bi nation DMM/DCM meter with hFe tran* sislof-gain tester. Users can easily mad voltage, current, resistance, capacitance, and hFe on (be clear Vk-lnch, SVi^iigit LCD display, tt saves lime and money by eHminatIng the use of both a conventional capacitarKe and a multimeter.
Ught weight and compact tor use In the
Vta aZ ptototyptng board
Efectmrtic Spsciafisw catalog of ham ffear profectlve dowfcss^
Th& MCM EleotrortlGs DMM/DCM merer.
73MagazmB * June, 1984 91
flalil or cm th« btficii, tri« metac^s Itvllne push-by (tons allow for easy ono-hand op^ erallon,
ThQ ^ap^cltance-maaskirinQ socket gives d tract iT>easi^rs{n«ntB of capacltOfSr
■long **th A transistor tiFe, The color- oodad pan^l aUows u&ers aasy Identifica- tion of function and ranga sattlnps.
Safety faatures include input overioad protection, sifigle fuaing {w(th apare fuse
IftSfdef, and stftss r^ief lest laads. Th« Tenma cCfnbJ nation DMM/DCM metef comeo In a convenient carrying case, *ith alllgator-c!ip hFe leads, and has b one- year warranty. Battery<}perated, tha LCD
display IfKHcatsa low battery uMMJUfcuw To 961 further information or to order, with 24'hour delivery, call tolMree fSO0> 543-4330 //n Ohio, (S00)'762^3l3^ Reader Ssfvlce numtaer 477*
REVm
TRIO-KENWOOD TW-4000A
Trio-Kan wood unveiled the TW'400QA at ttm 19i3 Oayto^ Ham vent lon» and that Is where I iiot nity first lOoK at one. The mode^ oo dis|Hay h^d the opiional VS-1 voice syfithesizer installed, and after a few minules playing time, I decided that I had 1o have one. In fact, I didn't gel around to purchasing one until that fall. The locai ham-radio a tore, R & L Electronic a, lat me play with a powerecl-up unit a/id de^rvorv atrated feature mrvd I tie various of}tions thai tKoy stocke<L Tm sotry, ixjt you last eant get tHat kind of servlca through an BOO-fiymt>er purchase. I ended up going home with the TW^OOQA. tha VS-I, and ma MA4QO0 duai^and mobile antenna.
The ''PM Duai-bandOf," as Kenwood likes to call it. is just that. Capabte ot transcelving on either 2 meters or 44d MHz^ It outputs a respectable 25 Watts on t>QXh bands, it is one of tha very few rigs on the market capable of more than 10 Watts output on 440^ My own unit actually mea- sured about 30 watts on both bands with a Bird^ wattmeter.
A long list of other fnaln reatures Irv eludes: a iafge, easy-tcKMK] llquid^:rysial display, an Included MG-48 touohtone^^ microphone, battery backup (nice when you take that rig I mo the house at night), pf lofity watch which switches ihe receiver b«ck to chanr>el qoa for one secofid out of ten to watcli for ealls, and dual vfo's.
The TW-4D00A has three main options available. These Include the VS-1 voice ayntheslzer, tha TU^C Contlnuous-Tona Coded $quefch System {CTCS3) tone en- ^ixJer, vKl the MA-iOOO duai-bar>d moCNie antenna. The VS-t voice-aynthaai^er boa/d came In a palntirfly smail boot but in- eluded a complete set of instructions for InstallatlOFi and jse (In two languagea). Engrtah and Japanese, as If you hadn't guessed, instatiatlon went smoothly, aa per Instructional tod left me with an ex- oats board containing tne pcevlous beeper circuitry. I Kepi mine,. J don't know why, The V&-1 speaks In Iwo larv guages (go ahead, try to ouesa) at three speeds. The English voice haa an accent of distinctly Japanese female extractiohj but It is easily understood. The flip of i awittdi gbtm you fhe same vocabulary in ilspftneM, to the great delight of gueiiB and children. Watch out for those kida, though; tt lakes them only a short while to pick (t up and they 11 be driving you nuts In Japanese A switch is located on tt*e twt- tom of the rig that allows you to turn off the voice syntt^esiier wtien desired Thta is an Important feature wt^en or\ long trips and the XYL Is trying to sleep or when she's driving and you want to wander the band without distracting her.
The MA4O0O dual t>and antenna is an Interesting affair. On 2 meters it is a cen- ler-trapped 5/B wave. On 440 Mhtz, h<MW- «MF, the trap phases two Vi wavea In cot- Unsar fomn. YBOh. t know. You've gotta s«e H. The i>as6 of the antenna contains the equivalent ot a P 1^259. This unique fea- ture ratsas all kinds of Interesting mount -
§2 73 MagEimn • June, 1984
ing possibilities. . .and problems. A mag- netic mount Is available and It Is quite strong. Personally, I am a fervent t>eliever In pafmaneni-mount antennas but could find no mount of that confituration. So, I Improvised. Tt^ose who cringe at the thought of df ill ing ho^es in an automobile body Should shieid their eyes, I found a a lightly-longer than- jauaE SO 239 Socket, drilled a hole In the center of the roof to fit. and tightened a nut down on an "O" ring purchased from a local hardware store. This arrangement has served me faithfully with no leaks for six months. Tha TIMC programmable tone encoder is also ac- csssible from the bottom of the radio and alicvva the setting of one tone each for both VHF and UFH The TIMC will gener- ate any of ttie 37 atandard ^uttaudible tones try setting a DIF switch according to the chart Included In tha owner's manual.
Htm a word about whistles and bells. You know; those little features that make or break the long-term ownership of tha fig. The dimmer switch dims the display for night driving (you'd be amazed at how bright 11 is otherwise!)^ The "soa/t" feature la at ways nice wtien you're tiored or on tt>a open road. "Skip" allows the memory scan to bypass unwanted channels, "Reverse" lets one check the Input of a re- peater to assess simplex poasibilltles, Ttie microphone-monitoring feature pro- vides a visual indication on the \\q\ji^ crystal dlsptay as to whether or not your mike or touchtones are working. The owner's manual is extensive and quite complete.
Then comes my pet peeve with many figs— the included schematic. The sct^e< matic diagram thai comas wittt some rigs is either so email ihat you need a photo eniarger to read it or is spread among sev- eral pages of a booklei^ preventing easy interpretation. The peraon that drew the schematic for the TW«4000A should get a pat on tt^ b«ck and a raise. Drawn on both Sides of a nice big 10'' k 23" sheet of paper, it is well marked and easy to read. The interconnect ?ines are spaced 60 thousandths of an Inch. This Is a con- siderable Improvement over the more comrrKtn 20-thousandths spaclngp espe- cially when ten or 30 of these tinea run par- aftel for any distance. The PLL unit and MO-48 microphone are drawn on the back In filca open lin^. Regrettably, as with many other Kenwood radios, no schema t* ic diagram of the microprocessor unit Is provided, ^or those that never work on their own radios, this is of iittle cor^se- quer^ce. Each of these features by iiseif la not enough to recommend a radio. iHjt a.\* together tt>ey are a f ormfdatkie piackage
The Kenwood TW-^DOOA Is far and away the beat mobile rig I've ever owned and, for the person interested In FM only, it makes a very respectable home station as well.
For more Information, contact TrkyKeth wood CommuntcMlions. fllf W. Walnut. Compton CA 9ttZ2C
Robert W. French II NSEHA Lawlsburg OH
THOMPSON SOFTWARE MORSE CODE TRANSLATOR
Outstanding. That is my overall asaeas- men! of the new program offared t^ Thompson Software. The Mor*e€ode Translator decodes CW aiKl scrolls ttre output from right to leU on a single line across the monitor screen, input is direct from the receiver headphone Jack to the TImax 1000 computer earphone connec- tor. No terminal unit, hardware modiflca- llona, or special attachments are needed. What's more, the program also generates CW arid sends ll via the mierophona c<^n- nectcK , The best part (aside from tha price} is that the program fits into the 2K memo- ry of the unoKpended Time?c lOOO. I have not tried the program In the Sinclair ZX^I or the Timex 1500: however^ due to their almltarity to itw model 1000, 1 suspect that there would be no compatibility problems.
The translator decodes letters, num- t»ers, and 1S other characters (such as AR, comma, period, etc.). To use the program^ load the cassette In the normai fashion^ the program la setf starting. A brief copyright notice appears on the screen and ttvsn the receive mode, shown In Rg. 1, appears. By enlerii^ a period, the screen switches to the format In Fig, 2, the code-speed input. Once selected (the range Is d to 100 wpm}, the screen switch- es to Fig. 3, which gives the opiion of sending or receiving.
I have confined mysetf to CW reception; sending requires an audio amplifier con^ nected to the computer microphone port. Reception has bean a very pleasant sur- prise^ The computer does an excellent job of scrolling the translated CW on a slngie iinot a total of 32 characters wide.
1 ristened on is, 20, 40, arid SO meters and found the reception very good even In noisy situations. My receiver was a terv Tec Argonaut with a Murch dipole. I than switched to my Sony IGF 2001 to poke around the SW bands, looking for com- mercial and government CW stations- 1 fouiKf savaral and had no trouble with ft>e transiatlng. Computer-generated noise was t>arely noticeable on the Ten-Tec l»ut was somewhat obtrusive on tha Sony.
Reception was aNvays very good when proper CW spacing was found. Sloppy fists resulted In the scrolling of various "E" and T" characters. The old adage, "garbage-inp garbage^out," is v^7 clearly demo»*st rated in the Thompson Transia* tor. See Rg, 4 for a sample of tfie output when in the receive mode.
The program has boen copyrighted and cannot be discussed in any detail, How* aver, It is similar to many other TFmex lOOO CW programs previously published in both QIJC and QEX newsletters. The first line is a REM statement ttiai contains the
machir^e language, Typically. ML is load- ed Ijy means of a short routine that Is sub- sequently deleted before using the pro- gram:
FORl= 16000 TO 17000 INPUT N
NEXTl
The balance of the program is devoted to tha formatting of the screen, selectfng the QW speed variable, and various timing and USR commands. This is an elegant lit^ tie program that does a great |ob wrth lltlie rrwrftoryi
Why use the TimsK 1000 computer for CW reception whan there are so many alternatives? My reason Is tha low cost of the unit Available opt ior^ lr>ciude a dedl- cated microprocessor like the HAL RTTY unit or a code reader like the Microcraft GODE'STAR or an MF J terminal unit for a home computer. All of these cost far more than my calculmtor-aized Timex. OrlBlnally priced at 1^50, this computer can now be purchased for as Utiie as $9.B5 on special sal^. With something like 750.000 unlis In circulation, it shkouid be no problem lo acquire one secorkdhand. t bought mine for $15.00 at a flea market.
There are a a vera I options lor CW recap* tion with ths Timex 1000. The cream of the crop Is the ^'CWSS" split-screen CW trariscesver packa^ thai includes a pro^ gram and tvardware from NU4V. Priced at $90, this unit is reported to t>e an excel lent performer, tt comes \n a kit that must ba assemt^led and plugged Into tha rear of
PRESS . TO GENERATE
ffg, I.
ENTER SPEED IN WPH 05 TO ig0>
Flg.Z
bPEED = £0 lilpN
tl II
TO RECEIUE
fig. $,
KfllCMC DE K4KUP
PRESS , TO GEHERhTE
Fig. 4.
I he computer A simpler method requires a knowledge of transisloMo-transistor Log- ic end ihe assembly ot a terminal unit. This car^ be conrvected lo p4n 20 of IC1 of the TlmeK computer, and with tt>e right software, H will do a Qood )c>& ot ne^^elving CW. I zapped an IC with some lll-advlaed modlflcaUons of this sort. Static electrici- ty does not mlJt with IGa very well. The tlUMTipsofi Translator |t£PJ9S^ Is Et>e clveep^ est solution that I have er»countered- Input via tire microphone port is directed to pin 20 of 101 without requirement of major si/rgerv on the computer.
AlMn all, 1 give very high marks to ttie TI«inf»on Software CW Translator and fecomfnend II without leservation. l hope that the Thompson staff is hard a! work &r\ a RTTy program. Both programs would be welcome additions to Timex software li- braries. For further Information^ contact Thompson Software, PO Box f2G6, lorn- banfiL 60t48. Reader Service fiufTrber 4a8.
TY>oniaft Hart A DIB W*«twood MA
REGENCY Zm SCANNED
The Regency Model Z30 is a full-feature scanner that should appeal to those r^ quiring maximum operator flexibility. Cov- ering l ho thre« FM bwids, the Z30 features 30 prooramm^ble chanriels and a host of feaiures provided by microprocessor con- trol A cluck and alarm clOfik are included. Although designed for home use, the monilor can operate in a mobile environ- ment using a provtoeid 12'V power connec- tor. A telescoping antenna Is included with the unit, and although fine for rKirmal use, a connector i$ provided for an exter- nal antt^nna.
Aa soon as I unpacked the Z30. 1 was im- pressed by trie layout of ttie controls. Uiv like soine devices wtth keys so small a
pencil tip \^ required equlpmetit, the Regency features a full-si^e, 24-key touch- pa<J and power^ volume^ and sciuelch con- trols. Setting freQuencles Is i srw|>. f>fo- gramming tt>e frequwicy ol a local repeater was accomplished by first depressing the MAKUAL button. A loud "beop'* announces contact cloaura in no uncertain terms. The display {of the bright -green vacuun> liuofescent typel in<ticales the channel number Mng programmed — In trtf case "CH 01". Tl*e desired frequer»cy is then entered digit by digit on the keypad. Any programming mistake Is easily fixed by using the CLEAR button a/id reentering the numbers. I n^anaged lo correctly enter 147.375, Depressing ENTER assoctates the channel and frequency. No band- switching Is required, as any fr^uency within the threa bands can be associated with any channe^^ All 30 cJrannels are pro- grammed in similar faslitofi. A DISFlAY button allows ttie user to immediately identify any ol the 30 possible channel- frequency relation ships. Any errors or In- correct control sequences are Indicated by English-like ejror n>essages created by the mjcroprocassor.
T?ie Z30 supports all popular scanner tunctlonS' Hidden frequencies within a band are isolated easily using the SEAI^CH furKtIon. The upper- and lower- frequency raopes of the search are entered using multipurpose keys After depressing SCAN, any reception within the bounds locks the receiver and the fre-
quency la displayed. Two optiona may then be employed. If you are like me^ It lakes a tew n^oments to write down a new frequency. A DELAY function caus^ the Z30 to ho4d for four seconds after carrier disappears before scannir^ is resumed. If you like what you hear on a new channel, depressing HOLD keeps you there. Search- ing is tefminated at any lime by using any otiiv f uncUon kay.
A favodte channel may be cbecked every two secorvds for acllvity by program ming It Into CH 01 and activating the PRI- ORITY function with a single keystfoke. A simple scan of preprogrammed channels Is Initiated by depressrng SCAN. A DELAY Option holds sach reception for two seconds after transmission to allow re- Bporvses to be heard- A single channel is continuously monitored l>y selecting the CH with the MANUAL budorK
Alt in att I fourxi the Regency Z30 easy (o set up and understand. Regency did not overlook receiver performance In this de- sign. Some of the allband. fully-synthe^ sized machines function well on one bar^d arvJ suffer on othefs. Since (fie Z30 owner's manual actuaffy published speci- fications for the bands 30-50 MHz, 144-174 MHz. and 440-51 a M Hi, we decid- ed to check some of them. A friend who Is a repeater owner ^operator provided the equipment and expedise required to run accurate tests. Receiver sensitivity tt2 dB Sinad) exceeded the published figures of
WHAT DO you THINK?
Have you recently purchased a new product ttiat has beeini reviewed In 73? If you have, write and tell us what kou think about it. r3will publish your comments so you can share them with other hams, as part Df our continuing el tort to bring you the best in new product ifi format ion and reviews. Send your thoughts to Review Ed I tor. 73 Amateur Ba^tos fec/!»rrrcaf Jouma/. Peiertiorough NH 03458,
.35 uV at 40 MHz, .4 uV a1 160 MHz, ar>d .5 uV at 465 MHz by comfortable margins. Operaling a S^meter hand-held In the Same roofn did not cause Ifte entire mid- dle baiKl to go dead. Squetch action Is cflsp and the audio quality Is acceplable, A tist of synthesizef "birdies" is provided in the owner's manual. On my sample. sofT>e were present, t»ut ai least the ownei la forewarned.
TT>e Z30 pacitafie is rounded off with a programmable tirT>e-df-day clock and alann clock. These clocks are programmed via the keypad. The alarm, wfien It soutkIs. Is very loud, unmel odious, and guaran- teed lo wake up anyone. (I'll bet on thai!) A 0PM switch allows the r>ormally-l}fighi dis- play to t>e dimmed w turned off altogether at night. A capacitor backup system Is claimed to hold all programmed functions for a week when ac power is absent. 1 didn't test this function as l play with my Z30 daily, but no data was fosi wtiiie transferring the unll to my car.
\ have two units wfth the Z30. The base plite for Ihe touch pad is a baked, metal- lic-brown color, The numbers and func- tlor« pninted by the keys are almost un- readable under dim or Indireci illumh nation. The ''t)eep" lone used to verify key closures and for ihe alarm clock is unnat- urally loud and harsh. However, the fea- tures and pefformance of the Z30 out- weigh these minof problems. Ttie 20-page operator's manual is complete and under- stand able. Full technical spec i heat ions, tfoobleshoot^ng guide, and "national fre- quency list" are included.
For additional inforniatlon, contact Ae^ Q^ncy BlecuoniCB, Inc., 7707 fleco/ds St, Indianapolis fN 4622&99a6; pny545-*2af. Reader Service number 487.
John Moilnar WA^ETD GrMntteld HH
RTTY LOOP
Marc L Leawey, M.D. WA3AJB 6 Jenny Lane Pfkesvitie MD 27208
Okay, so that's one! You see, as I begin the eighth year of this column, I have to admit to making a mistake. I don't make many here, but this one Is a doozy. Thanks and a lip ol the cap to Ed Duellman K9FWR. Duane Vincent KA7JEX. and the countless others who will no doubl wrtte t>etween the time I write this n^onth's col- umn and when It sees pr^nt.
To explain, in the April column I dis- cussed ttooking a Murray-erKoded tele- printer to an ASCI) port of a compurer, in I hat case, a Texas Instruments T1 -991/4 A. The problem was that I was referring to a Teletype Model KSR'35 as a Murray ma- chine, it is not- The Model 35 is a 11 0-baud ASCII machine. The prot>lem arose in my scnbt>led note to myself, wtierein I changed me "35" to a "32'\ The Model 32 Is the Murray version of the commonly found Model 33t which la also an ASCII machine.
So, tf you all will take a pencil to your April fssue and change ttie reference to a ilodel 35 to a Model 32, all win come out ail rigttt. Mo, Ihls was rwt an intentional April fool's joke, although It seems to took like one. And* fortunately, the general ^ASCII-to^Murray discussion Ol last month remains iinaffected.
As f mentioned above, this is the start of the eighth yoar of HTTY l^sop. Because we have picked up a good number of readers In the last few years. I think It is t^me to re- view some general points that may be confusing to tfvs newcomers.
What ts RTTV7 "RTTV*' stands for radio- teletype, a mode wherein amateur-radio communication is maintamed us^ng sig- nals d«codad to activate various kinds of teleprinters or computers.
What kind of printers or t^omptitaml Some ol the pioneering work In RTTY was done with teleprinters which look like the ones you see in newsroom photos oJ the 19S0s. Vari<His designations are given to ttiem^ rTK>st of them relating to Tetetyp© Corporation model numtiers. After a period of slow growth, where mostly mechanical teieprlntefs were in use, RTHf Is now going through a boom with %t\e ar- rival ol microcomputers. Software, that is, programs, are available for about any home computer to turn It Into a RTTY ter- minal.
What do you talk at^oiit? Well, what do you talk about on ham radio in gerveral? Sure, topics include the equipment you are running, the weather, and the usual ruI^^^the'mill stuff. But, since today's RTTYers are likely to t>e In the forefront of digital technology, computers and the like are atso active topics. Not only Ihat, but
RTTY stations afso can send lorvg texts such as nw^sages, programs, and the like, and, especially arourvd holidays, some of the famous RTTY pictures.
Wh&r0 can f find a RTTY station! Still popular after all these ysars. look for the doodiedo of RTTY signals arourwl 3520 kHz or 14060 kHz. Timers are ott^er spots, and you may even find a focat two-meter repeater with a RTTY net.
Wow much will it cost to g&t or? RTTY? How much does a car cost? You can prob- ably locate an old teleprinter around for a few dottars. Simple AFSK generators and demodulators have been published here and will be published In the future as new designs appear. Or, If you have a micro- computer such as a CoGo or any of the 6602 mactiir^es, a sawtxjck or two should tKing you enough programming to put that machine on the air. It's clearly r^it out of reach for nrosi hams.
Where ca/7 / Hnd out more? You kr>ew ttnere had to be a point to all ol this, right? Well, you are holdir^g, in your hand, a po- tent source of RTTY information. Keep reading 73, keep reading RTTY Loop, and you should tie able to get all the Informa- tion you ne^.
I was not kidding about the bargain ma- chines, folks. As I write Ihls column, I am recovering from a day at the Greater Balti- more Hamfest and Computer I est. Ne^t month i hope to prlnl a few photos of the sights. Deadline precludes getting the film processed this month, tiut let me tetl you— Model 15 and Model 33 teleprinters were tieing sold for leas than fifty dol Fa re, some for much less! The computer dis- plays, tables and tattles of thiem, olten showed F1T7Y programs available. The
tide is turning, ladies and gentlemen, arkd RTTY Is growirvg faster then evert
I have a letter here from Eric W. Daven- port N4DT€ who is using a SSOg^based mi- crocomputer under the FLEX operating system and is looKinp for a RTTY program to use on that computer. Well, Ertc, I tuive looked around and, sorry to say, can flrwl nothing that would support the system you are using. That is not to say It does rvoi exlstn though, and if any readers are using such a system on RTTYh I would t>e hi.ppy to hear abovt if and will pass tt\e irv formation along to Eric One source you might try Is '6& Micro Jourrtaf, a rnon1h?y magazine devoted to the fl8xx series of computers. Tliey lean toward FLEX and 6609s, so it sounds like your league. You can subscritie for one year by sending $24.50 to '6ff Micro Journal, 5800 Gassan- dra Smith, PO Bo)t ft49, Hiicson TN 37343, Be sure to drop my name, ok?
Orte more ham wfio has fourMJ ha;>< piness with a Tl'9W4A is Paul Schmidt W9HD. Paul passes, along his comments* with the note that his computer la on tr^ air with the aid of the Kantronlos Hamsolt program and the AEA CP-I "Computer Patch." He enjoys operatmf RTTYh tiut I fiBVB to paits alor^g his last few iines^ You see. Paul works as a radio operator on a supertanker, and he writes, "By the way, I'm not too enthusiastic at>out AMTOR. On tf*e ocean, we have SITOR and MARl- SAT. On this ship, we have neither one. I send my traffic a letter at a time on CW. How atXHTt that?" Thanks, Paul, artd I do appreciate tl>e comments.
Here Is another letter from a ham trying to put yet another kind ol computer onto HTTY. John A. Palese, Jr. WBSJPH/5
73 Magazine • June, 1984 93
wrrtos several quesUons. The first seeks Ihe existence of a program to place an Oi^ t»rne 1 on tr>t air on MOfSe, Murray, and ASCII, Well, the last one k& emy, John. Any terminal program, such a$ the public tlomaln MODEM7, will do f^n# to produce ASCII. I have not seefi anything on the boards for RTTY or OW, but I'll keep my screen cleen and looking,
John's next qimation shall be para* phrased tor obvious raagons. ''What do you ttiink ot the MLlchIg compytar with a Flalschig interface tor use on RTTf?" Un- less I have seen the combination in ques- IktOt tttere Is no way I can answer the UMiitionl As a njte, any r«f>utmbl« product •ppttars to be functionaL I have received very few "lemon" reports, and those I try
to pass along as best I can here in ttte col- umn, usual ty quoting the reviewing ams- tetjr dtfOdly. 1 would encourage you to look around to see if you can play with someone eisa's system In your area be- fore y04J buy^ I <k>n't know that I woo Ed base the purctisse of a partlcutai micri> computer on the desire to run RTTY, how- ever, tl Is rapidly appearing that any orw of the "consumer" line has supporting soft^ ware- So yotj sea, my overall actvlce If you want to run a computer on RTTY is to first pick I he £x»frtputef. Pick it for what It can {So within, aivt wlthoi^. amateur radio. After all, a computer la loo powerful a tool to limit to one use only. For that you could
get a dedicated terminal. TTwri look for software and interfaces that appeal to you. Believe me^ whatever I have seen I write about. If I have not written up a par- ticular program or Interface, it Is not rte- cessarHy twcause II is tied; I probably have not had any hands-on eKp<^ure lo It. And as atited here before, i won't write up an item based on a press reieese unless Ihere are extenuating circumstances. I have done that in the paat and we all got bitten^ no mora!
Hope that Helps you out, John, and thanka for Xfm not«t
Because of the two-month delay bo- tween the time I write this column and publication, i am dragging my feet this
month on itie Iniormai^on sheet marv Honed iatt month, t want to see what the reaponaa Is and attempt to react accord- ingly. So I am stIH offering the first of sev- eral planned information sheets on RTTY. Simply send a Be If -addressed, stamped flffiKtopo or autfielent US funds for pt^* ug0 to foreign staitona with S2.00 to ttie above address for the first sheet, an ala- mantary introduction lo RTTY. If the de- mand keeps up, sheais will be Introduced lo cover many of the atemantary topics discussed In past columr^.
Next month will ir^lude a looR at ttte re^ cent hamfest. If the pictures corrife out and more of this and that. Let me trear from you, then look tor your name here» In RTTY Loop.
FUN!
John Edwards Kf2U POBox 73
Middle VUfage NY 1 1379
BASIC C0MPUT1KQ
It you're a fcxward^th inking ham {as op- posed to I hose lids who devote ttieir lives to repeaters and rag^hew nets), you prot»- ably own a microcompter. But do you ever actually program your machine? Proda- t)ly. But odd a are that you get mofe use out of canned sol t ware than your own cteaUona.
As my dear friend Doctor Digital always says, programming is tun. That n^ay be true. But which language Is best?
Basic Is by far the most popular micro languaga. Basic in ROM is a standard fea« ture on most pefsonal computers. Still, its awkwaid syntax and arcane struct ura maka it a clumsy language lo use in all tKJt the most simple (dare ^ say baaiq?) appil* cations. Pascal Is much nicar, but has been slow to catch on. Everyone likes Paa* cal, but few actually seem to write soft- ware with it. AssamOler is bet let yet, bul is much too compltcalect for newcomers to haridle.
So we're stuck with Basic. All In all, frs not an Imposslbia language to work with, given Its inherent llmliattons. More than one Fiaid Day logging program has bean writiafi In this language ar^ I supfMse
hams will continue to use Basic for years to come.
This month, for bet tar or worse, FUN! looks at the world of Basic. GOTO Ela- n%ent i,
ELEMENT 1 MULTIPLE CHOtCE
1) The original form of Basic is known as: 1^ Dartmouth Basic
2^ Princeton Basic
3) Original Basic
4) Basic Basic
2) Which ot the following Extended Color Basic oommands teUs a Radio Stiack TRS^ Color Computer to send sound through a TV speaker?
1) SOUND ON
2) SPEAKER ON
3) AUDIO ON 41 TV ON
3) Wtto invented Basic?
t^ Stan Wright and Herb Anderson 2} Frank Sullivan and Steven Klein
3) Thomas Mcintira and Steve Jobs
4) John Kemeny and Thomas Kurtz
4) What function does the system oom- mand CALL - 151 serve on an Apple 117
1) Puts ttie computer into ttie rrtonitor mDde
2) initialises slot 1
3) Activates I he computer's 60>0olumn card
4) POKES the decimal value tSt into immory location 167£3
HAM HELP
I need a ect>ematlc and service manual for the Lafayette BCR-101 shortwave receiver.
Marvin H*ta W2WKU
204 Quiinaway Road
Elme NY 140S«
Wanted; Program tor tiw Commodore VIC-20 and/or C-64 computer to allow them to t>e used as an electronic maEitwic (B6BS or M SO) on the air on ASCII and/Or Baudot; may be commercial program or tiometxew.
SSQ. Qary E. Kohlala DA2Xf OSAF&A, Box 1416
APONroe45«
Wanted: An Instruction manual lor a Leeds and North rup galvanometer brldgSn catalog #4270. safiai #1041207, Will gladly pay U>pying and mailing costs*
Vemon Jonas WBlfiVH 32 Cat Motwam Road Kannabunit ME D4043
Can you help me find a book tor trouble- shooting radio problems? Especially receivers. I'd like lo urtderstand the theory arHi wtiai to check fof with particular symptoma-
RayPoH J922 Calumat Fnnt Ml 4«S03
5) Wtiat function does I PL serve on Radio Shack's Modei 1007
1) Automatically aitecytes a spec i Med program as soon as the computer Is switched on
2^ Seta the computar^s raaKtime clock/ calendar
34 Initializes ttie 300 tiaud modem
4^ It serves rto purpose
6) The Commodore 64 comes with how many bytes of random-access rnemory?
1) teK bytos 2)32Kbytes 3j4aK bytes 4iS4Kbyt05
7) CPfM ia:
1} A language
2) An operating syatam
3) A local area network
4) A popular word-processing program
8) PRINT USING:
i)\& not a Basic Statement
Q Tails ttie computer to print strings uS4 ng a non-ASCII format
3J Prints numbers Of strings In a vari- able formal
4Hb a standard part of Applesoft Basic
9) LUST Jo Microsoft Basic: 1) Prints listings langthwEse
2} Cannot tie used as a program state-
mofit 3} Sends a listing In merTKHry to a printer 4) Prints liBllngs twice
10) On a TRS-BO Model III. PRIhfT®: 1) Would print iha character "@''
2} Tells the computer to print a ctiar- acter at a specific point on the video display
3) Is r>ever used
4) Tells the computer to output to a printer
ELEMENT 2
TRUE FALSE
Separate the working from the non- function a I Basic program lined.
TriM Ffllia
ly TO 7 'HELLO*
2) to C ^ A PLUS B
3) ID LET A = B
4) 10 FOR I = 1 - S
5) 10 A + 6 = C
6) 10 C = A X B 7)101FB = C m to GOTO
gj 10 INPUT 10 10} 10 PEEK 167^
ELEMENT S
SCRAMBLED WORDS
Unscramble the rol towing Basic corrv mands and statements; UNR TtSL RtTPLN
PUINT BUGQS EWN
LAREC HENT POST
ONE FENTID MID
ELEMENT 4 FILL IN THE BLANK
1) Many Basic programs use a /NEXT
loop,
2) Every RETURN must have a ,
3) Programmer commants are contalnad in a statement.
4)iFA = 2D 60
5} To get a result from READ, one must supply at least one . statement.
THE ANSWERS
1. S-t. 6-< 7^2,
Elmrmnt f : 1*-1, 2—3, 3—4. - S— 3. 9—3, 10—2. Et^ment 2:
I^Trua The question mafh will work as a PRINT atatement or command on most personal computers. 2— True But netref A + B » C. 3— True LET Is optlor^l, bot you can toss it in if you want to waste memory, 4— Falsa TO. not '-", is what woflts. 5— Falsa Sae qyesUon 2. e— False lyiuttipily with-'^notrx." 7— False Not a compMKMHiaMtt.
Toss In ft TH@«. 3— False No line numtMrspadfied. 9— False Needs a varfatrie, 1 0 — Fal se M emory address must be I n
parentheses. Eiemeitt 3:
RUN. UST. LPRINT; INPUT. GOSUB. NEW; CLEAa THEN, STOP; END. DE- FINT, DIM. Eisment 4t 1— FOR 2--GOSUB 3— REM 4— THEN 5— DATA
SCORING
Eiemenf !:
Two and one4^alt points for eacti correct
answer.
Bioment 2:
Two and one-tiaff points fof each correct
answer.
Eiement 3:
Two points for eacfi word unscrambled.
Ef^mem 4:
Fiva points for each vvord cfirraeily fitlod \tu
Have you conquered trie basics of Baalc?
1-20 points— Til Ink computers are ^usl a fad 21-40 points — Tbink computsf pficas
ani atti) too high 41-60 points— Happy to run canned
software 61-^ points— A true^lue hackaf 81-100 points^ Program in machine code for kicks
M 73 Magazine • June, 19B4
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73 Magazine • June, 1984 «5
CONTESTS
Robert &3km WB2GfE 15 Windsor Dr Atco NJ 08004
ABRLVHFQSORAflTY Starts: 1600 GMT June 9 Ends: 0300 GMT June 11
sponsored by tha ARRU the object I? to work as fnany amateur slalions In as many di(fei:«ht ARRL sections ai>d coyn- Irios »s pc^sltfte using suttiorUdd smtr teur froqueocios abov^ 50 MH£.
Operating oaiegorles Include singla^p- erator u sing mu! tl- or 3J ngl e ba nd i or m u 1 1 i- operator. Slng(e<»per3tor jj tat Ions must use ona person for ell of>eratJng and log- gIniQ f unci lions. SJr>gle^>pefalQr stationa may subTnit single-band scores im SO, 144, 220, 432. and 12d6-and-ijp categories. ContiCts may t>e made on any and all bafida without jeopardizing stngle^and entry status. Stieh additlofiat contacts ajre encouraged and should be reported.
Multi-opefator stations must locate all equipment (including anlennas) within a 30O-ma!er circle.
StatEona may be wofked oncm par taralt regardless ot mode. EacJi QSO mwsl \yt acknowledged; on&'way exchanges do not count. Foreign siaiions may weak only stations in the USA, Canada, and US pos- sessions for cont«i^1 credit.
Reirarismitting sith«f or bottv staiions or uM ol repeater frequencies Is not per- mitted. Contesi eni rants may not transmit on repeaters or repeater fre<^uencies on 2 metefs to solicit contacts. Use of the na- tional calling frequency (146.52) or imme- diate adjacent guaid frequertciss ts also protiibited. Only recognized simplex fre- queficies may be used, such as 144.90 to 145.10; 146.49, .55> and 5fi; and 147.42, .43, ,48, .51. .54, and .57 MHz on the 2-meter tiand. Local-option simplex channels arrd Irequenctes adfacent to the above that do not violate the Intent of tt>e contest rules Of the spirit arii^ intent of the band plans as recommended in the AH fit Repealer Directory may b& used for contest pur- poses.
Ail operation must be fixed, portat^le, or mobile under one cat! from or^e ARRL sec- tion. A transmitter used to contact one or more stations cannot be used under any Dttier call during the contest per tod with the exception of famtty stations where more tfian one call is assigned to one lo- cation by FCC/DOC. Also, one operator may not give out contest OSOs using more than one call sign from ar\y one lo- cation.
Only OTM signal per bartd at any given time fs pwmitted, regardless of mo<te. While no minimum distance is specified for contacts, equipment should be capa- ble or real communications (i.e., able to communicate over at i^isi « mite). Multi- operator stations may fkCA lr>clu<ie QSOs with their own operators except on fre- quenctes highaf than 2^ GHi. Even then, a complete, different station must exist for each QSO made under these condi- tions.
Abom 300 GHz. contacts ire permitted for contest credit only belwean licensed amateurs of Technician class or higher using coherent radiation on transmlsaJon (e.g., laser} and employing at least orve stage of e^lrontc detection on receive.
73 Magazine * June, 1M4
EXCHANGE:
fiame o( section, VE province, or OX country. Must he acknowtedgad tiy t>oth operators for credit by either.
SCORING:
Cotint €ne point for sacti {^xnpiete 50- or 144-MMz QSO. 2 points for each 220- or 420-MKz OSO, and 3 points for eacti 1215-MHz and above QSO- Crosstmnd QSOs ^ not count.
Muitipiiets count onoe per t>and: each ARRL section In the contlgyous 48 slates f63 maxX eacti Canadian province (max. 12), and each DXCC country (excluding W and V^.
REPOHTiNG:
Entries must tie poatmarlted rw lat^ than July 1 1 ih and s«nt to the ARRL Head- quarters in Newington CT 06111. Official entry forms ara available from the same address for an 5AS& Usual ARRL disqual^ Itication rui^ apply, Usual awards to top scorers in each ARRL section, some limit- ed to wtiere signiticani effort or competi- tion is evidenced, MuitI -operator entriee are not eligible for single-band awards.
SUMMER SMIRK PARTY
Starts: 0000 GMT June 16
Ends: 2400 GMT June 17
Tht contest is sponsored by the Six- Mater International Radio Klub (SMIRK]. No cro^aband contacts, mult I -operators, or partial contacts are el lowed Check logs or dupe sheets are not needed.
EXCHANGE:
SMIRK number and ARRL Section, for- eign state, pfovirv^, prefecture, or coun- try. Count ARRL sections in the 46 US Slates only; KHfi and KL7 count as coun- tries. Washington ^ counts as a section as well Canadians count as provinces, aft others count as states, provinces, prefec- luras* or countries.
SCORtNQ:
Count 2 points for each SMIRK contact. 1 point for non-SMLRK QSOs. Add QSO points and multiply by numter ot ARRL secttons, foreign states, provinces, pr*^ feci u res, or countries worlced for linat Bcore.
AWARDS:
Certificates for high-scon'ng SMIRK In two divisions: US/Canada arwl foreign. Certificates for high score in each ARRL section arid foreign state, province, pre- rectur»f or country,
ENTRIES:
Entries must be sutimttted on the fail. 1»eit edition of the official SMIRK log. Single copies are available for an SASE and photocopies may be used. Send tog rec^uests and entries postmarked by July 8th to: MarX S^ Anderson WB5NPK, 8932 Sa^ie Trail, San Anto^^io TK 7B2S5.
ARRL FIELD DAY Starts: 1600 GMT June 23 Ends: 2100 GMT June 24
sponsored by the ARRL, the contest is open to all amateurs in the ARRL Field Or- ganization plus Yukon and HWT. Foreign ttations may be contacted for credit but are not eligible to compete. T?ie ob|ect Is to work as many stations as possible Under less than^ldeai conditions. Oper- ating times are limited da pending on your operating class: CfiecK rules below.
Entry categories are classified by the maximum nurrt>er of simultaneous trans- mitted signals fallowed hy the designa- tion of the nature Of tha Individual or group participation. Below 30 MHz. a transmitter must femain on a particular band for at least 15 minutes or^ce used for a corttact on tlut band. During this tS-minute period, the transmitter is con- sidered to be transmitting a signal (ev^n if it Is not) for purposes of determining transmittif class. Switctiir^ devices are prohibitedL
Class A consists of club and FU>n-c1ub portable stations specif I caliy set up for Field Day. Such stations must be located In places that are not regular station toca^ tions arid must USS no faciiltles Inslailed for permanent station use nor any struc- lurea instated pemiar^ntEy for FD use^
CALENDAR
Jun 9-11 Jun 1&-17 Jun 23-24 Jul I Jul7-« Jul 1^15 Jul 14-15 Jul 28-29 Aya4-&
Atie 11-12
Aug 18-19 Aug 24-27
s«pa-9
Sep 15-17 Sap 23-23 Od f-7 Oct 1^14 Oct 20-21 Nova*4 H0« 17-11 Dae 1-2 Dae a-9 Dec 26-Jin 1 Dec 30
ARDL VHF QSO Party
Summer SMIRK Party
ARRL Field Day
Canada DayConl««t
YV Independence Worldwide Corrtest~S5B
AS Internatlonsi SSTV-OX Contest
tARU Radlcwport Chsmptonshlp
YV Independence Worldwide Contast— CW
ARRL UN F Contest
Kiw Jersey OSO Party
SARTQ Worldwide RTTY Contett
A5 North Amertctn UHF FSTV^DX ConlnBt
ARRL VHF QSO Party
Wafrhtngion Ststa Q$0 Party
Lata Summer QRP CW Acthrily Weekend
ARRL QSO Ptrty-CW
ARRL QSO Party— Ptwne
Jamboree On ttie Air
ARRL Sweefutakn^CW
ARRL S weepatakea ^Phpfla
ARRL 160-Meter Cofktasl
ARRL1(^M«terC0ftta«t
QRP Winter SportS^CW
Canada Conteat
Stations must tie operated under one caii« sign and under the controi of a single li- censee or trustee for each entry. All equip- ment (IfKluding antennas) must lie within a aoo^meter circle. All contacts must be made vtiih transmitters and receivers op- erating Independent of commercial mains. Entrants who, for any reason, operate a transmitter oic receiver from commercial mains for any contacts will be listed separately at the erid of ttieir class.
Any Class- A group wtiose entry classifi- cation ]a two or more transmitters (non- Novice) may also use one Novice/Techni- cian operalirtg position (Novice bands on- ly) witfwul changing its basic entry classl- flcatkm. This statiw (including antennas J should be eel up and operated by Novice and Technician licensees and should use tha cailsign of one of tlieae operators.
Class B consists of r>on-club portaJ?ie stations set up and operated by not more Itian two licensed amateurs. Other provK Sionfi are the same as for Class A.
Class C consists of mol>iia stations in vehicles capable of operation while in mo- tion and normally operated In this tn&n- fwr, tncludir^ antenna. This Includes nrwrttlme and aeronautical mobiies-
Class D consists of stations operating from permanent or licensed station loca- tk>ns using commercial power. This group of stations may only count contacts made with Glass A^ B, C. ar>d E Fl«ld-Day groups for points.
Class-E stations are the same as Ciase D except they use emergency power for transmitters and receivers. Tfiey can work stations in ail classes- Operators participating tn FD may r^t contact for point credit the FD portable Station of a group with which they partici- pate. Any statiort used to contact or>e or more FD stations may not be used under any other caif during tt>a FD period, ex- cept for family stations.
Each phone and each CW segment la conslcSered as a separate band. All voice contacts are equivalent, arwl RTTY/A5CII Ls counted as CW. A station nnay be worked or^e on each t>and — crossband contacts are not allowed. The use of rnore than one transmitter at the same time in a single band is prohibited, eiccapt that a Nov- IceH^echnician position may operate on any Novice band segment at any tim& No repeater contacts.
EXCHANGE:
Stations in any Af^RL section send Fleld- Oay operating class and ARAL section. A fouf-transmltter station in NJ wouid send **4A r4J". Foreifin staiions aend BS(?) and QTH.
SCOPtiNG:
Scores are based on ttie numt>er ot valid contact points times tr>e multiplier corre- sporKJlT>§ to the tvighest power used at any time during the FD period, plus bonus points. Ptione contacts are one point each, CW counts two points each. Power muftipilers arec & for uaifftg a dc Input pow< ef of low (20 W PEP) CM- less tor S-W 6c out- put/10-W PEP output) and if using a power soun^a other than commercial mains or motor^f riven generator; 2 for using a dc irv put power of 200 W or less on CW and 400 W P£Por let« on SSi; 1 for using anything higher.
Batteries may be charged while ir^ use for Ciass-C entries only. For other classes^ batteries charged during the FD period must be charged from a power source independent of the commerciaJ mains^
Bonus points will be added to the score (after the muitlpller is applied) to deter- mine the tinal score. Only Class-A and Qlass-B Slit ions are eiliglbJe for bonittes:
i
I
1) fOOV* fm*fywicy Poww— 100 points per tranBmttter for 100% emerQency power AH equlpmant and facUtties at the R> site must be operated from a sottrca Indepemlent o( the oonvnercls] mains.
2) Pubffc Rsfatfons ~-iOO points for pub- lic relations. Publ Icily must b$ obtained or e bona fide attempt to obtain pubilclty must be m^de, or oparat^on must be con- ducted from a public f^iace tsuch as a shoppir^g c«nt<f). Evicfeiice must be sub- mitted In the form ol a clipping, a memo from a BC/TV statlor^ that publicity was given, or a copy of material that was sent t&n&wf^ n>edia for publicity purposes.
3} M9ss&g& Offpfft9Hon—^00 poim« fw origination of a message by the club presh dent or other FD leader, addressed to the SM or SEC^ stating tfie club name (or nor^ ctub croup^. numt^ei of op&raiofs, field tocallon, and numt^er Of ARES members parti ci pat i rig. The rneaaage must t>e tran^- mitted during the FD period and a fuliy^ serviced copy of It must be Included with 11^ FD report. The friessage must be in standarti AHftL message form or r*o CfMit will be gfven,
4} Mess&g6 Repty~1Q points for each message received and relayed during the FD poriodL up to a maximum of 100 points. Copies of each metaage, property ««r- viced, must be incJwIad with tlw FD report,
5) Satellite OSO— 100 points can be earned by completing at least or^e OSO ¥ia satellite dufing the FP period^ The ra^ pealef pfovision is waived for sateJUte QSOe and a satellite station does not count as an additional transmitter. Show sateiJJte QSDs as a separate band on the summajy stieei:.
6> Naturst J^onver— FD groups mahir^ a minimum of 5 0S03 without using power from commerclaf mains or petroleum de- rtvatives can earn 100 points, ttils alterna' tlva powef source also includes batteries charged by natural means fnot dry cells). The natura^^wer station counts as an additional transmitter. If you do not went to change your entry class, take one of
ioSomt
NEWSLETTER OF THE MONTH
Tlie North Rorlda Amateur Radio Society's Balanced Modulator la coo- aistentiy one of the best club publications In the nation. In addition to lively editorial commentary and very comprehensive ham news coverage, BM al^o in- cludes Pete NIssen W4PTT's weii-dof» "DX and Ottwf Stuff" column. Two Otlter features— unique and valuable — bogan with the March Issue; a MQFAF^ mem- bef business and services directory and NOFARS assistance ar\d aiivice net- work llstinga. Congratulations, President Biiiy Wlliiama N4UF and all NOFAflS members I
To enter your club's newaittter in ZJs Newsletter of the Month Contest, send It to ?3. Pine StrsAt, FelerbonHigh HH 03458. Attn: New&iettef of the Month.
your other transmitters off the afr while making the naiufal-power OSOs. A sepa- rate list of natural -power QSOs slioukl t>e #n€losed w^th your entry.
7) W1AW Message— A bonus of tOO points will be earned by copying a special ARRL FD buileiln sent over W1AW on tts reQui arfy anr>ourvced frequeficies just Iwfore and during FD. This rn^tsafp can be received directly from W1AW or by any relay method. An accurate copy of the re- ceived massage should be included In your FD report
REPOBJINQ:
Entries must tie postmarked by July 24th; no late entries can be accepted. A compiete entry consists ot a summary sheet and a Usi of atattons worked on each bandAnode during FD, plus bonvs proof. The fist of stations wodted on each band or mode may take the form of official ARRL dupe sheets or an alphanumeric Jlsiing of callsi^jins worked per t>and and mode. This tist may 'be computer-geflfif* ated IrKiompiete Of iileigible entries will tie classified as check logs, A copy of FD logs should be kept by your FD group but should r^t be sent in unleiss specifically
requested try the ARRL Ngrmai ARRL dls^ qualifications rules apply.
All entries atvd requests for official fom?s should be addressed to: AfIRL, Newlngton CT 06111. include a 9" by 12" self ^addressed envelope with 3-oi, post- age for a complete Field^ay entry package,
CANADA DAY CONTEST
Starts: 0000 GMT July 1
Ends: 2400 GMT July 1
Sponsored by the Canadian Amateur Radio Federation (CARF). the contest Is open to all amateurs and everybody works everybody, Entry classes include single- operator, all bands; singie-operatorr stngle t>and: ar^ mu it i -operator, all bartds. Tb^^ are also separate singieKipefator ORP (5-M output} classes for all bands and single band.
(Jse ail bands from 160 to 2 meters on CW and phone combined. All contacts with amateur stations are valid. Statiorts may be worked twice on each t>and, once on CW and once on phone. I^o crossmode contacts and no CW contacts In the phona bands are allowed.
EXCHANGE:
Signal report and consecutive serial number starting with 001. VEI stations should also send ttieir provirvce <NS, NB. PEJ). Do not use a separate series of nurrv berson eacli bantL
SCORtNO:
Score 10 points for each contact with Canada. 1 point for contacts with others. VEI counts as Canada. Score lO points for eacti contact wttn any QARF official station using the suffix TO A or VGA. Multl^ pliers are the numtier of Canadian prov- Incea/territorles worked on each band on each mode (12 provtnces/iefritories x 2 modes for a maximum of t92 possible multipliers). Contacts with stations out- side Canada count for points but not mul- tipUera.
fR£QU£HaES:
leiO, 1S40. 3S25. 3770. 7025, 7070, 14025. 14150. 21025. 2!250, 28026. 2B500. 50.040, 50,110, 144.090, 146.62. Suggest phone on the even hours (GI^4T>, CW on the odd hours {GMTl. Since this is a Qanadiafi- spoftsofed contest, rememtjer to slay within the legal frequencies for your country!
AWARDS:
Certificates will t>e aw^ardad to the high- est score in each category in each prov^ ince/territofy, US call area, and DX courv try. ff scorea are close, second- and third- place certificates will be awarded. Addi- tlor^lly. several trophies wiU be awaided to some top scorers courtesy of sponsors,
ENTRiES:
A valid entry must contain log sheets, dupe streets, a cover sheet showing claimed QSOs, OSO points, a list of multipliers, and a calculation of firtal ctajmed score. Cover sheets and mufti pi lef checklists are available. Entries should be ma I fed within one month of the contest, with your com- ments, to: CARF, PO eoK 2172, Stn 0, Ottawa, Ontario^ K1P5W4 Canada.
Results will be pvt>iished in TCA, (tie Canadian amatetir magazine. Norvsuty scrjbers may include an SASE for a copy Of the results.
^
DX
Chod Harris VP2ML
Box 4831
Santa Rosa CA 95402
THE NCDXF 20 METER BEACON NETWORK
Have you been llstenlrvg on 14100 as I suggested last rrvonth? it not. tune youf re- cejiver to thai frequency as you read the column this lime.
What do you hear under all that Interfer- ence? A strar^^ pattern of CW signats and lor^g daafies from stations ail over tr^e worfd. This Is the 20^n>etef t>eacon net- work, constructed by the Northern Califor- nia DX Foundation {f^CDXF).
TTiis network consists of efght auto- mated beacons scatt^ed around the globe. Eacfi beacon transmits on a strict lime sequence {see Table IJ.
The beacons provide current Informa- Iton on 1t)e state of the Ionosphere and on radio propagatton to various parts of the
world, all In less than ten minutes! Let's have a closer look at this network to see how we can use it to best advantafle.
The Baacone
Each of the beacons consists of a power supply and controller, a Kenwood TS-ISD transmitter, ai>d an omn^dlrectiorv al antenna. The controller features a quartz-clock accuracy of one part in 10.000,000, a microprocessor to generate the beacon CW identification, and a switch- ing network to reduce tt>e power of the transmitter in ID-dB ste^.
Till a power reduction Is one of ttre most fascinating aspects of the t>eacon sys- tem. During Ifie 58 seconds that each l^eac^n transmits, its output power drops by a factor of 10 every ten secofKls fsee TabJe 2). The final S-second-fong dash, preceded by four dHs, is sent at the power level of only 0-1 Watte t And yet you can hear the 0.1 -Wat! level from several of the beacons.
A Kenwood TS-130 ir&nsceiver and a quad antenna comprise thie rest of the beacon. The Kenwood transceivers have held up very well under the continuous- duty operation of tl^ beacons; no beacon has ever been off the air for tfansceiver prol>lems. The antenna is a turnstile made of Iwo quad loops at right angles to each other. This antenna produces an antenna pattern practJcally omnidirectional In the horrzontal plane, and with the pattern fa- vorinfi ^ow-angle radiation in ttie vertical
0000 4U1UN
0001 wewxm
0002 KH60/B
0003 JAZtGYB
0004 4)t6TU/e 0CH»OH2e 0006 CT3B OOOr Z56DNm
oooa-»
United Nations. New York City
Stanford Univefsity, Palo Alto. California
Northeastern Oahu Island, Hawaii
Mi. Asama. Japan
Tel Aviv University, Israel
Helstm^i Technical University, f^nJand
Madeira Island, Africa
Transvaal, South Africa
(silent)
TMbimf.
plane. Each side of the quad loops is IT' 1 1 ' long.
Each tieacon package, including anten- na, costs about Si 300. The Nortt)«fn Cali- fornia OX Foundation is picking up the tab for this entire pro|ect, including tf^ eight beacons in place, and future tMSCons (see below).
Btfiind tfte Beacons
The network fa I he brainchild of Stan- ford Research Institute scientist Dr. Mike Vltlard W6QYT, who has had a long time Interest in worldwide radio propagation. With the support of the Northern Gal I tor* nla DX Foundation and the active assis- tance of several San Fraricisco Bay area amateurs, thna network began to take shape In the late TOSp
Dava Lesson W6QHS took some time off from hrs multimj J [Ion-dollar Silicon ViJiey company to design tt>e ftecessary hardware. His contritiutlon included the overall design of the network along with the details of the switching system to change the power level of the trans mi tter< Jack Curl is K6KU designed the clock and microprocessor which control tt^e switch^ Ing circuitry and generate tt^ code Identii* fication. Jack has had considerable ex* perience In this field; he's the Curtis of the Curtis keyer and code-teacher line! And finally Cam Pierce K6PU assembled much
73 MBgailne • June, 1984 IT
of th« Acm»r hardware and fKepared th« actuil boacofi packaQOS, NCDKF Pres^* dant Jack Trostor WSISQ provldad (and Ts continuing to provide) overaM coordina- tion and Intemailonal supervision of th« JWtworH,
And contmu^ng on duty On a dalh^ bast a l9 Al LoUe W6HQ, who c«ffdifH>te& Ihi regular obsorvQfS of the beacons and complies I he raporta (see below}^
Amonfi the other person^ vltat to (ha aucceas of the beacon network are the in- dividual &e3^>n "cuatodians." These are the hafFis arvd gro4jps^ carefully selected by ttie NCDXF, to set up end operate the l>0aGons. In many cases the beacona are unde/ the auapices of a unlvefslty.
The beacons netwoilt grew afowly; the llTit beacon, WBGZNL went on the arr at the end of 1979. WB6ZNi tias changed callAlgns a couple of times since than ami Is now WaWX/B at Stanford University In Palo Alio, CallFornta.
That tlrat tseacon required mo^e tttan hantwaia. The t»acon transmit} what la technlcalty an unatlefided AO emlaakif^ whidh la not permitted under Fedw^l Communications Commission ^FCC) amateur rules. So the foundation had to request a special waiver of the FOG rules to aJlow ttie beacon to tMgin transmitting. The aame held tnte for the Hawaiian beacon, KH60/6, under I he watchful aye ol Bob Jonea KH60, Perry Willlama W1UED of mo American Radio Relay League's Washington DC office was Irv stmn>ental in obtaining the necessary waivers.
On trie other hand, the other beacon located "wtthln^' the United Slates re^ quired no such apectat permlsston. The 4U1UN beacon sits on UN territory In New YofK City and thus falls untfef the rules of the tntematlonal TeJecommunJcatton UMpn, whictt pem>its the beacon.
The situation was. a^en mora compflcat- ed in Japan. Japanese amateur regular tlons had neither rules nor standards about beacons. In order to get permission to estatsjish ttie t)eaoon ^n Japan, J A hams had to work with the licensing authority to writQ enUrgfy new wgufaTions for beacon standards.
Perseverance prevaHed, however, end by early 1983, ail eight beacons were on the air. The beacons' record of depend- ability has been very good. Some of the beacons associated with ynhwrtitfea mil St occasionally ^ut down to avoid dis- turbing deticafe experiments. But there has bean little u-r^scheduled "downtime" or> the system. The only recurring pfdi&lem was a SingJe resistor in Ihe powef supply, aince replaced. The natwotk's on-time IHOnl Is a great tribute to the dos^pi, englrieering, and maintenance of the beacons.
The vefy dependability of the t>eaoons has ted 1o one slight problem: ttie docks of the tMacons atowly drift, and the bea- cons start to ovoriap. The clocks in Ihe beacons are accurate to about one part In ten mElllon, or eix>ut one half second a month. Since Ihe beacons have required no nwlntenance other than resetting the docks, ttieir llmers have occasionally drtftad enoo(^ to omdm?. So If you want to aat your watch by a radio signal tune to WWV (sea this column, April, 1@B4^.
Ualiili the Beacons
TtiaM beeoona, Ixvth IndMduaIfy and m a network, provide many benefits to the DXer. Besides tt>e obvious use ol deter* mining band openings, hams can use Ihfs syatem to check antennas, compare rigs, caiibrate thetr S-meters, and compute toivina patterns. Let's look at some of these possibJIUIaa.
Stnoe the tieeoorts put out tf>e same
At Loti^ W6RQ coardffiams the beacon reports from this mod&st station.
power day after day, you can use the beacon network to monitor the condition of youf station. By loggEng the signal strengths of the different beacons at vari- ous times of the day, you can build a refer* ence point for changes in your station. For eixampJe, if your coaxial cable t>egins to deteriorate, you might notice a gradual reduction In the signal strengths of ths beacons. Simifafly, changes in switches, filters, and rigs can tie compared to the refer ences you establish tiy consiatentty monitoring these beacons.
Such conatstent rr>onftoring Is itrrpor* tant if you went to siiminale the vagaries of propagation from your considerations. You don't want to rip out a rww antenna Just because you tested it on ttie day of a sojar flare!
Vou can also use the beacon network lo ctieck Ihe iow-arvgle radiation patterri of your antenna. Since most of the tieacons are a goodly distance from your station, most of the radiation you hear from them will arrive at your antenna at the low angle characteiistic of DX communicatCona, By swinglrvg your antenria durlrnj the long, 9-second dash of each beacon^ you can note rslative signal strengths from the front and the back ol the antenna. You may find the ratio between t}>e3e figures quite different from thai advedlaed by the antenna manufacturer I
C>f even greater Interest to the DXer wtti be the angle of minimal reception on the antenna. Beam or directional antennas do Increase the signal strength in a given di- rection, but they also sefve an even more valuable service by reducing the signal stTBngth^ pf stations lying In other direC- tions- The ability to "null out'* or nullify an imerf er I ng station is at least as important as Ihe increased signal strength given by ttie dIrectEonal antenrta.
So ttie DXer wants to know where to point Ihe tream to mfnfmiz^ reception of the offending signal. Knowing where the nulls are In your antenna pattern Is as im- portant as knowEng the front -to-back ratio.
Another immediate benetii of the NCDXF beacon rvetwork ie Its use f^or S-mefer callbfation. The power lever of
Power Level
too Watts too Watts ID Watts 1 Watt 0,1 Watt 10C Watts
ftleaaaoa
QST d« [callaHjn)
eadi beacon decreases by a factor of 10, or tiy 10 dS, each to seconds. You can cal- ibrate your $-metef t>y careful ty watching the meter during these power changes. Your meter reading should drop by 10 dB (a little less than 2 S-unlts) each step m power reduction.
tf ycKif receiver doesnl track this way, you might want to produce a calibration chart to reflect the actuai power levels.
And, of course, Ihe beacons teli what Is happen ir^ with radio propagation right now. How many txiacons can you hear? How strong are their signals? How do these signal strervglhs compare to other days when the propagation was good, me^ dium, or fair?
Beacon report coordinator Ai Lot^e W6f^0 feels that lt»e beacons present a tnore accurate picture of present amateur- radio propagation than do the WWV btille- tins or the forecasts by charts or tables in the amateur-radio magazines. "Those charts don't Include the A Index'' (see this column, last month), "Their Maximum Uaabte Frequency charts only rafted solar flux. But I have found the A inde^e a more telling indicator of present propaga- llon," A I explains.
How can the DXers best use thi$ propa< gallon Information? First, lieacon recap- tkma might suggest good possit>{litiea for direct lonal COa. If you knttw the tiand It open from your tocetion to Eastern Afhca (CT3) you might try a CQ directed toward that 0mB. DX stations are much more iike^ 1y to answer a dtrectlonai or specific CQ than a more general "CO DX. '
With regular lislenlng. you Can team a great deal about radio propagation from your station to other parts of the worlds When ck>es the long or skew path open up to Curope^ or to Japan? in which direction dOM II p&tkl What are the dlfferefices in sigrial strength as dawn or sunset pasaes? Wfien is the t>est time to get up In the middle of the night to work that rare DXpeditlon?
The avid student of radio propagation can use the tieacon network to obtain even more information. What is the rela- tionship Cietween ttie WWV flux numbers
|d-second dash) . {S-aecond dash) _ (^-second dash) ^(9-secorid dash)
SK (call sign)
TM entire esquene* meaa about 56 seconds^ at about 20 words per minute.
Tabf9 2. 8eac^n transmission pattam.
and propagation from your location? Do the sJgnif strengths of the polar and the equator I el paths change at the same tlrne^ or In different patterns? The possibilities are endless.
Making Beacon Reports
If you are serious about itttening to the bMCons, you might want to share your ob- servations and ideas with others of simi- lar p^reuas Ion, Beacon report coordinator Al Lotze W6R0 (see photo) collects the m- ports from regular and irregular reportera from all over the world.
As of last winter, Ai had received more than 250 reports from every continent. The reports have ranged from a simple, ""I heard your beacon yestarday/' to com- plex and detailed analyses and tlieort^ ol propagation. The most dedicated are aev- eral European scientists. At least one Bel- gian amateur sends in a full page of com- ments and Ideas every month! Other regu- lar reporters Inctude er^gineers and short- wave iistenera fSWLs). The list of report- ers shows that you don't need fancy equiprT>ent to monitor Ihe beacon net* works; Al has received a report from a Czechoslovaklan amateur who used a di- rect-conversion recalvefl
Amateurs ar^ others fnterested In tie- coming regular n^onitors and reporters for the beacon network should contact Al Lotze W6R0, 46 Cragmont Ave., San Fran- cisco CA 9411 & 1303. Al prefers the of- ficial reporting form but will acknowledge all reports with a beacon network QSt. You don't have to hear all eight e»escona to send in a report, but you should listen to the network several times at different hours and note any patterns.
The informal collection o! regular tiea- con watchers spends more time listening than tttey do transmitting pike any good DXerl) tKjt ttiey do occasional ty key up their rigs during the 2-niinute "break" at the end of each sequence of tjuileiins. if you listen closely during this "off" time, you might hear a beacon observer send "All 6 hrd de WSRO;* or a similar mea- SHOf^
Al Lotie WSF^ flaport CoonNnator
A I Lotze ia an excellent man for the Job of coordinating these l^eacon reports, in his 53 years as an amateur. Al (see ptMMol has amassed 282 countries on CW His station today Is as efatiorate as any he has used In more than 50 years, but you may note the absence of such Items as an antenna switch, antenna rotor, or am- plifier.
Al runs Kenwood barefoot through a Johr^son matcht>ox to a QSRV antenna on the roof of his home, high on a hill at>ove San Francisco. Al cleims his DX success comes from his suffix. "There are more stattona with the suffix RQ In the DXCC listing than any other suffix," Ai notes with a twfnkie In his eye. Despite this sim- ple station setup. Al has frequently heard all eight t»eacons in one cycle, especiatCy around local aunsai when the A index Is under 10.
A ior^iime folloviw ol radio propaga- tion, Ai monitors WWV proptgadon byite- t^ns daliy^ Wiaather permitting, Al also sets up his telescope every day to chart the size and position of each sunapot. I^is charts appear in ORZ DX every week,
Al mainlalns lively communications with his Far-flung collection ol regular iMacon reporters. Wittv a working co>ffK mand of P ranch, Spanish, and German. Al attempts to respond to most reporters in the If native languages. With daily charts of the sun*s surface for years, careful gmphing of the WWV propagation infor* mation, and more than 5Q years of ama* teur experief>ce, Ai holds his own among
96 73 Magazine • June, 1984
he prof BtftlonAl propAQailon «xporta with vtiom ria corresponds.
teeuitt oH Beaoon Network
The Informetlof) fro«n t\w beacon «retchers continues to pour Into AJ't 'nallbox, ao it will be years before any statbtlcaiiy valid reauits come from this network, &ut Ar has noted severaf trends whkrlT became evident vsry quickly. The first, and pertiaps rnoat interesting pat* lern, la how the low-power signals can be heard ciesfly. QRP enthusiasts have been •aying this for yesis: y04J don't need power to make DX con t acta. Uaten for yourself to hear how often you can hear the 0,1 -Watt ievei of me beacons. Makes one want to ban afi smpiif iers.
Another interesting conclusion aug* gested by the beacon network is that the
traditional explanation of how radio waves travel more than 2500 miles ts wrong. The teid books claim that sigr^a^s which travel farther than 2500 miles must bounce back end forth tietween the Earth's surlace and the Ionosphere sever- al limes: multi-hop piopagation. However, much of the signal la lost In each bounce. The mathematics of this tt>eorv suggesi that the 0.1 -Watt tieacon wotjld never be heard If the signal were to propagate via muUI-hop propagation. So the radio signal must get from there to here in some other way. We may never krow exactly how ttw signal traveis^ but wo do know that trw tra- ditional multi-hop theory has holes In it
Al has also noticed that the A Index seems to be closely related to t»eacon receptions. The only times lie has heard
all e^ght beacons at the same time has t)een when the A index is very low, 10 or less. I^e notes that traditional propaga- tion forscaatlng, including the charts and tables In the amateur press, do not in- clude the A index in their catcu^atlons. Thus even when the solar i\un might be high enoHjgh for good radio, the high A irv dex may prevent good propagation.
The Future of the Nehvofk
What^s ahead for the NCDXF 2«HTieter- tMacon network? The two "off" minutes certain ly sugQest ttiai at least two more tNQacons wiJJ t>e forthcoming soon. in the works for this summer is a beacon on the northern coast of South Am«riea» In Co- lombia. Another pos3lt>tllty for a tenth beacon is the southern end of the South American continent, but the real propaga-
tion hounds prefer a Westsm Australia lo- cation. VK6.
The beacon network doesn't have to stop growing at ten. Built into the control circuitry is the ability to switch to 20 twa- cons per ten-minute cycle. One can Imag- ine a few years from now bieing ahie to gel eKSct propagation intormatipn to 20 dif- ferent locations around tt>e world In only 10 minutest
Thast beacons and many other DX ic- tiviUes, Including ma|or DXpeditions. are sponsored by the Northern CalitornJa OK Foundation. Memtiefship In the NCDXF Is $10.(X> and Includes a handsome membker- ship certificate. Contact hiCOXF ai PO Box 2368, Stanford GA §4305.
And pJeas«, for thte sake of ail of those hams listening to the beacons, stay oH 14100 kH2l
MAROS
I
Bttf Gosney KB7C
MiCfo-80f Inc.
2665 North Busby Road
OfiA Harbor WA 98277
ELMER OF THE YEAR
F^ Wendetl Tjetsworth WZSUE was Cfl01»n as OCWA'a Korthem New JefSey Chaptsf's 1963 Elmer of the Veer from a fiefd of nc^nlnees by a committee which in* ctuded such pron^ner^t local amateurs as JOttpH Winter W28HM, head of the W2 oat Bureau, and William Mumford W2CU.
W2SUE has been teaching ham-radio courses s^nce 1966. He currenhy Isschfts r^iovlce classes at the Nut ley H4 Bed Cross Building and is active In Amvy Mars as AAJQJR
SOUTH EAST QUEENSLAND TELETYPE QROUP AWARD
TMs award iA opvi to all transmitting and listening amateurs who gain award points in the following manner Australian amateurs must score 5 fx?lnts and over* s«as amateurs mast score 3 points.
{a^To qualify, a station must, where possible, copy the official station ot the South East Oueeniiiand Teletype Groupi, VK4TTY, during a news broadcast snd, in the case of a transmitting amateur, partic- ipate in the calittack (2 award pointsK A portion of the printoirt of ttie news txoad- cast together with the date, time, frequen- cVh and broadcast numt>er are to accom- pany the request lor the award,
(b) Add! ti orally, a transmittif>o amateur m^jst work three memtier statioris of tt» SEQTG on RTTY {1 point each}, t-og fix- trads arxl/or printouts are to be Included with the award application, and each membei* station may be counted only once towards the award.
{c) Listening amateurs should* in lieu of fjb). forward log extracts and/or printouts of three contacts involving different mem- ber stations of the SEQTG (1 point each).
Applicants for the award sfiould for^ ward the abovo information together with one dollar Australian or 5 iFTCa, to cover postage and printing costs^ to the Secre- tary, SEQTG. PO Box 274. Sunnybank, Queensland 4109, Ausiratia.
WORKED ALL BERMUDA
Th* WAB Award is issued to amateurs throughout the worid by the f^dio Society
of Bermuda. To qualify, applicants must subfiiit proof of havtriig wtKked a mlnl^mum of nine {%) parishes in Bermuda: Sandys, Southampton, Warwick, Paget, Pern- broke, Devonshire, Smith's. Hamitton, and St. Georges.
The award la an antique map of Ber- muda (20" X 23") suitably inscribed with the recipient's name ar>d celts I gn and signed by His Exceller^cv the Governor of Bermuda.
The award Is not aval I able lo stations whio worthed Bermuda via nrvot>4le in- cluding maritime or aeronautical No t>and or mode endorsements are avail- able. Only orve mobiJe or portable from within Bermuda may ba used In mailing claimed contacts on your applications.
QSL cards are required as proof of con- tact and tf>ey must tie seni to the awards manager with sufficient postage for their safe return. The Bermuda Award Is issued free of chargel Submit your applications to: Award Manager, PO Box 275, Hamilton 5, Bermuda.
WORKED BROWARD
COUNTY crriEs
Th« Broward Amateur Radio Club, inc.. Sponsors the r>ew WBCC award, available to licensed amateurs who submit prool of two-way contact as foHows:
(a) Residents of Broward, Colllerg, Dade, GJades, Hendry. Lee, Martin, Monroe, or Palm Beach counties must work all 29 of the cities listed below.
(b>Aii other amateurs must work 15 of tt>e 29 clll^ within Broward eounty.
To be valid, all contacts must be verl^ fled by at leaat two fellow amateurs and application must show all logbook lnJr>r- mation as well as ihe OTH of ttm station worKed.
To apply, mail your appi I cation with $1,00 (US funds} and two first-crass stam|>s (DX stations send 10 IRCs) to: BARC Award Manager. W04RAF. 1921 NW 41st Street, Oakland Park FL 33300.
Qualifying city contacts Include: Coco- nut Gre«k. Cooiper City, Coral Sidings, Dan I a, Da vie, Deerfield Beach, Fort Lau- derdale. Hacienda Village, Ha I lands la, Hiiistxjro Bdat:h, Hollywood. L^uderda^e- tiy-the-Sea, Laudefdaie Lakes, LaudefhIII. Lazy Lake, Light house Point, Margate, Miramar, Morth l^uderdale. Oakland Park, Parkland. PemtKOke Park, Pembroke Pines, Plantation, Pomps no Beach, Sea
Ranch Lakes, SunrlsSt TamaraCt and Wilton Manors.
WORKED ALL ASIAN AWARD
The WAAA program requires the appli- cant to work other amateurs in the mem- ber countries of the Association of Souths east Asian Nations. Work 5 Philippine contacts, 1 Malaysian contact. 2 Indone- sian contacts, 1 in Thailand, and 1 station In Singapore, Special endorsements will b& Qivon tor All -Phone, All-CW, Single- Band, and Five- Band contacts.
Have your ilst of contacts verified by at least two radiCHClub officials and t»e sure all contacts were made after January 1, 1070. to be valid. Forward appropriate log- book information In your application along with S4.D0 (US funds onty, no IRCsJ to the Award Manager Edwin Zambrano 0U1EF2, PO Box AC-166, Quezon City 3001, Philippines.
WORKED ALL DU AWARD
This award is available to alt licensed amateurs who can show proof of having contacted at least one station from each of the call areas in itie RefHjbiic of the Ptiiiippines (DU1 to DU9, except DUS).
Contacts may b& made on any band or rrxxje and special endorsements will t>e issued upon requ^t for AlhPiione. All- CW, Single-Band, ot Five-Band accom- plishments.
Contacts for the OU Award must be made on or after January 1 , 1070. To apply, forward a list of contacts which have been verified by two officers of a radio organi- sation. Your application must show 9>lt logbook information for each contact. Send the list and S4.O0 (US funds only— no iRCs, please!) to; Edwin Zambrano DU1EFZ. PO B03( AC- 166, Quezon Cily 3001. Philippines.
VK1 ACHIEVEMENT AWARD
The A.C.T. Division of the Wireless in- stitute of Australia Is proud to announce the creation of its newest award, the VK1 Achievement Award. Tills award has the aim of Increasing interest In the VKi pre- fix and in promoting Canberrs and Austra- lia International I y.
As there are only 300 VKl licensees, the award will rwt be sn easy one to achieve, particularly on some tiands and modes. The VKl Award is aval I able to licensed amateurs throughout the world. To quaH- ty, stations within Australia must work 20 stations In VKl land on HF and on VHF. Stations outside Australia must work a minimum of 10 VKl stations for the HF segment of the award.
To apply, submit your fist of contacts, Ifwltiding the GMT time and date worked.
the tMfid ftnd mod« of operation. ar>d any rafSOfts or cipher?^ est changed. To t>e valid, all contacts must be made on or after Jan- uary 1, 1970. Endorsements may be given at the time application is made. Five IRCs or S2.0Q in Australian currency cover the cost of the award and should be sent to the Award Manager c/o WIA, PO Bov 46, Canben-a A.C.T 2600, Australia.
By the way, the VKl Award is also made avaiiable to shortwave listening stations on a heard basis. QSL confirmation is re- quired.
WORKED ALL FORGOTTONIA
Announcing the awards program sporv Sored by LEARC, the t^molne Emergency Amateur Radio Club Of MacomI)', Illinois. The Worked Forgottonia Award is Issued to amateurs who conlirm contact with three 0) licensed amateurs o1 Forgot^ tonia- The Worked All Forgottonia Award Is issued to operators confirming contact wfth at ieast one amateur In each of the sixteen counties of Forgottonia.
What is Forgottonia? It is ihe 51st statef It consists of the following couri' ties (formerly west central Illinois): Adams, Brown, Calhoun, Cass. Fulton, Greene, Hancock, Henderson, KnoK, Me- Oonough, Mercer, Morgan, Pike, Schuyler. Scott, and Warren.
Ail contacts rnust be made after Junft 28, 1980, to be valid From the letter we re- celved from the club, the award evidently Is issued at no charge since no remittance was mentioned. Forward your list of verh fled contacts and a 9" x 12" SASE to the attention of AG9Y. do LEARC, 1224 Maple Avenue. Macomt> IL 61455.
WAT AWARD
The Cabin Fever Radio Giilb of Tok, AtasKa, offers a certificate for contacting tlirae amateurs in ToK. There are no band or mode restrictions. However, at{ corv tacts must be made after Oocemtier 15, 1980, to be considered valid.
To apply, prepare a list ot contacts Tn order by caiisign. Include the name of the station ofMratof, the date and time worked in GMT, and the mode and band ot opefa- tlon. QSLs not required. Amateurs located in Tok Include AL70. AL7BO. AL7BV, and WL7APG.
Send your applleation with $200 or 10 IRCs to: Cabin Fever Radio Club. Box 451, Tok AK 09760.
BASEBALL SPECIAL
The t.ew!sCiark ARC will Ojperate W7VJD Friday, June l. from oaOOZ until the last game has been played, Saturday, June 2. from tOOOZ until last game played, and Sundsy, June 3, from leOQZ until last
73 Magazine • June, 19S4 99
Qams ptay«(l, duHng t^ NAIA Wortd's CollBgtate Baa^ball Tournament, on |h0 campus of Lewis-Clartt Stale College.
Fr«qu«fYC]«s: 14^70, 7.235t 3.940 ± QRM phone; 14.130, 7,125 t QRM QW.
Please send BASE for QSL via Dan Wefb ttrom WB7t.0V. 630 Stewart, Lawlatofl ID 03501.
EIGHTH STREET FESTIVAL
The Madison County Amateur Radio Clyt> w\n operate the ctub station, W9VCF, portable from the historic flghth Street Featlval In Anderaon, Indiana, on June 6 and 9, 1984. A special cert I Hcate will beol- tered to pafsona contacting the club sta- Won [luring [he festival or any club m-enrv ber dyrtfig th« monlh of June. Su-Qg^sted of}efa1ing frequandaa are; 23.7SS, 21 400, T4.340, 7.290, and 3.990 MHz.
Sen^d log Information and a dollar dona^ tlon to: Madison County ARC. c/o Frank M. Dick WA9JWU 921 Isabeile Drive, An- dVBon IM 4«013.
SPECIAL^EVENTS STATION TSKflAC
The Swedish Tetacofnmuntcations Ad* ministration haa given permission to the Swedish Radio Amateur Radio Club lo uee the speciat-events prefix 7SK in OKv nectlon with opefations from tim club sta- tlon. SKftAC. during the annual confer- ence of the European DX Council m Stocks holm, June $-10, 1964. The EDXC is the umbrella organization of the shortwave radio listening clubs in Europe. The an- nual conference has become the meeting friaca in Europe for Intefnatlonal broad* caalefs who are actively involved in pio-
gramming or the technical stde of interna- lionat radio arKJ ttie representatives of tlie tiatenera' clubs, which can now boast iriore Ifian thirty Ifwusand members.
The I9d4 coirlererK^ is being hsotMt try Radio Sweden I ntef national and the Swedish DX Federation at the atudioa of RSI in Stockholm. 7SK9AC will be on the air during the conference, ope^atad by members of the club and licensed ama:^ teura among the conference participants. Among those who are expected to operate from (he station are Victor GoonetiUeke 4S7VK, Colin Richards 9M2FJO, Urs Rooth HV3SJ. Woff Harranth OEIWHC, and Bernt Erf ford LA5TBA.
7SKa AC IS expected to go on the air at about 1500 hours GMT on Friday, June S, 19&4. Operation will continue at various limes during the conference on Seturday, June 9, and Sur^iay. June 10. Frequencies to be used during daylight hours are 14060 kHz tCV^ 14^0 kHz (S3B), 21060 kHz (CW), and 213^ kHz {SSS); and during hour) of darkrva$3, 3550 kH^ (CW} arvd 3700 kHz (SSB1-
The^e will also be some ^seration on the £-met0f band.
MECA
The Macomb Emergency Commynlca- tlorm Associatkvi will i^ave its second spe- del event on the weekertd of June &-i0. O^ oration will coTTwnence at 2200Z Friday, June B, and continue around the clock to Z20DZ Sunday, June 10, near the lower &nA o4 the GenenlK^ass portion of each amatiur band a^ propagation dictates. Modes of operatior^ will be SSe and CWffmY on HF and FM phone on 14ajD7/.S7. OSL to MEGA, Box 488. mica Ml 48087 with a 9' x IZ'SASetorcer- tifkate, DX stations need send only QSL
BROOKFIEtD ZOO
The Chicago Suburban Radio Assocla- lion w^ti operate apecial-event radio sta- tion N9BAT from the Brookiieid Zoc \n celebration of its 5Qth anrtlversary. It Is one of the largest zoos in the United States and was the first America ri zoo to exhibit anin^ia in naturalistic displays behind moats instead of in cages^ Its Tropic World la Iha largest ZOO buitding In 11^ world, houalng African, Asian, and South American rain forests.
Operation wlii be June 9 and 10 froni 16002-24002. using the phone trectUBiV dea of 7.250 arKJ 14.250 MHz. A special full'OOi^ ZGO OSL card will be avallabte to ail slattons that reply with their OSL card and a #10 {business-size) SA5E to: f49BAT Special Event, PO Box 383, Brookfield IL 60513.
KNOX COUNTY ARC
The Knox County Amateur Radio Club will have a special -event station on the a if lo commemorate GaieSburg Raittoad Days. Railroad Days Is an annua t event (or Saieaburg, Illinois, which pays tribute to tile role of the BufKngton Northern (for- merly the CB & Q) and the Sontt Fe RaJI- roads \n ttve development of the area.
The KGARC will have its speclal^event station on the air on Saturday and Sun- day, June d and 10, 1964. from ISOOZ til 22O0Z. The station will operate on one of the foifowing frequenciee: 7.235. 14,280. 2U75, and 28.830 MKz. plus or minus QRM and depend ir^ on band corvditmna. The can of the station will be W9GFD. A special COrrirr^amorative OSL card w^H be Sent to arty Station contacted which sends an SASE to the Knox County ARC, inc., W90FD, 1694 Bluebird Drive, Gales- burg IL 81401
HELEN KELLER DAYS
The Muscie Shoals ARC will operato W4JN8 from 1600-21002 On June 29 and 30 and Juty 1, 1964, from StKing Par^t, Tua- cumbitu Alabama* in ca4ebration of Helen Keilar F^ttval Pays. Phone frequenclas are 7270-7290 and 14,280-14.295. For an 8" K 10" ceniflcate, send an SASE (4" x 10" envelope} to Box 27 45, Muscle Shoaift AL 3S682. Talk-In on two meters, t46-0l/.61.
TOM SAWYER DAYS
The Hannibai Amateur Radio Club, tnc, will issue a fourth annual special certlfi^ cate from tha Nationaf Tom Sawyer Days ceiebretion in Mark Twain's boyhood home town, Hannibal, Missouri, on Satur* da^H June 30 and Sunday, July 1^ 1984. Hours: 1500-2100 UTC Ijoth days. Pre* quonctar phone 7^245, 14^90, 21.400. m770: and CW 7,125 arKJ 21,125 MHz. Help us celebrate!
To receive tfw certificate, send a lifga (B X 10} SASE and your persona I QSL card confirming ^he contact to Hannibal Ama- teur Radio Club, Inc . WaKEM, 2108 Or- chard Avenue. Hannlbai MO S3461.
For further information, cait Tony McUmber, 2108 Orchard Avenue, Han- nibal MO 63401; {314)-S2l^t9!S
ANNIE OAKLEY DAYS
W8UM0, the Treaty City ARA. will oper^ ate the Annie OaKlay special-event station from 1400Z July 28 lo 020OZ July 29. and 14002 to 2200Z July 29. Frequencies will be 3§10 kHz, 7235 kHz, arwl t42&5 kHz. Send 9*' X 12" SASE for unfolded certifi- cate; otherwise send iiO SASE to TCARA, PQ Boot 91. Greenville OH 4S331 .
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i^5«tf Li&t Of Aavetu&ets, on page n4
73 Magazine * June, 1964 101
LETTERS
YES, IT WAS
Was that th« sam« Ishmod Kadyk, the It exploref , who found th« extension of lakt Michigan into Montana?
OH YES HE WAS
lahnood may not hav^ ba«n a fool, bul 1 read up 10 f>^ 224 before I roali^ed ht was ApniJ
Harry Chur^ WtKXP Lsbation IL
ISHMOD FOOLED AGAIN
Tho article on Ishmod's Journal (73, April, 1^4) is onfl of the finest exposes on the potential perils of the OCpedltlon ever wrillen, Reading l( posLttvely started my IIMit poynding with tfie desire to QO rent an old Argofitine alrcratt carrlef^ hire a crew or Lascars and Dacolts, and get out among 'em. There Is, howe^rer, a problem with the map you printed end the geograr- phy of the DXpedition in genei el. Some of my Irregular friends will claim (hat the map you prifited was originally made near Agra by Jonathan Small, Abdullah Khan, Mahomet Sing, and Dost Akbar. In the late 1870a. pthiars will attribute the map to ^ otrtaln ^e^going Bellmen ot the same period, citing Ihese lines {see boK}.
Unfortunaiely, the map is a red herring. Ih^ title location of the istanO ^shmod and hit friends found is, I am afraid, more iilnlster The island whe^e Is^hmod and hi» friends landed can tie none other than the dread Rlyah whict) rises occasionally ffOfn the da/k waters of the South Pacific and Indian Oceans. This [aland was first documented in English by K P. Lovecratt, In 1&2@. It also is mentioned by the 15th century Arab scholar, Abdut Alhazred In his Necfonomfoof}. (Copies of the N9Ctonomicon can be found in the Widener Library a1 Harvard and \n the library ciypt at MIskatonic Unlvmfsity In ArKham, Massachusetts.} As lurther evidence, note the pa ratios between the log of the Brig Bmm» cited by U>vecraft ar>d Ishmod's last printed words. Ishmod speaks of phenorr>ene which defied the laws of physics, in the Ernma log. we heaf Johansen speak of geometry which was "abnormat, non-£uclidaan, and loath- somely redolent of spheres and dimen^ sions apart from ours" The partially com- piete reference to the rocks of the island also correlates with the Lovecraft ac^ count of unbellevabEe greenish stone blocks at f?iyeh.
From the above discussion, i th\nk ft clear that tahmod and his frier»ds have fallen pK^ey to Clhulhu or some ether of the star-bom Old Ones. Only the olher day on one Qf the Pacific DX nets I heard at about 35 wpm the horrid refrain. "Ph'ngjul mglw'nafh Cthulhu RHyeh wgah'nagi fhtagn," I tear for my fellow hams on other Pacific artd Indian Ocean DX pad it Ions. They should take great care.
Hanry P. Dovrst KASKHJ Paolf jc Pallsadsa CA
102 73 Magazine • June^ 1984
THANKS, 73
Just a short note to thank you lor 73. I have been a ham lor only arm year afMl have lound 73 to be excellent reading with enough "beginner" proiscts to keep my in- terest high and my curiosity aroused
I am fKiJ very adept at the technlical as- pects of mmafeur radio yet, but the proj- ects In 7$ are educating me and encour- aging me to learn by doing.
Also, I mink your editorials are terrific^ It's beefi « long lime since I've Sn Joyed reading someone's philosophy who has the courage to tell people the real facts of lite; that Is, "if you want something, go aftaf it arul earn Itl" Thanks tor reaffirm- ing rrty tsetief in the spirit that ortce made thla country great. I hope more people begin to reapply this attitude.
Keep up the good work!
Gary Mills KS4ENQ Mlddlesbofo KY
WET BATTERIES
Reference is made to your article, "Wet Battery Quiz."
First of ail, smartass that t am. Til admit I flunked the quiz. And I thought I knew it all. Mice the subtitle said.
Mhink I can cleaf up your author's com- prehension on a couple of related points^ He asks, "How couFd the corK:rete floor gst through the acid- impervious case?'* The time4H>nored advice to ivol so store a lead/acid battery is correct. Such slorage frequently Impiiae storage In an un heated garage or outbuilding. At night the iofn- perature of the battery and floor both drop. In the momlngi, with the battery in in- timate contact with the floor as a heat sink, warm moist air will cause condensa- tion on the esiterlof case.
He Is correct in stating that the acid path across the top of ttie battery will cause leakage.
He asks, ''How come the acid Inside the case does not cause current leakage?" Fair quest ior^ Here Is my answer: First of all, Ihink of a 2-volt cell as two "half-cells'' with Ihe gross part of the acid t>etween them as a conductor and the acid In in- timate contact with each cathode or anode as highly ionized arvd a component of the ha [f -eel I. With this concept II can be realized that an acid path across eitternal terminals of greater potential than 2 volts will ir>deed cause a current to !low. And to make the case crystal dear to anyone still doubting, the highly-Ionized Interface be-
tween the conducting acid and the termi- nal "plates" out as a different colored chemical depending on the terminal po^ Larlty^ White negative, and green poslttvei 1 hope this cieafs up his understanding; It has mine* Thanks for a great article. I am an Old Car Nut, and between winter storage arKJ summer heat and overcfiarg- Ing of these animals, what I have learned will be put to good uee Immediately.
William T. Tyrrel W2YKQ
East NofthpOft NY
SUPPORT YOUR NET
This is tlM first letter that I have written to you for publishing and I suppose that not all amateurs will agree, bul 1 do know that Ihe message needs to be O'Otten across, I suppose that the be^i title for this would tie 'An Open Letter to All Ama- teurs." I am nol the best at spelling nor am I convinced that this will even t>a pub- lished, but i thought that I would at least make an att^npt.
I have t>een a ham for afound a years now and, like many hams, spend very little time on the air An incident happened to me, though, that Inspired me to write this letter. I had a OSO with a Mextr:ar» ama teur station, and tjy colncider>ce he had a very good friend In a smalt town in Tennas*' see whom he had not been able to con- tact. Having checked Into the Tennessee Net several times, I knew that I had a chance tg contact his friend, so 1 offered to pass a message and see If I could ar- range to get the two together on a 15- or 2f>metef frequency. My Mexican amateur was vefy excited about this, although he didn't understand the net type of opera- tion Of Its purpose; On March Sth, 19S4. it Just so happened that there was ar>otl^ef ham in that small community in T^i- nessee who also was on the same phone exchange. Not onjy was I able to get the message across to my Mexican's friendi but also he was going to meet him on the aJf at tfte same time that I had aRarvged a schedule with him Ihe following Saturday.
The moral of this story Is, pfease, no mattsf how large a community you belong to, support yotri' /oca/ $fare rtef ! I had no Idea that there was even anottiei ham in that community; other than the one I needed to contact, but there was, and b^ecause he devoted thirty minutes of his time to be on the net, f was able to get two good friends togettter and back on track. Whether it Is across the state, country, or world, the nets serve a very important pur- pose but are useless unless they ttave Ihe support of the hams In the state and com- munittes and counties of the state. It may be that you may never be called upon for traffic to your area, but what a blessing It is when you need an area ar^ you can im- mediataiy get that area arMJ pass the mes- sage.
t have heafd many negative comments
H« had brou^l ■ large mip represerftTng Ihe sea.
Without the Itast vestige o1 land:
And the crew were much pleased when thay lourkd IHo be
A map they could alt uiKlerstand.
"What's tbe good of Mercs tor's Horlh f>oles and Eifuators.
Tropics, Zof^es, and Meridian Unes?"
So the Bellman would cry: arKJ the crew would reply
They are rrverely conventional signs!"
"Other maps are such shapes wHh their Islanda and capos!
But weNfe gat our brave Captain to itiank"
(So the Cfow would protest! "that he brought ut the beat—
A perfect and absolute blank I"
From 'A Nttyticai SaZ/ed, " C^rfes Carryt, t84f-1920.
a!x>ut the nets, how trivial they are, and that they serve no purpose, but believe me, one such use as I tiad and the net takes on a whole new meaning. I hate to hear the negative comments on how bad nets are conducted, tt may be thai a cer- tain net control Is ba<l or a certain net is in> ixmalMenl, bul as amateurs we all owe it to ourseWes to make an effoft to learn proper net procedures— both CW and SSB. Some time, devote one night of the week to your state's net ar>d get to know tfie net controls and the purpose of Ihe nets, the time they meet, and mosi of all how you can contribute, I would iiKe per* sonaiiy to charge all amateurs to help pro- mote tlve best puNic service that we, as amateurs, can provide, and get /nvo/ved. If you don't because of the lack of net pro- cedures, write the editors of this put^lica- tion or any ARRL official and I know that they will be glad to assist you. The mes- sage needs to get out, arKl an amateur's time cannot be put to better use than try- ing to help his feliow amateurs and the public by net participation.
Gary 8, Kendrlcfc KW4Z Chattanooga TN
TWO-METHR BEACON
The Lincoln Communications Society, Lincoln, Nebraska, has constructed a bea- con trarMmitiei to provide a signal for propagation Studies and ffet^uency refer- ence^ The beacon current iy operates Al (CW) on 144.055 MHz with an output pow- er of 10 Watts to an omnidirectional an- tenna. The beacon location ts in Ihe north- east corner o* gtid square EN-IO- The 10 call sign is WBlftQiV/B. Reception reports should be sent to me at the Lincoln Com- munications Society.
Charles Connor K«NG Secretary
1B01 So. 4eth SI. Lincoln NE a85a«
FAR OUT, FAROUT ARC I
On SeptemlMr 17, 1983, 1 worked Ruth- ann WDOSMK, wTkj was operating special- event station WBB5MC In eel at rat ion of the 10th Anniversary of the Fa rout Ama* teur Radio Club located in Dayton, Ohio.
We exchanged ttie QSLs and on March 3, 1984, 1 received a beautiful personalized piac^ue as a token of the club's thanks iot being a part of their celebration. Three QSLs had been drawn at random, arnl I was lucky to be one of them,
I would like to publicly thank the Farout Amateur Radio Club very much. A club like this that takes that e^tra step has to go farU May ih&f have 100 more aniuvef- saries!
nfchard C. Schoti KA2PHQ Spancef|iorl NY
[
DX WORLD
Recently a program I wrote appeared In 73 [FetiruarY, 13S4). "Put the DX World On the SCfeen.'' I would like to thank all the many people thai wrote ma with their commentSt suggestions^ end their orders. The real pay in doing a project like this is the thanks that I receive from all my fellow liama; Lord krwws the n^oney Isn't worth IL I hope that all the people who received my program were pleased with what they received.
As many people already know, I did a re- write of ttte Prefijt Locator program tor the
CommodoTfl 64. 1 ad<l«d many iBalures to tt that yt:)u will not flna in tha VIC version. Lei me Mat softt^ of th« addtd f6«ture&.
• A more expanded data lltt^ Including dtJee and all the states In the US of A.
• Two clocks, one locftf &n4 ofm GMT,
*User~aelactabte Bcreerip border, and print coloffl,
• An MUF forec«9f in local time and GMT timet
• Printer output routines.
• A nnachEno^anouaot dsla-s«arch rou- tine. Now data seaiiches lake three (o five
«ecorvd9 Instead of three to four minutee. • And, recently added, is a sunrise and sunset calculation routine.
This version is availably from me or from RAK Electronics. The C64 version is available on tape or dlslc A C64 version of om form or inother has been availabie
since November, 1383. The C64 ifsrslon has been updated several times and some older versions don't have all the features mwtioned above.
Eugenn Mc^rgan WB7RL)(
tail Cn?«» St.
Ogdeii^S4404
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73 Magazine • June, 1984 103
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For Information calf: (602) 242-3037
TcMt Fr«e Number 800^528-0180 (For orders onty)
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
(fH*^l|^ electrof|ie§
"All pans may be new or surplus, and parts, may ba substiiuied w^m co/Ttparatita parts 41 wa are oui of slock ot ar^ itaiTL"
104 73 Magazine • June, 1984
1
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60pf |
120pf |
470pf 51 up pes . ? . 80 ea |
|
7pf Upf 27pf 34pf |
SOpf |
130pf |
500pf |
|
8.2pf 15pf 27.5pf 40pf |
82pf |
140pf |
lOOOpf |
|
NIPPON ELECTRIC COMPANY TUNNEL DIODES |
MODEL 1S2199 |
1S2200 ^^-^^ |
||
Peak Pt, Current ma. Ip |
9inin. lOTyp. Umax. |
9min. lOTyp* Umax* |
||
Valley Pt. Current ma» Iv |
1.2Typ. |
I.Smax. |
K2Typ, I.Smax. |
|
Peak Pt. Voltage mv, Vp |
95Typ. |
120fnax. |
75Typ. 90max, |
|
Projected Peak Pt, Voltage mv. Vpp Vf=I |
p 480min. |
550Typ. |
630max. |
440min, 520Typ, eOOmax, |
Series Res. Ohms rS |
2.5Typ. |
4max. |
2Typ. 3inax. |
|
Terminal Cap. pf, Ct |
1.7Typ. |
2max. |
5Typ» 8max, |
|
Valley Pt, Voltage mv. VV |
370Typ. |
350Typ* |
||
FAIRCHILD / DUMONT Oscilloscope Probes |
Model 4290B |
Input Impedance 10 meg., Input Capacity 6.5 to 12pf., Division Ratio (Volts/Div Factor)
10:1, Cable Length 4Ft, , Frequency Range Over lOGMHz.
These Probes will work on all Tektronix, Hewlett Packard, and other Oscilloscopes.
PRICE $45.00
MOTOROLA RF DATA BOOK
Listsall Motorola RF Transistors / RF Power Amplifiers, Varactor Diodes and much much more.
PRICE $7.50
For information call: (602) 242-3037
Toll Free Number 800-528-01 80 (For orders only)
JM^^^z electroi|ics
**AII parts may be new oi Surplus, and parts may be substituted with comparable pads if w6 are out of stock of an IttifTL"
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
73 Magazine • June, 1984 105
RF TRANSISTORS, MICROWAVE DIODES
rVFE
PRICE
TfPS:
PftlCE
TYPE
PRICE
■nfFE
PRICE
20561 |
$ ^.00 |
WnS62 |
25.00 |
2mmi |
25.00 |
^12967 |
1.55 |
2J^2e57J^WIX |
4.10 |
2N2S57JANT?CV |
4.10 |
2N2876 |
13.50 |
2tGd47 |
16.35 |
2K2948 |
13-00 |
216949 |
15.50 |
2K337S |
17.10 |
3H3553 |
l.M |
3N3a33 |
15.50 |
2N3733 |
11.00 |
2N3818 |
5,00 |
2N3aeB |
1.30 |
2N336BJM |
2.20 |
2HaB24 |
3.:s |
2N39S7 |
17.25 |
2K38G0 |
25.00 |
2N4012 |
11,00 |
ZN4041 |
14.00 |
2JMQ72 |
1.80 |
2M06D |
4.53 |
2ttll27 |
21.00 |
2N4427 |
1,30 |
2N4428 |
1.66 |
2Hi430 |
11.80 |
214967 |
3.45 |
2JM959 |
2.30 |
2N5090 |
13.80 |
2NS108 |
3.45 |
2Zi&ll» |
1.70 |
2H510Q |
3.4& |
aei77 |
21,62 |
36179 |
1.04 |
2H521JS |
56,00 |
2N8Sa3 |
3.45 |
2N5aa9 |
9.77 |
2N5^Q |
10.82 |
2N5501 |
13.80 |
2N5637 |
15,50 |
2Z6641 |
12.^ |
aeaa |
14.03 |
2N5643 |
15.50 |
2N564S |
i3.ao |
^^646 |
20,70 |
2^5631 |
11.03 |
2N56ai |
18.00 |
2NS764 |
27.00 |
2I«&^6 |
3,45 |
2£842/llfliXl7 |
8.45 |
2ffi649 |
20.00 |
2N5813 |
3.2S |
2N5916 |
3B.0O |
2N3922 |
10,00 |
2N5923 |
25.00 |
2N5ia41 |
23.00 |
2^6^2 |
40.00 |
2;©&44 |
10*35 |
2^5645 |
U.50 |
14.40 |
|
2^46080 |
10.35 |
2N6081 |
12.07 |
2NB0e2 |
12.65 |
2N60e3 |
13.^ |
316084 |
15.00 |
wBom |
U.OO |
2NB08& |
12,00 |
2r»oe6 |
16,10 |
2NS097 |
20.70 |
2N61C^ |
21.00 |
2NBl3e |
21, S5 |
2113166 |
40.24 |
S«2D1 |
50.00 |
36304 |
1.50 |
aeise |
18.00 |
2IQS67 |
10.06 |
2Ne6ao |
80.00 |
23C?t)3 |
3,00 |
23C756A |
7.50 |
2SC7S1 |
2.80 |
23C101B |
1.00 |
»no42 |
12.00 |
2SC107O |
2,50 |
29C1239 |
2.50 |
29a251 |
12.00 |
2SC1306 |
3.90 |
2SC1307 |
5.30 |
2Sa424 |
2. BO |
SSClfiTS $ |
2.00 |
HllS-l $ |
16.90 |
ieci«2i-3 |
£125,00 |
29C1729 |
20.00 |
16579 |
7.95 |
ieaaai-iD |
225,00 |
2yL1760 |
1,30 |
m^es |
7,50 |
mci3mk |
40.00 |
2SC19CB |
4.00 |
yn6'M |
7.95 |
Msrz>?„vio |
200.00 |
asriMs |
3fi.00 |
M9623 |
9.05 |
MSC3000 |
50.00 |
2SC1946A |
40.00 |
Mg624 |
11.95 |
MSr3001 |
50,00 |
2SC1970 |
2.50 |
M967n5 |
17.95 |
UaC73001 |
50.00 |
2*0074 |
4.00 |
16630 |
18.00 |
IQC820O1 |
40.00 |
?Hy.im |
5.50 |
1B740 |
29,90 |
IGCB2014 |
40.00 |
2SC2237 |
32.00 |
1^741 |
29.90 |
IftULiiU^ |
40,00 |
47.00 |
leJftA |
19,50 |
H908203n |
40,00 |
|
il50-12 |
25,00 |
16648 |
37,00 |
H3C83JJ01 |
50.00 |
A209 |
10.00 |
M9850 |
16.90 |
M9C83006 |
100. a* |
A283 |
5»00 |
1©651 |
20.00 |
m'4150 |
14.40 |
A:^R3R |
6.00 |
M9887 |
5.25 |
msi26 |
POR |
AFioa |
2,50 |
MELSOOSl |
25.00 |
m5596/2^f5596 |
99.00 |
AfT12 |
2.50 |
IH1&50 |
10.00 |
in57^/2M5768 |
95.00 |
aP2r2A |
2.50 |
III15S2 |
50.00 |
wmmz |
PCB |
Mtym |
2,50 |
iHisas |
50.00 |
NEQ2136 |
2.50 |
BFR90 |
1.00 |
IH1614 |
10.00 |
1^13783 |
POR |
Iillf9l |
i.as |
III1&I3/S44072 |
1.80 |
MI1^1889 |
HH |
Hi-Tt99 |
2.50 |
il!2608 |
5.00 |
NE57835 |
5.70 |
Bm2 |
2.50 |
ldM.3375A |
17.10 |
NE73430 |
2.30 |
BPTVIBA |
2,50 |
Um'123 |
10.00 |
'lUff |
|
Bf1ffl7 |
2.50 |
lilSOOO |
1,15 |
PffrfflT37 |
wm |
Bni92 |
1.50 |
iinnnn |
2.30 |
praiyo |
nu |
ER644 |
2.50 |
MfiOll |
25.00 |
f019I |
POR |
BF%^S |
2,50 |
WF102 |
.45 |
fl'JlQS |
POR |
WWB |
2.50 |
ICSU31 |
1.01 |
Pr3537 |
7.80 |
BtKM |
2.50 |
ISU2023-1.5 |
42.50 |
WTAimE |
pce |
WKK'f |
2.50 |
mFM}B |
16.10 |
PT4l7fT0 |
PGR |
^PiFXSa |
2.50 |
10^*212 |
16.10 |
PT4186B |
POH |
BR£88 |
1.00 |
lfflF223 |
13,25 |
Pr4209 |
PUR |
BFYll |
2.50 |
1BF224 |
15.50 |
Pr42GeC/5645 |
vm |
BFi'lfl |
2.50 |
IBF231 |
10.32 |
Pm556 |
24.60 |
BJY19 |
2.50 |
ICff232 |
12. U7 |
msTO |
7.50 |
Btrje |
2.50 |
inF233 |
12.^ |
pra577 |
PGR |
unryo |
1.00 |
11^237 |
S.15 |
Fi'4390 |
Ri* |
BLX87 |
15.24 |
11RF23B |
13.80 |
PT4612 |
PCR |
BLSB8C3 |
15.24 |
MRF239 |
17.25 |
PT462a |
PCR |
HTXP3C3 |
22.21 |
MPTZAb |
35,65 |
F14640 |
HJK |
n],¥A7A |
a.M |
m£F247 |
:w.65 |
Pr4643 |
PGR |
IOB8C3 |
13.08 |
MHt^JO* |
43.45 |
wi^em |
4.70 |
02940 |
21.30 |
mFJOQ |
33.81 |
Plb749 |
KJU |
RliYSil |
10.00 |
mF314 |
28.52 |
ITI*529 |
mm |
BLY568C/CF |
30.00 |
1iKF315 |
28.86 |
PTSTOa |
PCR |
0158-617 |
25,00 |
MRF316 |
POR |
P1B720 |
RH |
C400S |
20.00 |
HUf^l? |
63.94 |
l^l^'ilO |
PGR |
ayiSBB |
20.00 |
MFrF420 |
20.00 |
ir'iy524 |
pan |
CS21S8 |
18.00 |
IIHt'421 |
36.80 |
PTfKiOf? |
PGR |
UJ2&15 |
25.00 |
lffiF422A |
41.40 |
I>T8633 |
vm |
CIC300S |
100.00 |
ieir427 |
17.25 |
PTB63S |
PGR |
Dntcel CoAs WET |
■aiiL ■QB^m |
yRF428 |
46.00 |
Pt86S0 |
RH |
tBCLSDOIA-PlODF |
49.30 |
KRF433 |
12.07 |
PI8679 |
FOR |
Fujitsu GaAe JET |
UI1K'14^/A |
12.65 |
PTBTOe |
POR |
|
fSX52WF |
5B.00 |
WRF450/A |
14.37 |
^l^7(J9 |
PCR |
CUOSdOA |
2.50 |
lffiF45a/A |
18.40 |
nhfAl |
29.00 |
Ubl^e |
4,95 |
1fiF454/A |
20.12 |
Vri^fJl |
RM |
HEPff^m^ |
U.40 |
IH1--455/A |
16.00 |
PrB742 |
19.10 |
HEPSa003 |
30.00 |
lffiFi5a |
20.70 |
pra7B7 |
K» |
HE3^3005 |
10.00 |
WP463 |
25.00 |
Fiy/«3 |
16.50 |
UEFS3005 |
10.90 |
lffiF472 |
1.00 |
Ply784 |
:^.7o |
IS3^S3007 |
25.00 |
lffiF475 |
3.10 |
P1S790 |
5fi.O0 |
iffpsaolo |
11.34 |
MRF476 |
2.00 |
PT31902 |
P(JK |
Hafflett Packard |
WRf477 |
14.95 |
Pr31963 |
PCR |
|
HFEn2204 |
112.00 |
lffiF492 |
23,00 |
FTJioea |
PUR |
.-15R21E |
38.00 |
lefsoa |
1.04 |
PTsmm |
POR |
3Sfi26B |
33.00 |
WhbOli |
€.00 |
BC^ |
|
35826E |
33.00 |
inF504 |
7.00 |
40061 |
5,00 |
35831E-1I31 |
30,00 |
HRF509 |
5,00 |
40UV9 |
10.00 |
35831E |
30.00 |
Ul^bll |
10.69 |
40280 |
4.62 |
35S32E |
50.00 |
AIRb^l5 |
2.00 |
40281 |
10.00 |
35B33E |
50.00 |
MRF517 |
3,00 |
40282 |
20.00 |
35aS3E |
71.50 |
mTftm |
2.05 |
40?^ |
2,80 |
:^854E |
75,00 |
IKtlMJS |
20.00 |
40292 |
13.06 |
35666E |
44.00 |
mFBlB |
25.00 |
40294 |
2. SO |
KXTB3101 |
7.00 |
my^mi |
S.^ |
40341 |
21.00 |
leOTQlOS |
8.75 |
wgggg |
3,45 |
40606 |
2.48 |
H3Cnt5104 |
30,00 |
WPB44 |
27.60 |
40694 |
1.00 |
H}aTei04 |
68.00 |
lffi!=B46 |
29,90 |
40977 |
10.00 |
HJm«105 |
31.00 |
MJU^ie |
15.00 |
fiKSOOA |
60.00 |
HKTBfilOS |
33,00 |
URFB23 |
20.00 |
RE3754 |
25.00 |
J310 |
*70 |
Jfff901 (3) bsad |
1.00 |
RF:wad |
25.00 |
Tim |
ieF901 (4) lemd |
2.00 |
I&IIO |
25.00 |
|
.M«noo |
10.00 |
mFsm |
2,30 |
S50-12 |
25.00 |
JUiOOl |
25.00 |
ISPBII |
3.0O |
S3U06 |
5.00 |
JD4045 |
25.00 |
H^'^l |
2.30 |
S3031 |
5.00 |
Motorola Cciiin. |
HHtHOOl |
2.10 |
SCA3522 |
5.00 |
|
iai31 |
8,50 |
MS261J' |
POR |
SCA3523 |
5.00 |
M1132 |
11. 9S |
mjim-i2 |
225.00 |
PRICE ON RHCJlflsr ^ R3B |
Toll Free Number
800-528-0180
(For orders only)
"All i^arts fniy b4 new or •ufpliis, and pans may be lubsiitut&d with cxHnperabto parti n wt are out af stocfc of *n Mtfit"
For information eall: (602) 242-3037
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
(fH^^^ elect roi|ic§
106 T^Magazfne • June, 1984
GaAs, TUNNEL DIODES, ETC.
'
• fl F TKAJSISnitS *
Tt9E
SD345
^1004 mi(X» 3iVX0-2
a>ioi2
SD1012-5
SD1013-3
SD1013-7
SD1014
SI1D14-6
SDlOiB-H
StH018-6 SDlOlH-7
a}iot3
3J1043-1
SD1053 ^1065
a>i06a
aM074-2
aao74"4
SDlOfTB
3D1077-4
331077-6
a>107B-6
S)1060-3
aaoeo-9
SDIOM SDloe?
SD1095 SDllOO
a)ni5-2
Sill 15-3
smifi
SDlllB
$ 5,00
5.00
15.00
15.00
15.00
9.90
9. SO 13.50 13.30 11.00 ILOO 15^00 15.00 15.00 15.00 15.00 15,00 10.00 15.00 12.00 12,00
la 00
3.73
2.00
4.00
4.75
15,00
IS, 00
28*00
28.00
20.00
4.00
4.00
^^00
6.00
3.00
d.oo
IS.OO
15.00
15.00
5.00
1S,00
3,00
8.00
£.50
5.00
22.00
TTffig |
PftlC^ |
•nire |
SD1H0 |
ig 5.00 |
801278-5 |
SD1124 |
50.00 |
SD12S1-2 |
SD1127 |
3,50 |
SD12S3 |
9311:33 |
14.00 |
SD12a9-l |
SD1133-1 |
14.00 |
801290^ |
SPtl34-l |
3.00 |
SD1290-7 |
SD113S |
a. 00 |
^^300 |
SD1136 |
15.00 |
aD130l-7 |
SD113&-2 |
15.00 |
8D1306 |
SD1143-1 |
12.00 |
801307 |
331143-3 |
17.00 |
SDX30g |
33U44^1 |
3.00 |
SDX3U |
H>1146 |
15,00 |
351317 |
^1147 |
15.00 |
971335 |
smsi |
10. 00 |
SDI345^ |
smm |
24.00 |
S^136S-I |
SD1200 |
1.50 |
SD13e5-5 |
SD1201-2 |
10.00 |
301375 |
SD12Q2 |
10. 00 |
fiD1375p^ |
3)1212-11 |
COO |
9^379 |
Sni212-12 |
4.00 |
SD13a>-l |
ail2l2-l€ |
4.00 |
an3ao-3 |
ail2l4-7 |
5,00 |
^1380-7 |
S>1214-U |
5,00 |
Sn405 |
S31216 |
12,00 |
SD1409 |
SD121@^ |
15.00 |
gD1410 |
SD1219-5 |
15.00 |
SD1410-3 |
^1219-8 |
15.00 |
SD1413.1 |
SPUffl) |
B.OO |
£D141€ |
snsao-^ |
8.00 |
an422-2 |
00323-6 |
16^00 |
^11428 |
S01232-11 |
7.50 |
SD1429-2 |
SD1224-10 |
18.00 |
301429-3 |
SD1225 |
18.00 |
aD1429-5 |
SD122S^ |
POR |
SD1430 |
331229-7 |
13.00 |
a>1430-2 |
a]rl229-l£ |
13.00 |
3J1434-5 |
3n2^ |
4,00 |
a;l434-9 |
311240-8 |
15.00 |
S}1438 |
SD1244-1 |
14,00 |
sn44i |
SD1262 |
12.00 |
SD1442 |
SD1263 |
15.00 |
SD1444 |
St>a263-l |
15.00 |
801444-8 |
^1273 |
13.00 |
SD14S0-1 |
311272^2 |
15.00 |
aXL45l |
SI1273-4 |
15,00 |
S)145l-a |
an278 |
20.00 |
an452 |
Sm278-1 |
IS, 00 |
3)1452-2 |
Sie.oo
8.00 10.00 15.00 15.00
L5.no
3.00
3,00
3.00
3.00
3.00
1,00
10,00
3.00
5.00
2.50
2,50
7,50
7,50
15,00
1.00
1,00
1,00
40.00
18.00
22,00
31,00
18, OD
50.00
24,00
33,00
15.00
15.00
15,00
12,00
18,00
30.00
30.00
26,00
91.00
15.00
6.00
6.00
2S.00
18,00
18,00
20.00
20.00
TfYre
^1^53-1 |
$48,00 |
aD1454-l |
4H,00 |
^1477 |
48,00 |
S>147e |
21,00 |
aDl4B0 |
60.00 |
3(^484 |
1,50 |
0)1484-5 |
1.50 |
3)1484-6 |
1,50 |
SD1484-7 |
1,50 |
SD14&8 |
39.00 |
SaDl4Sli'l |
28,00 |
3)1488-7 |
27,00 |
SDM^-8 |
38.00 |
9)1490-1 |
39,00 |
an52o-2 |
18,00 |
3)1522-1 |
33,00 |
3)1528-1 |
24.00 |
8D1528-3 |
34,00 |
SD1530-2 |
3.00 |
S)1536-1 |
41,00 |
3)1545 |
34.00 |
3)1561 |
79.00 |
SF4557 Itot, |
25.00 |
SIC3048 mA |
5.00 |
Siai77 RCA |
15.00 |
SWS7714 Mot, |
2.50 |
5fiF750 hfc>t. |
36.00 |
SRFIOIB Itot. |
."1,00 |
3iF2147 tfct. |
22.00 |
StFZ356 fcbt. |
38.00 |
Sff2378 Itol. |
16.00 |
^F2S84 Hot. |
40.00 |
SIiF2S21 Hot. |
^.00 |
gfiF2857 Mot. |
20.00 |
TASS34 RCIA |
15.00 |
TlS189/*«89e8 |
3.55 |
TP312 |
2.50 |
1P1014 WM |
5.00 |
TPicee iror |
15.00 |
01-80703TO4/ |
|
468-^9 fot.Cbrrm |
. 65.00 |
TCVT2201 H.P. |
450.00 |
82803 RCA |
100.00 |
TA7205/2K5921 |
BO. 00 |
TA748?/2N5eeO |
75,00 |
xh7ae6/aM2G7 |
150.00 |
JiiKAJUS Ifat. |
18,00 |
WF479 |
8,05 |
flb Can Ciroes R^ferxsnue Stost RF Trunststors, Diodes, ftyhrid Modules And Any Other Type Of Senicocidijctor.
* DiaiES (HOT CJUiRIER.MigjyAVE,PJN,3ajgniCif,TllKM£LA'AR^^ *
•«**«««•
1K21 |
$ 3.40 |
imm |
4.00 |
1I011E |
5,80 |
11038 |
3.40 |
Ue31K |
4.00 |
U42S«fE |
10.00 |
tirm |
26.00 |
1N7BB |
26.00 |
1K149 |
6.00 |
1244150 |
15.00 |
15B31 |
10.00 |
l>e930 |
15.00 |
1N3713 |
18.00 |
IN3717 |
14.00 |
IM3747 |
21,00 |
IMBim |
9.00 |
1M5142A/B |
4.2S |
1N5146A/B |
4.25 |
lf&l53 |
3.75 |
116713 |
5.00 |
1S220O |
15.00 |
A2X116M Aertf?ch |
50.00 |
fiUgl BCfTBC |
5.00 |
IH233B Alpha |
e^:b |
t60*7C Alpte |
FCfi |
Ii:£6l58-98 AlpiK |
PCR |
0Cl691-a& Q££ |
31.35 |
aC2542-46 GlS |
37.40 |
lffS082-0112 |
14.20 |
HP50e2-0375 |
PQH |
HHi08;i-iaa8 |
PCR |
8P50e2-2303 |
5.20 |
w^oez-2Stjo |
1.00 |
iP5oe2-3oao |
e.w |
lF50e2-3379 |
1.50 |
}ff>5O82-8O10 |
PCR |
MA475 |
PUR |
IWIIT^ |
PUR |
UA43636 |
PCR |
MA47100 |
3.05 |
UA478^ |
FOR |
1N£1B |
» 3.40 |
UGlOt |
S 3.40 |
UGIC |
% 3.40 |
lieilR |
4.00 |
UBIER |
6,00 |
UiSlEF |
5.00 |
IKllG |
5.80 |
IIGZ2 |
5.00 |
UC3A |
10.00 |
mz3C |
3.40 |
uescR |
3.40 |
1JG3D |
4.0S |
vmm |
5.00 |
1N25 |
7.50 |
lfQ5AK |
18.00 |
Uffi9 |
10.00 |
1N32 |
20.00 |
IN53A |
^.50 |
113768 |
28.00 |
1N78 |
36.00 |
1K78A |
20.00 |
1N78D |
28.00 |
mmxi |
28,00 |
lN7flR |
28.00 |
imddft |
18.00 |
1D415 |
4.00 |
1M15C |
4.00 |
iMiao |
s.m |
11M1££ |
6.00 |
3N446 |
10.00 |
1HS33 |
10,00 |
1N9S0 |
4,00 |
uoo&t |
2,00 |
1!!^ |
15.00 |
L%:3540 |
15.00 |
110712 |
u.oo |
1K3714 |
u.oo |
1W3715 |
16,00 |
IM3716 |
10,00 |
1N3718 |
10.00 |
UOTSl |
14, QO |
11^733 |
10,00 |
iM3ae |
20.00 |
1M396 |
15.00 |
1W47S5 |
11,00 |
liei39A/B |
4.25 |
11^140A/B |
4.^ |
ll©14U/8 |
4.25 |
llfil43A/B |
4.25 |
lf6144A/B |
4,25 |
]iei45A/B |
4,25 |
lfl5l47A/B |
4.25 |
1-^148A/B |
4,2S |
U^167 |
5,50 |
l!&i65 |
7,6& |
1115711 |
1,00 |
i;fi711 JAN |
2.00 |
li^TGT |
2.00 |
iiea63 |
1.00 |
182198 |
15,00 |
1S2208/9 |
i.OO |
aei087/48B869558 |
65,00 |
S03020 |
65.00 |
BB105B |
1.00 |
BB105G |
1.00 |
BD4/4JFIID4 G.S, |
15.00 |
CMD&14AB CM. |
PCft |
D4060 Alpha |
POR |
D4150 AlpJia |
POR |
D490a Alpha |
PCR |
M959 Alpha |
POR |
I>l9e7M Alpha. |
POR |
D5147D Alja |
fCR |
C5503 Alpiia |
POR |
EG506 Alpha |
KR |
lMsaCS2 Alpbk |
tai |
I1D6460A AliriiN. |
PCK |
ti'20054 C^tMH |
PGR |
GC16Q2-89 mi |
31.35 |
Qcmm-aomi |
31.35 |
0C2531-88aE |
37.40 |
0C3e08-40 Qsa |
37.40 |
0C17D44 CSZ |
50,00 |
aP336-MA-Ffn |
125.00 |
HPSOft2-0!£4l |
75.00 |
HP50a2"0253 |
105.00 |
HP50e2-O32O |
58,00 |
KP50a2-03a6 |
POP |
HP50B2-^KOX |
PCR |
HP5082-O138 |
FOR |
BP5082-1332 |
POR |
HP50a2-2254 |
POR |
HP5082-2302 |
10.70 |
1^5082-2696 |
FOR |
HP5082-2711 |
23,15 |
HI>5082-2727 |
PGR |
Iff5082-2a05 |
4.45 |
EEi5082-2S:£ |
1,00 |
HP5082-2884 |
PCR |
015082-3040 |
36.00 |
IP50B2-30S0 |
2.00 |
0^082-3188 |
1,00 |
12^082-6456 |
POR |
m^as2-&iisz |
POR |
POR |
|
1^^5082-8323 |
PCR |
K5A Kenitran |
7.00 |
IIM50A |
PGR |
MMOaOH |
FOR |
imi487 |
POft |
KIM 1765 |
POR |
\AM3l[m |
48.00 |
hlfl42589 |
PGR |
MA43622 |
POR |
liA45104 |
27.00 |
MA47M4 |
PCR |
WA47051 |
25.50 |
m472m |
30.80 |
MA47771 |
POR |
UA47838* |
POR |
uviaio@ |
37,95 |
lhl49S5e |
POR |
11486731 |
125,00 |
I
I
• am STOCK duicxs ouu' so call if if rat war wu see) is lur usibi ••••»»»••••••.«•*•••••«••••••••■••"*•••-
For intoniMtion call: (602) 242-3037
Toll Free Number 800-528^1 80 (For orders only)
''All parts may be naw or surplus, and parts may be 8titie))tuted with comparab^a pajia It we are oul of stock of an item."
JVI^^^j electr Oleics
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
73 Magazine • June, 1984 107
Electronic Specialty Co, /Raven Electronics Part & 25N28 Part ^ SU-Ol
26Vdc Type N Connector, DC to 1 GH*.
COAXIAL RfcLAY StflTCHES SPOT
FSN 5983-556-H83
$49,00
/VC
COM
NU
^6 Wf-%
^ ?2i
Aapheiiol
Part # 316-ID102-8
115Vac type BNC DC to 3 GHz.
$29 . 99
Part J^ 300-11182
120Vac Type BNC DC to 4 GHz,
FSS 5985-543-1225
539,99
FXR
Part ^ 300-11173 l20Vac Type BKC Same FSN 5985-543-1850
S39.99
BNC To Banana Plug Coax Cable RC-58 36 inch or BNC to N Coax Cable RG-58 36 Inch.
$7*99 or 2 For $13,99 or 10 For $50.00
$8,99 or 2 For $15.99 or 10 For $60.00
SOLID STATE BELkYS
P&B Model ECT1DB72 PRICE EACH $5.00
Dlglslg, Inc. Model ECS-215 PRICE EACH $7,50
Grigflby/Barton Model GB7400 PRICE EACH $7.50
5vdc turn on
120vac contact at 7amp6 or 20aiiips on a 10'*x 10*'x ^124 aluiDinutn. He^tslnk with silicon grease,
24Qvac contact i^aix^s or 40aiQps on a iO"x I0"x ,124 aluminum- Heatsiuk with silicon grease,
240vac contact at 15amp3 or 40aiaps on a 10"x 10"i£ ,124 alwBiinuia, Heataink with silicon grease,
NOTE; *** Items may be substituted with other brands ot equivalent model numbers. ***
5vdc tnm on
3vdc turn on
qM*^
For information call: (602) 242-3037
electrof)icjii
*'AII parts may b^ ftew or surplus, and parts may be substituted with comparable parts If wB are out of slock of an Item/'
Toll Frtt Numli#r
eoo-S2a^oiao
(For onttn only)
PRICES SUBJECT TO CHANGE WfTHOUT NOTrCE
108 73 Magazine • June, 1B84
I
RECALL PHONE MEMORY TELEPHONE WITH 24 NUMBEK AUTO DIALER
The Reeall Phone Telephone cmfiloys the latesc Btate of art communlcatlosis technology, [t 1^ a comt^ioaiian telephone And aytomatic dialer that uses premiuiiii-quality,aoXLd* state Qircruitry to assure high^rfiXidblllty perfis^rmaiice In personal or buslneas applicacioas* $49.99
ARQN ALPHA RAPID BQKDING GLUE
Super Clue ffCE-486 high strength rapid bonding adhesive. Alpha Cyanoacry late. Set-Time 20 to 40 sec, ,0*7fl*ox^ (iQgis,)
S2.00
TOUCH TONE PAD |
MITSUMI LTiF/VHT VARACTOR TUNER MODEL OVElA |
Thia pad contains all the electronics to |
Perfect for those unBcrambler projecta. |
produce standard touch-tone tones. New |
New with data* |
with data. |
^^^^^^^^^ |
.^^^^B^^^^^^^^^^^^^B*'! |
|
4iHH^^^^^^^K/' ' |
|
$9,99 OT 10/^89.99 |
S19.99 or 10/S149.99 |
IMTEGRATED CIRCUIT,
MC1372P
HC135BP
«Ci350P
»C1330A1P
MC13L0P
MC1496P
LM565N
LH380N14
LM1889N
NE364N
NE361H
Color TV Video Modulator Circuit*
IF Amp. fLiiniCeryFM Detector p Audio Driver, Electronic Atteiiuator*
IF Amplifier
Low Level Video Detector
FM Stereo Demodulator
Balanced Modulator/Demodulator
Phase Locked Loop
2 Watt Audio Power Amplifier
TV Video Modulator
Phase Locked Loop
Phase Locked Loop
I to 10 |
iiup |
4.42 |
$2.95 |
5-00 |
4.00 |
1.50 |
1.25 |
l.SO |
KIS |
4-29 |
3.30 |
1.50 |
1.25 |
2.50 |
2,00 |
l>56 |
1,25 |
5.00 |
4,00 |
10.00 |
8.00 |
10. oo |
a. 00 |
FERRANTI ELECTRONICS AM RADIO RECEIVER MODEL ZN4 14 IK TEG RATED CIRCUIT. Featuraeii
1,2 to 1,6 volt operating range. , Less than 0.5nia current consumption* ISOKHz to 3MHz Frequency range. ^a^y to assemble, no alignment necessary. Effective and variable AGC action* , mil drive an earphone direct* Excellest audio quality* .Typical power gain of 72dfi.tTO-18 package, yitb data. 52.99 or 10 For $24.99
HT CAD RECHARGEABLE BATTERIES
AA Battery ?ack of 6 Thest are Factory New. $5,00
SUB C Pack of 10 1, SAznp/Hr'. $10.00
Gates Rechargeable Battery Packs
12vdc at 2,5Amp/Hr, 12vdc at SAmp/Hr,
$11.99 $15,99
^H^^i\j electroqici
''All pans may be riew or surplus, ai>d parts may t^d substituted wilh comparable pajis it we are our of stock ot an Hem."
MOTOROLA r>lRF559 RF TRANSISTOR
hfe 3Cmin 90typ 200rmx.
ft 3000rTfiz
gain 8db min 9.5typ at 870:tiz
13ct) typ at Sl^itiz output power .^jwatts at 12.5vdc at SZCTTtiz.
$2.05 or 10/$15.00
For infonnatlon call: (602) 242-3037
Toll Ftbb Number 800*528-0180 (Far orders only)
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
73 Magazine * June, 1984 109
"SOCKETS AND CHIMNEYS"
ElMAC TUBi; SOCKETS AND CHIMNEYS
SKllO
SK300A
SKAQO
SKAOe
SKA 16
SK5Q0
SK60a
5K602
SK6a6
SK607
SK6I0
SK620
SK626
StC630
SK636B
SK640
SK646
SK700
SK711A
SK740
SK770
SK800A
SKa06
SK810
SK500
SK906
SKi420
SKU90
Socket
Socket For 4CX5000A,R,J, 4CX10,OOOD, 4CX15,000A,J
Socket For 4-l25Ap2S0A,400A,40OC,4Flll25At400Ap4-500A,S-500A
Chimney For 4-25OAp400A,400C,4PR4OOA
Chlsmey For 3-4O0Z
Socket For 4-100QA/4PR1Q00A/B
Socket For 4CX2S0B,BC,FG,R,4CX55OA,F,FJ
Socket For 4CX250BpBC,FG,R,4CX35OA,F,FJ
Chimney For 4CX250B,BC.FG,B,4CX350A,F,FJ
Socket For 4GX600JtJA
Socket For 4CX600J,JA
Socket For 4CX600J\JA
Chimney For 4CX600J,JA
Socket For 4CX60CU,JA
Chiinney For 4CX600J,JA
Socket For 4CX60aj,JA
Chiomey For 4CX60OJ,JA
Socket For 4CX300A,Y,4CX125C,F
Socket For 4CX300A,Y,4CX125C»F
Socket For ACX300A,Y,4CXl23CtF
Socket For 4CX300A.Y ,4CX125C,F
Socket For 4CXIO0OA,4CXl5O0B
Chimney For 4CX1000A,4CX1500B
Socket For 4CX1000A,4CX1500B
Socket For 4X500 A
Chinmey For 4X500A
Socket For 5CX3D00A
Socket For 4C¥aOOOA
SPOR
$520,00
260*00
74,00
36.00
390.00
5K00
73.00
U.OO
60.00
60,00
66.00
10,00
66.00
34.00
36,00
71*00
223.00
225,00
86,00
86. DO
225,00
40,00
225.00
300. 00
57.00
630. 00
505.00
JOHNSON TUBE SOCKETS AiND CHIMNEYS
124-1 11/SK606
122-0275-001
124*0113-00
124-116/SK630A
124-L15-2/SJC62QA
Chimney For 4CX250B,BC,FC,R, 4CX350A,F,FJ
Socket For 3-500Z» 4-125A* 250A, AOOA, 4-500A, 5-500A
Capacitor Ring
Socket For 4CK250B,BC,FC,R. /4CX350A,F,FJ
Socket For 4CX250fl,BC^FG jR, /4CK350A,F,FJ
813 Tube Socket
$ 10.00 (pair) 15.00 15,00 55-00 55,00 20.00
CHIP CAPACITORS
,8pf |
lOpf |
lOOpf* |
|||||
Ip^' |
12pf |
llOpf |
|||||
Kipf |
15pf |
I20pf |
|||||
l,4pf |
I8pf |
I30pf |
|||||
i,5pf |
EOpf |
iSOpf |
|||||
l.Spf |
Z2pf |
leopf |
|||||
Z.Zpf |
24pf |
laopf |
|||||
2,7pf |
27pf |
200pf |
|||||
3.3pf |
33pf |
2Z0pf* |
|||||
3,6pf |
39pf |
240pf |
|||||
3.9pf |
47pf |
270pf |
|||||
4,7pf |
51pf |
300pf |
|||||
5.6pf |
56pf |
330pf |
|||||
6.8pf |
68pf |
360pf |
|||||
S.Zpf |
82pf |
390pf |
|||||
PRICES: |
1 ^ |
to ' |
10 - |
.99c |
101 to |
1000 |
,60e * |
11 |
to |
50 - |
.90€ |
1001 & |
UP |
,35C |
|
51 |
to |
100 - |
.80e |
430pf 470pf BlOpf 560pf 620pf 680pf
820pf
lOOOpf/.OOluf*
leoopfy.ooisuf
2700pf/.0027uf
10,000pf/.01uf
12,0Q0pf/,012uf
lStOO0pf/,O15uf
i8.000pf/,Ol8yf
IS A SPECIAL PRICE: 10 for $7,50
100 for J65.00 1000 for $350.00
WATKIUS JOHNSON WJ-V907: Voltage Control! eil Microwave Oscillator
$110,00
Frequency range 3,6 to 4,2GHZj Power ouput, Min« lOdBm typical, 8dBni Guaranteed. Spurious output suppression Harmonic (nfo), mln* 20ctB typical, In-Band Non-Harmonic, min. SOdB typical. Residual FM, pk to pk, Max. SKH2, pushing factor, Wax. SKHz/V, Pulling figure (1,5:1 VSWR), Rax. SOHHz, Tuning voltage range +1 to +i5vQlts, Tuning current, Hax, -O.lmA. moduUtion sensitivity range. Max, 120 to 30»iz/V, Input capacitance, Kax, 100pf» Oscillator Bias *15 +-0,05 volts g 55iiiA, Max.
TUBE CAFS (Plate) |
$11<00 |
HRl, 4 |
|
HR2,3, 6 & 7 |
13,00 |
HR5, 8 |
14.00 |
HR9 |
17.00 |
HRIO |
20. 00 |
Toll Free Number 600-528-0180 (For orders only)
"All parts may be new or surplus. &nd parts may be Substituted witft comparable parts If we afe out of stock of an item,"
JVl^^^z elect roqics
For information call: (602) 2424037 PRICES SUBJECT TO CHANGE WITHOUT NOTICE
110 73 Magazine • June, 1984
TYPE
TUBES
PRICE
TYPE
PRICE
TYPE
PRICE
2C39/7289 |
$ 34.00 |
1182/4600A |
$500.00 |
ML7815AL |
$ 60.00 |
2E25 |
7.95 |
4600A |
500.00 |
7843 |
107.00 |
2K28 |
200.00 |
4624 |
310.00 |
7854 |
130.00 |
3-500Z |
102.00 |
4657 |
84.00 |
ML7855KAL |
125.00 |
3-1000Z/8164 |
400,00 |
4662 |
100.00 |
7984 |
14.95 |
3B28/866A |
9.50 |
4665 |
500.00 |
8072 |
84.00 |
3CX400U7/8961 |
255.00 |
4687 |
P.O.R. |
8106 |
5.00 |
3CX1000A7/8283 |
526.00 |
5675 |
42.00 |
8117A |
225.00 |
3Cn000Fl/8239 |
567.00 |
5721 |
250.00 |
8121 |
110.00 |
3CW300O0H7 |
1700.00 |
5768 |
125.00 |
8122 |
110.00 |
3X2500A3 |
473.00 |
5819 |
119.00 |
8134 |
470.00 |
3X3000F1 |
567.00 |
5836 |
232.50 |
8156 |
12.00 |
4-65A/8165 |
69.00 |
5837 |
232.50 |
8233 |
60.00 |
4-125A/4D21 |
79.00 |
5861 |
140.00 |
8236 |
35.00 |
4-250A/5D22 |
98.00 |
5867A |
185.00 |
8295/PL172 |
500.00 |
4-400A/8438 |
98.00 |
5868/AX9902 |
270.00 |
8458 |
35 . 00 |
4-400B/7527 |
110.00 |
5876/A |
42.00 |
8462 |
130.00 |
4'400C/6775 |
110.00 |
5881/6L6 |
8.00 |
8505A |
95.00 |
4-1000A/8166 |
444.00 |
5893 |
60.00 |
8533W |
136.00 |
4CX250B/7203 |
54.00 |
5894/A |
54,00 |
8560/A |
75.00 |
4CX250FG/8621 |
75.00 |
5894B/8737 |
54.00 |
8560AS |
100.00 |
4CX250K/8245 |
125.00 |
5946 |
395.00 |
8608 |
38.00 |
4CX250R/7580W |
90.00 |
6083/AZ9909 |
95.00 |
8624 |
100.00 |
4CX300A/8167 |
170.00 |
6146/6i46A |
8.50 |
8637 |
70.00 |
4CX350A/8321 |
110.00 |
6146B/8298 |
10.50 |
8643 |
83.00 |
4CX350F/8322 |
115.00 |
6146W/7212 |
17.95 |
8647 |
168.00 |
4CX350FJ/8904 |
140.00 |
6156 |
110.00 |
8683 |
95.00 |
4CX500J/8809 |
835.00 |
6159 |
13.85 |
8877 |
465.00 |
4CX1000A/8158 |
242.50* |
6159B |
23.50 |
8908 |
13.00 |
4CX1000A/8168 |
485.00 |
6161 |
325.00 |
8950 |
13.00 |
4CX15OOB/8560 |
555.00 |
6280 |
42 . 50 |
8930 |
137.00 |
4CX5000A/8170 |
1100.00 |
6291 |
180.00 |
6L6 Metal |
25.00 |
4CX10000D/8171 |
1255.00 |
6293 |
24.00 |
6L6GC |
5.03 |
4CX15000A/8281 |
1500.00 |
6326 |
P.O.R. |
6CA7/EL34 |
5.38 |
4CW800F |
710.00 |
6360/A |
5.75 |
6CL6 |
3.50 |
4D32 |
240.00 |
6399 |
540.00 |
6DJ8 |
2.50 |
4E27A/5-125B |
240.00 |
6550A |
10.00 |
6DQ5 |
6.58 |
4PR60A |
200.00 |
6883B/8032A/8552 |
10.00 |
6GF5 |
5,85 |
4PR50B |
345.00 |
6897 |
160.00 |
6GJ5A |
6.20 |
4PR65A/8187 |
175.00 |
6907 |
79 . OO |
6GK6 |
6.00 |
4PR1000A/8189 |
590.00 |
6922/6DJ8 |
5.00 |
6HB5 |
6.00 |
4X150A/7034 |
60.00 |
6939 |
22.00 |
6HF5 |
8.73 |
4X150D/7609 |
95.00 |
7094 |
250.00 |
6JG6A |
6.28 |
4X250B |
45.00 |
7117 |
38.50 |
6JH6 |
6.00 |
4X250F |
45.00 |
7203 |
P.O.R. |
6JN6 |
6.00 |
4X500A |
. 412.00 |
7211 |
100.00 |
6JS6C |
7.25 |
5CX150OA |
660.00 |
7213 |
300.00* |
6KN6 |
5.05 |
KT88 |
27.50 |
7214 |
300.00* |
6KD6 |
8.25 |
416B |
45.00 |
7271 |
135.00 |
6LF6 |
7.00 |
416C |
62.50 |
7289/2C39 |
34.00 |
6LQ6 G.E. |
7.00 |
572B/T160L |
49.95 |
7325 |
P.O.R. |
6LQ6/6MJ6 Sylvania |
9.00 |
592/3-200A3 |
211.00 |
7360 |
13.50 |
6ME6 |
8.90 |
807 |
8.50 |
7377 |
85.00 |
12AT7 |
3.50 |
81 lA |
15.00 |
7408 |
2.50 |
12AX7 |
3.00 |
812A |
29.00 |
7609 |
95.00 |
12BY7 |
5.00 |
813 |
50.00 |
7735 |
36.00 |
12JB6A |
6.50 |
NOTE
* =
= USED TUBE
NOTE P.O.R. = PRICE ON REQUEST
"ALL PARTS HAY BE NEW, USED, OR SURPLUS, PARTS MAY BE SUBSTITUTED WITH COMPARABLE PARTS IF WE
ARE OUT OF STOCK OF AN ITEM.
NOTICE' ALL PRICES ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Far InfomialSon cail: (602) 242-3037
Toll Free Number
600-528-01 80 (For orders only)
"AM pafts may be new or surplus, and parts may be substituted with comparable p@rts if we are out of stock of an Item."
^H^x electroi|ici
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
I'
73 Magazine • June, 1984 111
"FILTERS"
COLLINS Hechgnlcol Filter #526-9724-010 MODEL Fi|55Z32F
455KHE at 3,2KH3 wMe, May be other models bot equivalent- May be used or newt 515*99
ATLAS Crystal Filters
5* 595-2, 7/8 ASB, 5.595-2,7/lSB
8 pole 2-7KHZ wide Vpper sidebard. InpedeiKJe aOOb^ITts 15pf In/800oJins Opf out. 19,99
5.595-2.7/8/U, 5,595-2. 7 A^SB
3 pole 2.7Kh2 wide Upper sideband- Ijnpedenoe SOCW-ins 15pf ln/800oht© Opf out, 19*99
5.S95-.500/4, 5-59S--500/4/CW
4 pole 500 cycles wide CW. Inpedance SOOotms 15pf Xn/aoOohms Opf out* 19,99
9,0USB/OT
6 pole 2.7KH2 wide at 6dB. Inpedance €80ohms 7pf In/300olins 8pf out, CW- 1599Hz 19.99
KOKUSAI ELECTRIC CO, flechanlcol Filter #f1F-455-ZL/ZU-21H
45SKHZ at Center Frequency of 453. 5KC, Carrier Frequency of 455KHZ 2,36KC Bandwidth, Upper sid^Dand, {ZU} 19,99
li^wer sideband, (ZL) 19,99
CRYSTAL FILTERS
NIKKO
TEW
SDK
TYCO/CD MOTOBOIA
PTI
m
pn
OGMIECK
FRC
FILIBCH
FX-07800C
FEC-103-2
SCH-113A
1F-31H250
001019880
4884063BO1
5350C
5426C
1479
A10300
E3^XF-15700 2131
7,8^s^z
10,6935MH2
11.2735MHz
CT 3179,31013
10.7MI2 2pole 15KHZ ba«3width
U.TWIz 2pole ISKHz bandwidth
12MHz 2pole 15KH2 fcandwidth
21*4^H2 2pole 15KH2 barxiwidth
10,7MHz Spole bandwidth 7,5KHz at 3dB| 5KHz at 6dB
4SMHZ 2pole ISKHz bandwidth
20,eMHz 36KH2 mde
CF 7.825MKZ
?10,00
10.00
10.00
19,99
5,00
5.00
5,00
5-00
20,00
e.oo
10,00 10.00
'«-»•«#««••
CERAMIC FILTERS
AXEL MUKATA
NIPPOK
TOKIN WTSUSHIBA
4F449
TO-OIA
TCF4-12D36A
BFB455B
aFB455L
CFM455E
CFM455D
CFR455E
CFU455B
CFU455C
CFU455G
CFU455H
CFU455I
CFW455D
CBV455H
SFB455D
SFD455D
SFE10,7MA
SFE10.7MS
SPG10,7WK
IF-&4/CFU455I
LF-B6/CFU455a
IF-B8
LF-C18
cr455JV^PU455K
^X:-L455K
12.6KC Bardpass Filter 3dB bandwidth l*6KHz fron 11.8-13,4KH2
455KHZ4-2KH2 bandwidth 4-71 at 3dB
455Kf324-Uaiz bandv>ldth 6dB min 12KH2, 60dB itax 36KHz
455KIIZ
455KHZ
455KHZ 4-5*5KHz at 3dB
455KH2 -1-7^2 at 3dB ,
455KHZ ^-5,5KHz at 3dB
f +-8KHZ at 6dB f -l-lGKHz at 5DdB ■I-10KH2 at 6dB , +*20KH2 at 50dB , ^-8KHz at 6dB , -I-16KHZ at 60dB 455KHZ 4-2KHZ bandwidth 4--15KHz at 6dB, 4-30KHz at 40dB 455KHZ 'f-2KHz bandwidth +-12,5KHz at 6dB > 4-24KHZ at 40dB
455KHZ 4-1KH2 bandwidth +-4,5KH2 at 6dB
455KHZ -i-lKKz bandwidth +-3KIIZ at 6dfl ,
455KH2 -I-1KH2 bar^iwidth -J-2KH2 at 6dB f
455Kliz 4-lOKHz at 6dB , 4-20KHZ at 40dB
455KHZ 4-3KHZ at 6dB , 4-9KHz at 4adB
455KH2
455KHZ 4-2FKZ , 3dB bandwidth i,5mz ^-iKte
f +^10KHz at 40dB +-9KHZ at 40dB +-6KH2 at 40dB
10,7MHz 280KHZ +-50KHZ at 3dB
10,7iyiiz 230KH2 -i-SOKHz at 3dB
iO,7MH2
455KHZ 4-lKHz
455KH2 ^-iKHz
455KIIZ
455KHZ
455KHZ 4-21012
455KIIZ
650KHZ at 20dB 570KH2 at 20dB
10 , 00 5.00
10.00 2.50 3.50 6.65 6.65 8.00 2,90 2,90 2.90 2.90 2,90 2.90 2,90 2.50 5,00 2,50 2.50
10,00 2.90 2.90 2.90
10.00 5.00 7.00
«*#«««•«««««•«'■'•••»«#««»»*•#»«#«••««•«*««#*»*«««««««••«**««#«««»«*«*««««•«»
Pa^^ER OUTPUT 1.6W, 68K OHM IWiTT BMJLABT
SPECTRA PHYSICS INC, Model 088 HeNe LASER TUBES
BEAM DIA. ,75MM BEAM DIR. 2,7MR
lOOOVDC 4-lOOVDC At 3,7MA
ROTRON MUFFIN FANS Model MARK^/MU2A1
115 VAC 14WATTS 50/60CPS IMPEDmCE PROTECrEI>F
loscm at 60CPS THESE ARE NEW
Toll Free Number 800-528-0180 (For orders only)
BKJ STAKTmC VOLTAGE DC
$59,99
8 sera at 50CPS
(^^1^ elect roi|ics
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
$ 7.99
"Atl parts may be new or suffilus, and pans may be substituted with com parable parts \l we are out of slock or an iterrt '
For information call: (602) 242-3037
112 73 Magazine • June, 1984
HEWLETT PACKARD SIGNAL GENERATORS
606A
605 B 6DSC
608E
6l2fl Bl^A
6i6A/
&OKHZ to 65nHz In 6 bonds to 3v Into 50 ohrn^,Bullt-m modulation,
+-12. Output ievel adjustable O.luV crif&tQl caltbrotQr.400 -lOOOHz
Some as above Out opej'<]tion with HP
hcis freauencv control S708A S/nchronUer.
feature to aliOK
lomz to 'J&OflHz^O-iuV-lV Into 50 onms.AH.CW^or pulse mcKl- ulotlon, calibrcited attenuator.
lOmz to 420MHz. O.luV-O.SV Into 50 ohms. '-0. 51 occurocy. bulU-ln crifstal coUbrotor, AM-CW or pulse output.
imgrovad vers ton of papular 50£CpUp to IV output. Improved stobll JtVilow resjduol Ffl,
S16B |
|
t 650, 0€ |
618B |
$1100.00 |
6iac |
J son. 00 |
620A |
t 375.00 |
62 OB 626A |
freauencv Qcc'urocy w't'th be used wtth HP 870SA
10MH2 to ^Sbmz in S bonds +-1L built-in crv5to] calltifOtor.Can uti useju wiiri nr e/us/* SynchroniserH Output continuously odJustabU from ,luv to .5V into 50 onms.
ASQ-1230MHZ ,o.luV'0.5V Into 50 'ohms ^caU brat eel autpyt.
900-2100MH; wjth mpny features locludlrtg caHbroted output and Gil modylatlon chorocEeristlcs-
ilij.50.00-
$1100.00 t ?50.00
* 5D0.OO
Direct reodina arsd direct control from LS to ^.26Hz, The
H.P.aitA feotures +-l,5dB collbrated output occuracy Trofn -3127dafi to 'dBm.The output is directly calibrated In [Rjcro- volts and dBin with continuous monitoring. Simple operation frequericv diod occuracy Is +-l% and staoilltv exceeds 0.005S- / C cJionse in ombient ternueroture. Colibroted ottenuotor is within +-li5dB over entire output dond- 50 ohm impedance unit has intemol pulse inaduiattDn with rep rate varloble from 4Q Hi to iiKH^^vorEoble pulsewidtiid to lOusec'Jond yorioDle pulse detay(3 to. 300usec),£Kterntii moduiotina tnputs inefeas ver- sotllity, "■■■■■■' % 375.00
LMX UBORATOIES THS-2 FLEXICOi HEADSTT,
tfiese rieodsets com wttti dotd to iicx^k up to o ICON radios ax) nuny other eaiitpieit. f^erfect for Airplmes , Helicopters ^ WoUe Rodlos . or Just tlie Telephone. l?iese Are Foctorv New fn SeQled Bo?ces, Limited Siooly Only $69.95
(3Vf«Hz
S/OBA
So™ OS obove but later inodel, * 600.00
J.S to /,&6Hz range, wi en calibrated output ond selection of pu]se-Frt or SQUore wave modulation. ( 600,00
Same os aboye but ioter model, $2200.00
7 to llGHz range, with calitiroted outout ond select lofl of
PUise-FM or sauare wave modulotion. t ?SO.0O
Some as above but later n»del, 42200.00
10 to 15€H2,10raw nutPUt power with colibrated output and pulse-square wove or F« modulotlon. ti^200.00
Synchronizer used with 605B,603F,The synchronizer Is o phase- ]ocS< frequency stpbllizer which provides crystal- oscillQtor frequency stobillty to i*30MHz in the 60SF signal generotor. Phase locking eliminates microphonics ond drift resulting in excellent frequency stability. The S70&A includes a vernier i4iJch con tuna the reference oscillator over a rortge Of +-0,25S permitting freoyency settabJIity to 2 ports in lO to the seventh, Provides a yery stable signoi thot satisfies many critical applltotlons. -^
{With ilP 606B or 60aFl t 350.00 (Withoiit) $ ^50,00
I
I
eic-io
NF-105F
$2500.00
t21D0,00
ELECTROMETRICS EMC-10 RFI/EMI RECEtVEfi
LoH freQuency onalyrer covering 20iiz to 50KHz frequency
range.ExtendGbla to 500 KHi in wideband mode.
Empire l>ev]ces Field Enten<y Meter.
Has HF-].05/TA.NF-10VTX.NF-105/TbNF-105/T2,NF-X05/T3.
covers WKHz to lOOQHHz.
ALL EOOIPflENT CARRY A 50 DAY GUARAHTEE. EflUIPnEl^T IS NOT CALIBRATED*
TERMS: DOMESTlO; PftptH, C.O.O, W Cffclll Gtiti
FOflEliJN:: P(«p«id <i'^y, U.S. Fyndfi., Monsv Ontar. or CoKhlara Chsck Only.
COJt.' AiCoepla-Ws ty tatephona at maH. Pflym«n( from tuBtOrtWr wiH be t?v Cash, Mona/ Onlaf, or Gashiier'B Chflc*. We s4b BCrtry B«r W* e*rtrt01 accept parBonal ch&cka lor CO-D-'e- C,0-P't V* Jhippml Of air aniv and IMu UniOd f arcel Se.'vlc*.
COHNRMUNG OnDEDS: Wfl would prefer llial conlirnnina flfdtfls nCt fcn Sent ifter a- telflphocw onSar has been piacedL 1^ company polhcv iiecesSFtaios i confinminfl CMdar, p1aH«e maifc "CQNFIftt^lHG" ttolflly w Ifm oftter. IT problerw ck duplrcile B4ilpmHn1a ofr cur aw fo *rt efdir which is not proporiif marksd, thH cualpfnar «r|N J« tipl^ rBsponaitle !or any diaroBS incurred, plus ■ 151/fc r&£lQoh. charo* K^n the relurnBd part^.
CAEDfT CAHDS: We are now accaptrrjtfl MA;STf RCARp. VISA, AHD AMEfflCAN OPRESB
OATA SHEETS: Whan we hava daia aftwls In utOC* W 4»vtC4S wi -Ml] iupfily irwtn wJlh Iha ordw.
DEFECTIVE HATEHIALSf A4I' ctaimB tor deracllw malerlala mu«l tM cnMt wllM» 30 DAYS aller r6delp4 «r th« part»l. A1I £tilma mmst iriclurl* Iho thlective matanal Jlor tpsling purpoaeek 4 *i}p^ fll Ovr i'Tyijits, ind a return authWlMtfon number which must tn obUirt^ priOf lo shipping Iha mare-TiarKJlM! Pack lo us. Tfti* c*n b« Obtafnsd by caJlina (902!i S'S-SAtS or aending lia ■ poalcard. Du* 1<j MamuPacturer wananjiaa we are unable Ms nfrpl^M ^f it*«* Cnftdlt <3n km^s wlilcli Jiaw been sokterad to or H«vh besn flllared in *ny way. AH jattifn Items mual tw pajq*^ propsrtf Of rt ivIH voia tit wKrraritlea. We do not liaNnw iflapofnaJbilHy tor ihhp- pInC ti^iS handling Ctiargaa Incumad.
OELIVEHY: Ordnn are uaually ahippad (h^ ^am^ 0t\f Ihffy urt pj«c«d Of ttw naxl business day, unlssE we ana ouf of atoctt hi an i(*ffi. ThB cuBiomar wrll be notiriad by paei carcf it tiva ar* ooIaq cu bikCkOflSer Ih* iEein. Our normal atilppJng method la UPS of U.S. M^il ^pQrK5l<>g en size cr the weight of the packa^. taat ^quipiiwyhc !?■ rthip^^d Only by ai^ ar>d is 're^gl^t collect, un^eaa pr\Qt arraji{]itm^nila nave been made and ■ppnowad.
FDHEiQiN OftOeftS' AIS lorci^n <?rt}ats muat b6 prepaid wllh a. Caahl'ar'a Check, or Monay Circltf maM cut In 0-$. FuNQS OflLT-
ffta are sorry bu1 C.O.O. la fmi avuiiab^b lA twal^n <;oi]inlflea and lalfers of cradit a^a ueva^^apla&ta a$ a tQnn or pa^rrtant Fiirthv \T\foiniaiiQn la AMailabl« on rKfus^E,
HOIil^ Monday ttifu Frtdiy 830 a.m^ to 5fl0- p.m. Saturdays 8;30 a.m. W *iXi p.m..
IMSURAMC^ Plea» ihClUd« 25c TOf AflCfi additional HOQJOO over (IQClOO, OPS ChNLY. All lnaiH«d pachagaa ana ahJpfwl thru UPS only. If yoik wilth 16 !>•*« rl 4hi|3(Md tfirtiu^ the poet oriica thete ia a ^.OD rea which Is sddltlanaJ to tha ahlppJng, handllna u^l in- auranca.
OPEhl ArCCO^MTS; W» n^grsl Ihat wa do not jaaus open accounte.
OfiDEft FOtlMS: N«W OfdAf lOfms ara liKluded wlin aecli order tot ymir eonvanJenca. Ad(llt1(»nal ondar Ewma ac« «vtll«t!l« on raqti«fit
PARTS: We reservs the right to substitute or repEace any llflm with a part of equal or comparabla
spticificatian.
POSTAQ E: M I n i mu m 3h i pping and handU ng i n the U-S,, Qaoada, and Mex Ico J s M.OO for flrou nd shJi> ments, aJi otticf cciintrisa Is $5,50. Alrrat&a afe avalfabia at the time of yourofder. Ail foreign orders please include 25% of the Ordered flfnount for shlppina and handrinc. G.O.D.'s are ahlppad MR ONLY.
PREPAID ORDERS: Orders must be accompanied by a check.
PfllCES: Pricfts, are subject to change wItlHHit notica.
PURCHASE OflDERS; W^ accept purchase orders only wHen theiy a/a accornpanleci by a cf^eoK,
RESTOCK CHARGES: If parts Am returned to MHZ ELECTRONICS, INC. due to custdmar error, the cu stonier will be held responsible for all le&i incurred and wJIt be charged a 1&% RES-TOCK CHARGE with the remai^nder iin Ci^EDIt ONLY- T^e following rnu^t accompany any feturr>; A copy of our invoice, returfi authorizatton number wfiich must bo obtained prior (oslnip-pInQ the mafchandJae back. Returns musi be done wl^lhln 10 DAYS of receipt of paroeL Return aulhOfization numbers can be obfained by caElinf} ^602) 242-d9l6 or notlfylne ja by post <iAf± Ratum authorizatlOfiB witi not be given out on our SOO numtwr.
SALES TAX'. AR^^QNA residents must add 6% sales la^^ unless a sianetd ARIZONA resale tax cu4 is Currently on file witfv us. All orders placed by persons outside of ARIZONA, but d&l I veered to pV' sons in ARIZONA are subjeot to the S% saiies tax.
SHORTAGE OR DAMAGE: A4i ctaLma for at^ortages or dajTiagaa must be ^^ade withfrt 5 DAYS of receipt of parcel, Clalma mu&t JncFude a Pdpy of our involve, along with a ratum ajthorization number which can be^ obtaEnad by contact Tng us at (602) 242^916 qt sending a poet card, Authori^a- lEona car not be on our KK) r^urrb^r. AH Iterns mual be property packed. If Hems are not propefly sacked make sure to conlact the carrier so that they can come out ancf Enspact the package before t \b returned to ua. Customers whl4:h do no< notify ue within rhis time perloo wtll be held responsible fof ihe entire order ae we wiJi consider the order complete.
QUR BW NUMBER IS STRICTLY FOR ORDERS ONLY (800^ 52S41B0. llS^FORyATION CALLS ARE TAKEN ON 1602) 242-BOie Of (602) 242^1037.
t^4B
electrofycjK
2111 W. CAMELBACK ROAD PHOENIX, ARIZONA 85Q15
''All parts may be new or surplya, and parts may be substituted vwJth cornparable parls if we are out oi stock of an if^m/'
Toll FrM Number S00*52S*01M (For onl«re only)
For rnfomiatlon call: (602) 242-3037
PRICES SUBJECT TO CHANGE WITHOUT NOTICE
'See Lfst of AdverfrBsrs on page 1U
73 Magazine • June, 1984 113
ADVERTISERS
To receive full information from our advertift- ers pleasa complete the postage-paid card.
ft&lio.
Pm^ fLS. Noi
PmQM n. S^ ftOU
PftQ* fL & No.
P«Qi
t?B AcsCommuniCAtlDfiaJna.,.. . ,.SII 127 Acfvaoc«d Comput«f Qonirols
117 AEA/ Advanced EioCtfOOiC AppH cations .*.,«*,.,*.*...«'S5
20 All EiBCtmnieM ... ...... .5&
211 Amateur Acc^msorles . . . , ^ . , , . ,S9 * Amatmir Oommunlcaiiorts, Etc.
243 MmmimxMIMBS^i€ Eleclronics
IS
47S
141 346 276
»•-••*-*■•»••
334 Afn^don Assoclstos ,,,........ 19
109 AnaiogTectinolDffy ,„*--,..*,>flO
71 Applied Invenlion BO
2^ Austin Custom Antennas «1t7
266 AzimiilliCofnfmifiicetions Coip.
202 e&UEntfnwflng , 53
Barker iW11 1 lamaon ..,„,,,,. 14 305 Barry E)ectfofiie$ , . . . 37
* Bill Ashtry 4 Son , „ . . 116
* Bireti H HI s^\m ,,,.,. * , .as
* B\ ackftbur g Gfouf* .> -_*^ ^ - . * * 24, 72
Bfitt s 2 W«y i - - , . *^ ...16
Buttern ut Etectrofiics »..,,,,,, *7t CE EngineefiriQ, IfK « *. « . . * .32
111 CeCoCommurti cations .S6
480 Com-Rad IrKfustries ... ^ .... .. .SO
89 Clutterfree Modular CofiftCMtte
13 Colnfntofflatlontl 103
14 Communlcaiiona Concepts. Inc,
nai ■■ I I ■ . Id »■■■ ■■ BO-aB ■ ibj ■■-■rSl
18
4ai
29
99
151
31 271
■
33
482 460
123
274
275
36
S3
278
483
Communications Specialists. Inc.
66.67
Computer Tmd^ ^-.^.101
Connect Systems Jr^c ..... 33
Cushcraft Corporation........ .57
Data S«fvice .101
DiffimtAudla ................. 13
Doppler Systems .,--,.*:....* -7S
Electronic Specialists. Inc. . > . . .47 BecirDnl€Speciallats,lrtc. .....91
Esoteric Erigineerir^g , „ 101
FoX'Tango Corpora* Ion ..,...«. 103 Fox'Tango Corpof atton ....... .OS
G LB Electronics ..._,.,., 64
Grove Enterprises 121
Hai"TniiniK ^,,. >.l. .»*.,, ,..4 ♦72 riam Ma?t^T9P63 ■•■*«*.««f< •^S
Ham Radio Ovtlel 3
HamtTi3fiics, NY ».... ....128^129
HamtTCmics. NfY ..,.,,,,.„,. ,90
Htandi'Tek . . . . , ,.,.,,,. .80
Hofimn Printing Co. 101
Hustler, Inc.. .... . . .119
ICOM ..Cov.lJ
Kenwood, 7.a,9.92,Ccw.!V
322 Lftrs«n Antennas .7*
485 Larian Antennas ..,,.,,. ,90
82 MCM Communicatiorift .... 24
477 MCW Communications ... 91
9 MFJ Enterprises 56. S9
48 MHi Electionics .,...,..,. 104-1 13 54 lAagnum Oistfibutors. Inc. ...... 56
" MIcrocomputef BusinMS
Applications ».. ..,. ...........103
Micro Gontrtri Specialties . . 123
Micfolog Corp. ... «..««... .41
28
•«4i4<l *»■*«
IntematEcnal Crystal f^fg^ ...... 117
JAL RadioComm. ,,,......,,., .46
Jinx Electronics . . 19
Jo*in VestyCo. ............... .90
ir Magazine .82
KLM Electronics , 77,91
Kantfonics 52
49 SI
* M^raQe C^nvnur^catrons 270 Mouser Electronics .... 412 Nemal Elect ronk^ ..... 137 Nul$ A Vott^
PC Electronics
4 Parsec Communicat ions . . . 484 DCD Marketing Services ...
RF OaJA^ Udl ■«•«*»« i. «•* . 277 RFProdyctS .*..*>*,*
6 1 Radio Amateur Caffbook^ Inc. 454 RaOiottit . , . ,
Radio Wefehouaa ............. ,32
268 Ramsey Electronics .....*...* »127
62 Ramsey Boctfonics ........... 125
487 Regency Electronics . 93
Rotten l.ee fine Qoi'd ,...,..,.. .65
RC/A/^ MaQa2;in^ ,♦**,♦,.., .51
73
Adyeflising „ 100
Dealer Ad ....»*...*.,, * 123
..53 .101 ..47 ..17
..69 ..91
, ,85 .123 ...4 .119 ..79
500
BOOKS, etc.
AMATEUR RADIO/ELECTRONICS TTTLES
Catalog #
BK7307
CT7305
CT730e
CT7313
CT7320
CT7325
CT7394
BK7308
BK7321
BK7322
BK73^
BK7312
BK7a40
aK73e3
eK73lO BK7302 BK7351 BK736a SG7357 SG735e CT7300 LB7360 LB736t LB7362 LB7365 BK7315
Ittm
Betiind tha Dial
5 WPM Code Tape
6 + WPM Code Tape 13+ WPM Code Tape 20+ WPM Code Tape 25+ WPM Code Tape Code Tapes (any four above) Contest CooktxK34(
A Guide to Haxrr l=tadJo Hot3tjy Computers Are Here Uving on a Shoestring The Magic of Ham Radio The New Hobby Corriputers The New Weather Satellite Hsndboolc
Owner RsfiAlrof Radio Equipment Propagation Wizard^s Handtxx)k SSB. . .The Misurxiefstood Mode VHF Antanna Handtxok Study Guide^ovice Class Study GulcM^enerat Id ass Novice Study Tapes (Set of 3) Test Equip, Lib. V2— Audio Tester Test Equip. Ub. V3^ Radio Equip. Tesi Equip. Ub, V4 — IC Test Equip. Test Equip. Ub^ VQ— Vots. 2, 3, & 4 World i^tepealer Atlas
$
Price
4.95 4.95 4.95 4.95 4.95
Am
15.95 5>95 AM 2.49 TMI AM 2.49
7JSS
sm
5J50 5J3I5 AM 6.95 15.96 1^95 1JS %M AM 2.00
MICROCOMPUTER TITLES
neifi
Annotated BASIC Vol. t Annotated BASfC Vol, 2 inside Your Oompytar Introduction to TFtS^ Data Flies Kilobaud Kiassroom Mach. Lang. Subroutines fof CoCo Prog, fc^ Elect rt>nlc Circuit Design BK7400 with Apple disk BK7400 with IBM PC disk BK7400 with TB&dO disk The Seleclric™ Interface Some of the Best from Kilobaud TR&eO as a ControHer W&eoWBO Assembly Lang. Ubraiy Understanding 4 Profl. MJcrooomputers
SHELF BOXES
CatatoQ f Hem
aXlOQO Shelf box-1
miOOl Slwlf boxes— 2-7
BX1002 Stielf boxes— 6 and up
Catalog #
BK7364
BK7385
BK7390
BK7398
BK7386
BK7404
BK7400
CC74O0t1
CC740012
CC7400t3
BK738a
BK7311
BK7394
BK7395
BK7382
. '« m.'m *#•■■■»
Am
m
197
m
438
»
224
486 104
136
203
196 179
311 90
79
80
+ ■««+'
.IB, 121
i V tl Hi « V I
Mailing Uats ««.«*« Ilovbig..... Subscflfittofts ...........
Saba^Sa Expod Corp,
Satefltte Video Systems . . . SimecCompaity .........
Smith Software SystHTie . . Specirutn Cocnmirnications ... * . ,©1 Spectrin International J nc .....56
SpkSer Anienn>a . ... i ..« ...... * .^
r . . * nSMt
f i' . * t m.m.m •
. ft . ■«
103
Hi
_..,B2
03
Teltone ......
Hie Hanonack .....--.
Thompson Software - . , .
Tfiorryx Industries
Tucson Aniateur Pacfcei Radio
Unicom Bectranica ,,•..*.,, .„29
UfiNeraat Amateur Badki .47
Unli^efsal Beclronica, \nc ,. ^., . .100 UMversily Microfilms .......... 101
Van Gotileffi EnQineerifig 64
Vanguard l^^be ..,,..,., ^93
VoCom Products Corik. .,...,.. 121 WINNN Antennae ..... ,«*.««,103
Wacom Producis . . .... lift
Weetcom .,..,,,,,,,,.,,.,.. . W
Westech Electronics^ Ino. 79
Western Radio Eleclronlca 87
Wfieel«r Applied Ro^earct^ Lab
101 Williams RedTo Sales ,.*...... 101
Woodall & AssocJates 101
Yaesu Electronics Coip. . . . .Gov. Ill
Price 10.96 10.96 1Z97 24.97 14.95 29.97 14.^ 24,97 24J7 24.97 12.97 10.95 12S7 34 J7 10^
To Order
Price 2M
1^ea. l^ea.
SNIPPINQ AND HAM^ DUNQ: S1.50 for the nm book. SI. 00 for each add I* tlonal book for US delivefy and foreign surface, S10.00 per book for for- eign alrrnal). Orders pay- abla In US dollars only.
Complete the postage paid card, or itemize your order with payment or complete credit card In- formation (ir>clude post- age and handlir^ to: WQ Books, ATTN. RetaH Sales, Rte. 101 and Elm S1-, P&tertxiroiii^ NH 03458.
114 73 Magazine • June, 1984
Evaii»vllt«, IN 477tt
WINI!
IHMaiB^HAaHiABil
Pnc^M mnd Av*i/»tittty Subtle f tc Change
OPIfC-S* or V>^£a SoftMVff FmcksQE C*ll
¥mrf L«r9« >i«i^ dI AC A PfMvclt- CaK for tMK«vnl PrtcAnit
HD73<lCf7 14 Iti Rotitor UttO Smell Efevaiion Rotator A MERIT RON
AL'80 QSK Amp
ASTRQN
HS7A fr? Amp Fo^&f S»jpply
AS^OA 7 ^ >0 Amp Po^irar Su^Dly
R&12A 9^1;? Amp PoMrer S^^pEil^
RS20A 1ft 30 Amp Riiver Si/ppL^
RS20M iE-aO Afn^ w^rn«t*r
RS3&A ZS3S Amp
RS3SM 25 :S5 Amp w^mvfw
fESSQA 37 » Am|]
RSSOM: a? SO Amp mmelmi
AZOeN
PCS4Q00 3M mobl'le rjg
BENCHER
BY 1 Piidd\tiBy-2 Chfnme
eUTTERWUT
HF6V BO lO Mv^ST Verlic«l
GUSIiCflAFT
A3 TrtbvuSv 3EL
A4 Tni»nif«r 4EL
32- 19 Su|M« BoOfner t9Ci JW
DArWA
CN-5i20 1 i-OO MHi 3WfVP«r Mil
CN^eaoa is ISC MHzSWRlf>wr Mir
CNe^O l4a-4SCl MHz SWRiPwr Mir .
CN720e 1 8- 1 50 MHz SW WPwr Mir . . .
ENCOHM (SANTEC)
SdTittt 142 up - ^ Ht r . . * ■■
SafltK 12^ up - 2?0 Ntif - . .
S«fitfic 442 up - 440 Mh£ . .
KAt
cm 200 Cofnpuief lrTt«f Ijic4
Cn 100 Ccynpifter lnl«rfK«
Hr^AIN
TH7 DX3 7Ei Tfibtndef
THS MK3S 3E L Tribander
Explorer ^4 Tri&ander
CD45 as aq tl I^alatDr
Ham W 15 sq. rc Rolatcir
TZX 20 iq ft flotaTOr
Ff«i Shipping on ■■] Crinhup Tow«n
0%cv AmiennKS m Sloe* C^l for Prrc^a
KANT RON tCS
TTw LfH«dl*« n. Ifnt h*mn4 nwm corapul«<r trttarfsoi lof
CW. RTTY. ASCI) Saftw^rs A«iilib4« Iw V^ClO^ C-M»
AFfLE. ATARI. tfl*OC, TJW
AmfoF Satmrar* Now AfBtl*bl«
KEN FHQ
KR-500 Eittviticin RofAtor , , ,
LARSEN HT
NiA 1 50 MM5^e Wivi £Mnnig
WFJ
i22fl r««»w Compy1»« inl«rf#cfi w^amTO^
tW4 Nb a Comt _ i«t kiMHt ce
airr; Iwr ^^^^^ iW.OD
vary tA»f« Stock afiiFJFcwIuel^, Cam tot Dl»CAif\ I Pitete^,
MiRjuac
ligMl
CoAlr
S^95,DD 299. QD
S37VCn 225 SO
S439.00
I at. 00
. . 199,00
44D «^H; Amp
IfCHN 440 MH2 AlTlfl
8t014 1(K160 AmpfFfttrnp.
B3014 :}0^i60 Amp/Prrirpip.
SHU RE
444DDe*hMic
TEN TEC
Tl\E 'a^tutic
10 docar Tr3n«¥«fior 15-& ' Jli H^r.jn«4{j: i TOM TO HY FOWEH l-L 100V J r : "?OiiV^eamp^ h-L tflOV I- ■- ... Priwflp
Hi9oy laeow uhf Amp.p t i-^c
HLoi^ lO^BOW PreAmp HL45y )0-il5W (JH F Am p^ie if TAESW
MO Cianopyt'er AieI«* Kcv* SySlttti FT-7576XSup«frBuy FT 726R Trpband Xc^r FT ^0^R Mew H T
si?9.ai
245.00
199 00
1S5.00
# lel»phon« buywt will receive a turprite gtrt \n theli package.
# Irvstore drowtngi each hown Come and reg titer to wlnil
# Orond prfie for In-sfore drowtngr
IC-02AT
2-Meter
Digital Readout Handtield
# No purchase necessary to register
^fof ln-s!ore drawings.
# Special In-sfore prtcfng
# ICOM Personnel to demonstrate new
equipment.
Refrethmenti wfit be served.
See the new line or COM equipment
New equipment available for your Inspection and purchase.
n 1
■A-
1
Saturday. JUNE 9 , 1984 9:00a.m. til 5:00p.m.
ICOM DAY!
Send SASE for our new & used equipment list MON'FRI 9AM 6PM * SAT 9AM 3PM
ICOM, WILSON, KENWOOD
and MAXON Cprnmerefal
EqiilpmenI Avatlsbte
USED EQUIPMENT
This list was compiled 4 it a4 Our used
equipment changes daily. Please write or
call for our current listing.
llAollO^«^
Spkf
AEA |
||
mrm rewseh .... |
^ + 1 |
. IIZS^DO |
ASTRON |
||
R5 71 T «»p p.$. , . |
.■ ^ * |
. t 39.00 |
AZDEN |
||
PCnOOO 2 wtr . . , |
. 1209.00 |
|
PCS 2100 10 mtr . . » |
. 175.00 |
|
DENTRON |
||
HLA 35DD w/10 mtrs, » |
. $549.00 |
|
GLA 10006 w/10 mtrs . |
. 269.00 |
|
WT 3000A Tuner . . . |
. 225.00 |
|
MI ZOODA Tuner . , . |
. 159.00 |
|
Super Super Tuner , , |
. 119,00 |
|
DRAKE |
||
TffTT?^ |
. test). 00 |
|
R7A RCVR ..-.,. |
.1,025.00 |
|
RV? VFO ,.,.,, |
. 89.00 |
|
WS7 Spkr ...... |
35.00 |
|
7077 Desk Mic . . . , |
35.00 |
|
TR4, RVa, AC4 .... |
. 340, 0& |
|
TRB, RV6, AC4 , , . , |
. 399,00 |
|
T4X» ft4A, AC4, MS4 . |
. 3Z5.O0 |
|
m 2000 Tuner .... |
. 179.00 |
|
ENCOMAI |
||
Stn li^Hhz ..... |
. S!S9.00 |
|
HAL |
||
nt?ao, RBzioo . . , |
S675,00 |
|
HEATHKrX |
||
^77^ rm. Amp . , . |
$550.00 |
|
SeiQ4A, CM, f.S., Spkt |
p . . , |
389.00 |
SB634 Console . , . |
99,00 |
|
SB! 02, PS, CW , . . |
325.00 |
|
HW101, PSp CW ... |
. as9,oo |
|
HW101, PS, Spkr , . . |
. 250.00 |
|
S8630 Console ^ . . . |
69.00 |
|
S1600 Sptr . , . . , |
25.00 |
|
SA2040 2KH Tun«r . . |
U9,0fl |
|
HW2G3€ 2 Htr . . , . |
!00.00 |
|
PSiflOO P.S., Sptf, Clocks . , |
169.00 |
|
HWa ORP Kcvr * . . - |
* * i » |
BS.OO |
SBlOl . PS. CH . . . , |
. . * i |
225.00 |
FLlt4
(COM
751 OeLuite Xcvr .
720A, cv. m
740 Xcvr . . . « 740, Kc:^r . . . 740, Interna! p^s. 740, Internal **.S, 3AT220rttK2 . . . 251 A 2n All Mode 245 I Mtr . . . SM-2 Desk Hie . . HM*8 T.T. Mic . , AG*1 UHF Pre Anp KANTRONiCS The Interface , . Vie 20 NdMiext. . Vfe 20 Namtoft . TRBO-C HafBsnft . . KENWOOD
TR-5130 AH Mode, T.T Ts azos , . . , ,
TS 820
TS990, R599D . , TS7Q0 Sp, VFO SP 70 Spkr . . . AT 130 Twfier . . TSS30S, CM ... TR2400, Clip, Extra B.P. SWC-24 Spkr/mc . ST-1 Base Chgr , MC30A Ldv^ Z Hie , RM76 Remote , . SC'5 DC Chqr . . YG455C SOOHz (630) MFJ
T?5"Super Heyboard/fitty 1224 Interface . • . , 721 SSB/CW Fnter , , , CWf-a Filter
* I
Hie
-t I *
« *
11,050.00 . 689.00 . S99.00 . 629,00 . 699.00 . 789, 00 195.00 . 399.00 . 169,00 . 29,00 , 40.00 . 59.00
, I 79.00
. 70,00
. 35.00
4S.00
. $365.00
. 1539,00
. 489.00
, 450.00
, 499,00 24.00
. 9S.00
. 525.00
. 179.00
- es.oo
. 59.00 20.00 = 50,00 . 25.00 . 65.00
. 1199.00
. 70.00
40.00
. 25.00
SWAN Astro 150 700c)c, P.S, TEN-TEC
OMNNCyCW
OMNI-D/B
Delta, NJ, . , . , . Triton IV. CM, N.6. . Argonaut (509) . . . 215 P.S. /Spkr .... 2BZG P.S. /Spkr . , . 225 Argosy P.S. , . .
¥fo * Del t J
234 Processor , , , 208 Filter . ...
1A P.S
645 Keyer ......
YAESU
FT-1D2 Xcvr , , . , .
FT*901 DM . . . . , ,
FT-tOUE/CW
FT225ftO All Node . .
rr30io/FP 3010 . . .
FR6-70OO Rcvr .... F12100 F Amp ....
FL10T/FR101
YC 601 Display . . . Land Liner Phone Patch FT227R 2 Mtr , , . »
YD 148 Hie
FT202 H.T ,
PA 3 DC Chgr . . . . .
XF 30 C CM Filter , , , PF 757 P.S. ......
MISC.
DiaMd CNA 2002 Autot OiaMa CNA 1001 Autot Panasonic Camera Zoom Lens . , , . Sanyo 9" Honltor . Hygain TH6DX . . , Galaxy 5MK2, P.S. . SaUiiyVFO ....
01302 Hcwr ....
0X2O0 Rcvr , , . . Wilson 1402 or U05 E^mac 6374 (New) .
tiner uner
... . p . . i «
» * »
S369.00 350.00
S625.00
429.00
4Z5.00
325.00
225 , 00
1Z9.0Q
89.00
89.00
129.00
69.00
19,00
19,00
S5.00
S569.0O
569,00
449.00
479.00
525. {»
265.00
399.00
499.00
125.00
35.00
149,00
29.00
99.00
25.00
25.00
115,00
1325. OC
225.00
75.00
59,00
75 . DO
189. DO
199.00
69.00
239.00
125.00
69.00
U5.00
Send SASE for our new St used equipment MON-FRI 9AM-6PM * SAT 9AM'3PM
list.
tCONt, WfiSON. KiNWOOD
and MAXON Commtrclil
Equipment Available
I
i i
30 DAY WARRANTY ON USED EQUIPMENT
BmER'N'BUY
73 CLASSIFIED ADVERTISING
Individual {n<HM:ommercial}
* *■ V ^ * 4 *
RATES
. .......... . 50c p^ wOfd
Prepaymsnt try cfiecK or monffy otder Is mqulnd with your ad. Ho dta€<HJfit& Of commissions mm available. P1««3« maKe your oayme-nt to 7J. Plates fo< multipte insert k>RS are available on r«qti«st.
ADVERnS^HG COPY
Adyertiming musl pertarn lo amateur radio products or services. No special layouts or positions are possible. Alt adverltsmo copy must be sub>mitted type- writtan (dogble-spacad) and must lr>ckuda full naa>e and address. Copy limited to 100 words, maximutn. Count only words in text. Address, free.
73 cannot verify advariising claims and cannot ba held responslbia tor claims made by ftte advertiser Liability will be limited lo msNing any necessary correc- tion In the next available issue. 73 reserves the right to reject ar\y copy deemed unsultalHa.
OEAOUNES
Cof>y mual be fsceived in Petert»o(flugfi by the 5th oMhe *ecof*d fr>eH\tfi pre- ceding tHe cover iSate. It copy is rvcaived after the! deadline, it will b« schedute^ to run ttHit tdtiowirtg month, unifrss specifically profiibited by the advertisw.
MATOUALS
Send to Adveftisiftg OapartrrwiTt, 73, Elm Stfeel, Peterborougti NH 03458.
MOBILE lONmON SHIELDINQ. Free litera- ture. Eatea Engineering, 930 Marine Drive, Port Angele& WA 98362, BNB006
WAMTED: Cash paid for uted SPEED RA- DAR EQUIPMENT. Write Or call: Brian R isterman, PO Box ai4t, Mocthrield IL 600S3;{3l2}-^t-8dai. BNBDSg
MrUTARY TECHNICAL MANUALS for old and obaol^eti equl^^ment. so-page cata^ogt S3JI0. Military Teclinlcal Manual Service, 2266 Senasac Ave., Long Beach CA 9061 S, BN&M^
DRESS UP YOUR CLUBI Jackets, toe^ Shirts, hats, aportshlrts, etc.« with your to- go or we'll custom design, Weveiength Productions, 20-22 120th St., College Point NY 11356. BNB048
WANTID— your unused Teletype""^ re- pair parts, hijgti prices paid! Send SASE for Hat of Teletypewriter parts and sup- piles. TYPETRONICS. Box ea73. Fori Lai>- dardate I^L 33310; (305|-583-1 340 after tlW pm. N4TT, BNB052
WE ENJOY creating ham plaques, tro« phies, awards. Pse QSO. Prices p ship-
ping—low. Care— free. J S J Trophy, Grove Street, Peterborough NH 03458; (a03)-924-7804. BNB065
WANTED: Pffr1950 TV sets and old TV QUiO^ maga^irws. W3CHH, Box 20-S, Ma- CGfTib IL 61455; (309)^833-1809. BNB0G6
1SS4 WIRi & CABLE prices cut!! f CaJI Of write for latest listings. Certified Com- munications, "Jtm CB to 10 Meter IhKpla,'* 4138 So. Fan^ FrefT>ont Ml 49412; (^I6h924-i5ei. BNB073
ICV4/KP2 STATION. ST. THOMAS. Don^ testa/OXA^acatiOns, stnglea/ciuba^ Paul Murray WA2UZA. RO 4, Princeton NJ 08540; (20U3a9^309, ON BOSS
EMEKGENCV COMMUNICATIONS— An Organisational and Operational Hand- book, by K3PUR. A complete referertce guide fo( ARESfflACES and other putrilc sarvica groups, as reviewed In Daoambar -83 QST arad January ^84 CO. $995 plus |).50 P/H to: FDW Arts, 1394 Old Quincy Lane, RastOft VA 22090 {VA residents, add 4% tax). BNB0&9
DX HEADING HAPS for BostOh, NYC,
Phitadetphla^ BaJtlmore, Dot roil Allanta, Chicago, New Orleans, Si. Louts, Dallas, lA, \\'%M', $1.75 pp. 22'x34', SS.95 pfiL Specify city. Mniay, PO Box M7, Hainesport NJ 06036; |B(lfi^261<29«2L BNa094
STATE-OF-THE-ART. rugged, Iow*pfoft1e antenna systems. Helical designs from 3.5 to 50 MHz. ODRfts from 144 lo 450 MHe. Refer to 7^ magazine reviews In Oc^ tobef and Novemt>er, 1962. Com-Rad Ir^ dustrlae, 25 Imson Street^ Buffalo NY 14210; (7t«)-773'1445. BKBdOe
AMTVSTATIC DUST COVERS BY Cover Craft CorpofatlQiL Amateur radio, com- piitara> printers, disk drives, VCRs. Nevr or oldar models. Over 1.000 deaigns in stock and over 1 ,000,000 la use. Call or wrtte for brochure. Birch Htll Sales. PO Box 234, Pe- terborough NH 03458; (603}-924-7959. BNB097
FIND OUT what else you can hear on your general-coverage transceiver or receiver. Complete information on major North American radio-listen Irvg clubs. Send 25« and SASE, Assoc i at I on of North American Radio Cfybs, 15O0 Bunbury Drive. Whlttler CA 90601. BH&09g
MAQICOM RF SPEECH PROCESSORS- Add 6 dB of average output with genuine rf dipping In your Iranami Iter's l-f atage. Custom engme^ered lor Kenwood TS^12<9, TS*130, TS-430, TS'520, TS^530, TS-620; Drake T^X^ TR-7: Yaesu FT 102. Excellent speech quality, simple installation, af- fordable prices! SASE for data and cost Maglcom, PO Box 6552 A, Bellevue WA 98007. BNB101
ELECTRONIC AVOCATIONS™. Nonprofli service promoting radio hobbies SASE Arrtotd Tirnm, 2308 Garfield §304, Minne- apolis MN 55405. 6NB1Q6
FM SERVICE MANUALS- RCA, QH, Mo- torola, Aerotron, Alpha, Johnson, Kaar, DuMont, others. Reasonable^ Send exact modaf and description, L McLaughlin, PO Box 411, Mango PL 33550. BNB110
REPAIR, alignment, callbfation. Colllna written eatimata^. S2S; non-Cot lins, S50^ K1MAN,(207H95-2215. BHB117
WAflTED^IiACROTRONtCS M^SOO da- luxe RTTY system fot TftS-80, Sill W3QDS. 1744 Indian Woods, Traverse City Ml 49664; (6l6h946^3730 or 946-3042, BNB1 19
COMMODORE 64 disk based ham SGft< ware. GOf^EST DUPER— 1000 QSOsf band. Prints logs sorted by band, US call
PACKET RADIO
ASCII— USA/AX,25 HDLC CONVERTER
USA/AX,25 is the AMRAD approved digital format STANDARD used on amateur pack- et radio networks.
PAC/NET board only SSO-OO
Assembled/Tested. NolGs,90day warranty
Package qI ail IC s except 2-2716 EPROMs
•irii
PAC/NET SYSTEM
PAC/NET SYSTEI\rt $240.00
System Tested 4.5 x 6" board complete with all IC s and programmed EPROMs personalized for each purchaser. Re- qyires only single 8*10 volt Vi amp power. 1 year guarantee o* hardware/soft- ware/AX.25 standard RS232 serial ASCII at any user baud rataRS232 HDLC for 202 modem used for AFSK or direct lo RF equipment for FSK-
Custom SyslemB Custom Programming
Bill AsHBY
^^ AND SON ^J K2TKN-KA20EQ 201-656-3087
BOX 332 PLUCKEMIN N.J. 07976
area^ DX« aiid alphabet. Usts and eo^nta OTHs or pfftflxaa. S25.00 ppd. STATION LOG & OSL— 19O0 QSOs/fllalc. Prints "cafda" foi I«m ttwi ic a«ch. $15.00 ppd. INFO^SASE^of send disk and stamped ma[ler for FREE OSL bureau/addresa label program (approxtmately 2O0 llstlnga^my disk, $7.00 ppd). Harv Nebon KA9KUH, PO Box 736, Stevens Point Wl 544B1. BISIB120
DIOFTAL DISPLAYS for FT*tOta. TS^HOs, Coilllns, Drake, Swan, Heath, arKl others. Write lor IntormaHon, GRAND SYSTEMS, Dept, A, PO Box 3377, Blaine WA 9&230. BNBl2t
WE COtJLO run a bigoer md but than our pans would coat more. Duality pans at sensible prrc«a. Si amp brings fly«r. Mid- night Engin^ertng, RR, Maquon IL $l45fi, BNB122
IMRA~ International Ml sal on Radio Asso- ciation helps missionaries by aupplying equipment arKi running a net Tor therri datly except Sunday. 14.2S0 MHz, 1900-20DO OMT. Bf. Barnard Fray, 1 Pryw Manor fid., Larchmont NY 10638, BNB123
FOR SALE OR TRADE ror Hovica gear. B & K 2845 dtgitai mtftef, B a K 820 capacitOf tostef, Conar255 scope, Etco audio ganef- aior. All in excafcteni cofKlition and with manuals. Gerald Cushing, 817 l&Vi Avsl 5W, MiTiot ND 587^1. BNB124
WANTED: Model B0 10 remote vfo for Tem- po 2020 xcvr, Cflll collect <9l3)-267 1575 or CompuServe E-mail user no. 71336,1270. Will pay all shipping charges. Tim Gorman WAiLYJp 3758 Humboldt, Top«ka KB 66609. 8NB125
TEH-TEC ARGONAirr 515 with xiat caii- brator, noteri fitter, arwj fuP tan-meter C0perage In mint oondrtlorv S395. Also Tl m4 wtth Ham£ott packafa: S9& Heathltii uMATlC programmable Keyer w/powef supply: SSO, Heathkit model IG-2B color- bar generator with manual: $45. Jade Big- Z 4-MH£ ZBO S-100 CPU card with manual: S96. MIka Fauikner N9CBJ, RR #2, Box 294A^ Yorktown IN 47336. BNB126
WANTED: aulopatch, new or usod^ in good condition. No fhlts necessary. KSIIZ, Port RepuUlc MO 20676. BNB127
INTERNATfONAL lilORSE CODE TRAINER for your Commodore 64 or unexparxted Vlc-20 computer. Learn code or Increase your speed for that higher Ucen^e. Great tor groups or self-iraLnrng. MenU'driveri ^ documentation 4 random testa (letters only or with numbers) -i- adjustable speed (1-26 wpm) and pitch •¥ ability to enter a character and hear the Morse sound. 64 version has ihese additional features: 9 detailed step-by-atep lessons 4 ua«r-de- flned tesia -f adlustab^e volume and lest length {1-S ml nutaa}. Vic vers Ion: S6.00 on tape only. 64 version: $9.99. tape; (14.99, diskette. ACaL Software, Box 7« r49«r DeriyPA 15671. BNB128
ICOM AND KENWOOD OWNERSI You are daf mitely ml&aing out If you iSo not racaive our vary Informative newsiatlersl Fr&e In- formation! Send SASE {2 stamps) to Inter- national RadlO^ Inc., 364 Ki I pal rick Ave., Port St. Lucie FL 33452. 8NB129
BUY-SELL-TRAOE Iwtce monthly publtca- tkxil SASE for FREE issue. The Ham Bona^fdL 364 Kllpatrick Am, Poft St. LudtFL 33452. &NB130
09CM 10 "^O DnTER" Instant OSY. Desolvea Doppler and inversidfi. Satellite
116 73 Magazine • June, 1934
AUSTIN.
When only the best
will
• •
f
Taking the feading role in custom antenna design comes easily to Austin, With over 25 ^ears of engineering and consulting expe- rience, how could we offer you less than the best?
And our high performance solutions go beyond our popular MULTIBAND antennas.
There's THE OMNI sidebartder with hori- zontal and vertical polari^^ation. Or the AIL BAND SCANNER with high gain that outperforms the competitjon. And THE STICK, a broad band design for operation fronr> Amateur to Marine frequencies, just a sampling of the chokes available.
Whatever your antenna needs^ tlie winner h Austin.
Cat! or wrrte for product informatiiori . De^EerirrquirJes fnvfted,
229
AUSTIN CUSTOM
ANTENNA
P.O. Box 357 Sandown, NH 03873 (603) 887-2926
BEEPERS *
O* YOB KAVEN'T HHILBD OITB
YOU'BJB NOT LISTEHIHOS
Whafg a BEEPER? aomffElme& cUl^ & ^'oourteey baep," both FaxBoan BEEPETie add a gentle high fraqueney beep autamatlcally to the beginning of eft<3h transmiflalon and a low beep it tite and. "TaLt-OTer'' is a, thing of Uie paatl INTROEUCTNG EP'4 "The PRO" BEBFBH. Tne PKO Is fitata-of-th&'&rt beeping! Irwiludas a dlgitally-ppctgcaiti- mabia' tlmttt (us^ it for ID or ttmepuE wamlPg&U -ILO automatio "Slumber Mode" for long bAijtafy Ufa t9V bat- tery required— not included), mtieJ pragrammabl'e volume oontrol of th* uinlque dOuWe 4^15WP timeout warnliig. No BpesJteri UssB a pieso-tainHiJucerl
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YAESU FTDX 570, clean, good condition, manual, $325 and shipping. Also Halli- c rafters SX 146 SSB receiver, three filters, all xtals, calibrator, very good, $125, ship- ping. Bernard Poliock, 1330 SE Walnut, Hiilsboro OR 97123^ (503)*48'1SS7. BNB141
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MICROWAVE DISHES, Suitable for weather satellite through 10-GHz proj- ects. Spun aluminum, 81 -inch diameter, 24- Inch focal length, $99.00 each. (913)- 862-2703. Focti, 2730 SW 57th St., Topeha KS 66609, BNB143
Tr99/4a RTTY. Mini-memory required, Mark and space tones Internally generated, TU needed for receive, $17.95. Mark Schmidt, 4S61 Lark Dr., Qeale AFB CA 95903. BNB144
BURGLARY— Nation's number one crime probtemi Security alarm industry booming. Get In now. E-2 learn. Employment/busi- ness opportunities. Information, $2.00 (redeemable). Security Electronics Inter- national, PO Box 1456 K£, Grand Rapids ME49601.BNS145
I NEED HELP in jamming my implanted thought project Ion -image projection- sound simuEation device. Harry Haupt, 815 "D" Ave. Westn Oskaioosa lA 52577. BNB146
Ref^rififed from fbe Fedar^t RB^hiet
Reimbursement of Out-of-Pocket Costs for Voturtteer Administered Amateur Radigi Exaini nations
AQENCV; Federal Comniiiiiica lions CommUgion.
action: Proposed rule.
Summary: This document proposes to amend the rules to provide for reimbursement of out-of-poqket cogtp incurred by volunteer examinerFi and vclunteer examiner coordinators in connection with Bm^iteur operator License examinatians. Cost r^eitnbursement is necessary tor the volunteers in order for them to recover their prudently-incurred expenditures. Thfi effect of this actigji is to propose rules allowing cost reimburaernent.
DATES! Comments are due by April IG. 1984 and replies by May 1, 1904.
ADDRESS: Federal Communications Commission, Washington. D,C. 20SS4. FOR FURTHER INFOHM-ATIOhl CONTACT: Maurice J, DePont, Private Radio Bureau. Washington, D,C. 205^.
List of Subjects in 47 CFR Part 97
Radio, Notice of Proposed Rule Making
Ln the matter oi reitnbiirRETfiprU of out-of- pocke^l costs For volunteer administered arndteur radi[> exatninatiQnii PR Dockit No. 34-2&5. FCC 84-75.
Adopted r March 6, i96i
Released: Marcii 9. 1984.
By the Coninii&9,ion.
1. Notice of Proposed Rule Making In the above-captioned matter is hereby given.
£. The Federal Communications Commission Authorization Act of 1983 [Pub. L. 98-214: spproved December a, 19@3| smendedSecUon (4)(f)(4) of ths Communications Ac{»Mo provide for the reimbursement of out-of-pocket costa incurred by volunteer examiners and volunteer examiner coordinators in
118 73 Magazine • June, 1984
connection with the preparation, processing or administration of examinations for amateur station operator license. The American Radio Relay l^agnCp Inc. (ARRL) filed a Request for Agency Ac lion on December 7, 1983, requesting that the Cemmission implement the legislation by amending the rules by Order as so an as possible. Ho wave r^ since this matter affects a large number of people [amateur licensees and applicants), we are providing for notice and comment.
a. Our proposed rules would allow both the volunteer examiner (VE) and the volunteer examiner coordinator (VEC) to be reimbursed. Each amateur radio examination, except the Novice Class, 'is to be admin i^tered by three VE's. They may he reimbursed for the expenses they incur in administerinig the examinatloriK LikewisCi the VEC may be reimbursed for ita preparation and processing of the examination. The total reimbursement ^m each examinee, however, may not exceed 14 for an examination. It could be less than that amount, depending upon the circumstancas.
' 5#ctiDn 4[f|(4| WB« QmAnded by adding subparagrapii (J| as fotloivi:
"HI With respect to the accepiarcc of volunlary uncomfHeneated serviceB for ibe preparation. proccrstiAg or admlnialratlion of examinations for amateur slalion operator llceniei pursuant to Aubparaj^raph [A) or (B] oflhii paTBgraph, indtvid'UJiLe. or organizaUonB whict) provide or (in.nrdinatE 9uch authibrized votuitt^er aervicf^B JJ^By recover from e-xamineea relmburaflmenl for oiil-of- poc-kef i;o3ts. The tota] amount of allows bl* coal relmburjienifint p<ar examinee ahati not excetJ $4h adiupt^d HnruEilljr every [jsnnpiFy "I for c^lB^3;Ra in ihe Depart meni of Labor Cunuumer Price IrnJth.. Such JnctividuBiB andfic^gaj^isatLonB shall maintain re-cordfi of ant-of-pockel ijxpcnda tarts and atialE certify annuaUjr to the CommisBion thai bI] cosli for wttiich i-Btmbiirntineilt wsi i^bifiintd w^tt necessarily and pnddenlly ijicurred,"
^None of the proposed ruEcB applies ts the examination for the Novice CIsaj license. Sena lor Quldiivaiar, ihfr apotisor ef the l«^i9ktiori. ntated. "[tjhe I egi station I am inlroductnj; today Is nol intended to have any effecl up^n the preienl novice pFdgrum * * *". Congte$S f final R&:iord-SePfjterS tra?¥k ?4avember3, 1383.
4. We do not propose to specify how the reimbursement fee is to be divided among the VEC a and the VE's. Both the VE'b and VECa may incur expenses^ VEC'b may be reimbursed for expenses that they incur in preparing and processing examinations. This could include Ihe costs of printing, assembling and distributing the exame- In addiliDni a VEC may have other administj'alive costs since the VEC is ri^ sponsible for keeping records on each e^cartiination that Ss given. Postage is another anticipated expense sinte the VEC must forward the applications of auccsasfid appticants to the Commission. There may also be costs for renting the premises where an exam is givenn A VE, on the other hend> may have cost« for transportation to the site of an exam and perhaps lodging expenses. Ai?e, VE's will have poetBge expenses since they must forward the applications of successful applicants to Ehe VEC. VE's may also ha va expenses for paper, pencils and supplies that are furnished to the applicants. We cannot anticipate every expense that a VKC or VE may incur. The statute provides that Expenses may be reimbursed only if they are necessarily and prudently incurred by uncompensated volunteers. Proposed rule 5 97.36 is intended to be flexible. It states thai the VEC arid the VE both may be reimbursed. However, they may determine how much of the reimbursement amount each will receive.
5. Present Si 97.31 and 97.507 which relate to the VE and the VEC, respectively, provide th^t no' compensation from any aoyfce may be accepted. We propose to amend those sections to allow for reimbursement of necessi^ry and prudent expenses.
6. It woutd seem that in most cases the VE could most conveniently collect the reimbursement fee since the VE and the examine*^ directly inieracL Candidates initially submit their applications directly to the VE's. However, in certain oaseSn a VEC may devise a program where the reimbursement i$ collected by it and then shared with the VE's to defray their out-of-pocket expenses. Varying conditions and practical necessities may affect who collects the money initially. Accordinglyn we do propose to allow either the VE or the VEC to collect the fee. In the interest of flexibility, we will leave that to the VECa and the VE's to determine.
7. The amount of reimbursement from each examinee^ which may be less than
the statutory M but may not exceed that amount, will be a reimbursemetit amount that is associati^d with one applic^tJoQ. One application may rfisult in a telegraphy e>cam and one or more written exam elements. All those tests will be covered under one reimbursement amount. However, once the application is acted upon by grant or by dismissal, the reimbursement amount IS final If an examinee fails an examination and later submits a new application, a new reimbursement amount may be collected.
a. As authorized by the legislation, we propose to allow the amount of reimbursement to be adjusted for inflation iivery January 1 as reflected in the Department of Labor Consumer Price Index. The new inaximum would be stated annually in a public rustics.
9. If fees are charged, both the VE and the VEC would be required to maintain records of out- of -pocket expenditures and certify annually to the Commission that all costs for which they obtained reimbursement were necessarily and prudently incurred. We would cancel the agreement that we have with a VEC if the VEC recovered more than out-of- pocket costs. Such cancellation is provided for in § 97.511 of our present rules. Section 97,33 provides that a VE will be subject to appropriate sanctions for recovery of any amount in excess of that permitted.
10. We believe thai reimbursement for expenditures will make the program more attractive to volunteers and more effective. We will continue to administer some examinations in our field offices and at a few remote points In 1984 until such time as the volunteer program js in place. However, our resources for this work are very limited. We wish to implemeni the volunteer examination program as soon as possible for the good of the amateur community. Therefore, the comment period will be 30 days. with reply comments due 15 days thereafter. Requests to extend the time for rtlmg comments or reply comments are discouraged and will not be routinely granted,
11. For purposes of this non-re&tricted notice and comment rule making proceeding, members of the public are advised the ex parte contact are ptsnnilted from the lime the Commission adopts a Notice of Proposed Rule Making until the time a public notice is Issued stating thai a substantive disposition of the matter is to be conatdered at a forthcoming meeting or
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73 Magazine • June, 1984 119
until a FmAl Order dispensing of the matter Is adopted by Ihe Conunission, hhicfaflver it earEier In general, an itx ptirt^ presentafioii is any written or oral communicalion (other than formal wntten cotfimenta/plcftdings and Formal oral ftrgumi^ntf) between a per^nn nutsldf the Commission and a Commiiigioner or a member of the CommiAsiori^ ttdfl which addresses thr menti of lh« proceeding. Any p&toa wh{) submiTi a ivritten ex parte presentation muet *erv« a copy of that presfinlaliDA on the Commmion's Secretary for indu^iDn in the {lublic &le. Any person who makes an oral ex partfi pteftentaiion addressing maltf^rs mi\ fully cQvrrcd in any previausly -filed written comments far the proceeding must pre pure a writ If n summary of the pr^^entmiom oa the duy vi the oral pres^t^ntiition^ thai wnUen summiai^ mtysi be strrvL^d on the Commission's Secretary for incluiiion in the public fiic^ wslh a oapy it> the Commission ofUcial receiving thft oral preaentatjon. E^ch ev parW pru^entaUan mu£[ also 9(at« by docket number the proceeding to which It rfilat&s. Sa:e ganeruUy. Section 1.1 E31 of ihfl Commiffsfon's RuleSf 47 CFR 1.12^1. A tiummary of the Commissjon's pfocfidurcs governing, ex parte contitcta in informal rule makings is available from the Commission's Consumer Assistance Office. FCC Washington. DC
12, Authority for issuance of the Notice b contained in Sections 4{L) and aOQfrl of the Commiifsications Ad of 1934. lu imcnded 47 US.C I54(i} and 303(rV Pursuant lo applicable prfitcedurei set forth m § 1.415. 47 CFR 1-415, of ll)« CommLE«ion's Rides. lnlCTe!Sted persons may lUe c*jinmeTita cm or before Apni 16, 39S4 and reply Cdnunents on or before May 1. 1984, All lelevant and timely comments will be GOOJ ideted by the Comzm^iun before
final aolion is lak^n in thia proceeding. [d reaching its decision, the Commission may take into consideration irLformution and ideas not contained in the comments, provided that such infi.«rmation or a writing in dka ting the nuiure and source ofstjdi information li p Laced in the public &le, and pro vi dad that the Fact of the Commission 'i rehance on such information if noted in the Report and Order.
13, In accordance mlh f 1419 of the Cotunti^ion's Ruks. 47 CFR 1. 4 1 9, formal participanta must file ait original and five copies of their comments and other materiab' Particf pants who with each Commissi oner to have a perfonal copy of their (raiments should File an original and eleven copiea. Members of the general public who wish to eitpresa their interosl by participating informally may do so by submitting one copy. All comments are given the tame consideriition, regardless of the number of copies submitted. Each set of comments must slate on its face the proceeding to which it reUies (PK Docjkel Number} and should be submitted to: The Secretary, Federal CuoimufiicEi lions Commission, Washington, O.C, 20554. All documenli will be availsble for poblic inspection during regular business hours in the Commission's Public Reference Room at iif headquarters in Washington. O^C
14. En accordance with Section Q05 of Ihe R(?guIatory Flexibibty Act of 1000 {S US.C 606), the Commifsici}! certifies that these rules would not< if promulgated, have a significBnl economic Impact on a subslantial number of small entities. becaiiMt these entitiei may not use the Amalenit; Radio Service for commercial radio communication Isee 47 CFR 97.3 [h)) and because these rules would have no Foreseeable impact on manufacturers of Amateur Radio Service equipment
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15
15. The request for agency action filed by the ARRL is granted to the extent that it requests roles to imptement the legii^lation which permit reimbursementi of volunteers who admin is ier or coofdhiate Amateur Radio enaminalioni and is denied insofar as it requesti that such rules be adopted without notice aiid opportumty for public GOirtmenl.
le. it is ordered* That the Secretary sha^l cause a copy of thii Notice to be served upon the Chief Couniel for Advocacy of the Small By^inesi Administration and thai the Secretary shall also cause a copy of thia Notice to be published in the F^^erat RegislSTp
17.. For Infonnation conct;mmg ihij proceeding, contact Maurice J= DePont. Federal Communicatiofi Commisajun. Private Radio Bureau^ Washington. D.C a05&l. (202) 332-4964,
Federal Conununicatinn CkimintBticin.
WmUm |. Tiicvrico,
Secr&iary.
Appendix
PART 97— [AMENDED]
Pari 97 of Chapter t of Title 47 of iho Code of Federal Rcgulalion» b amended^ a$ fQllows:
1, Section 97.3lLc} is revised to read. BS follows:
4 97.31 Voliitrrte^ eKamhier requfrefrrcriliL
(cj Volunteer examiners may not be compen&aled for services. They may be reimbursed for out^f-pocket expenjies. ei(cept for Novice class ex-aminanons Jsee I 97.36}
* * m m *
2. Sectioit 97.33 is revised lo read, at follows:
|»7^3 Voaufite«r«x»niii«f conduct.
No volunteer examiner shall give or certify any exaoMnaLion by fraudulent means or for monetary or other consideration. Violation of this provision may result in the revocation of the fimaleur radio station license and the suspension of the amateur radio operator license of the volunteer examiner. This does not preclude a volunteer examiner from accepting
reimbursement for oul'Of- pocket expenses under | 97-36, Recovery of any amount in excess of that permitted may result in the sanctioni speciHed hereirz.
3- New section 97.36 is added, a 9 follows:
S 97,36 RcarttHifieinant for *A{»fi4«,
(a| Each volunteer-examiner coordinator and each volunteer examiner may be reimbursed by examinees for out-orpocket expenses IncitiTed in preparih^ processing or admimsteritig examinations for amateur station opierator licensei above the Novice Class, The volunteer-examiner coordinator or the volunteer examiner must collect the reimbursement, if any, from ihe examinees. No reimbutscmenit may be accepted fur prepanng, processing or adminislering Novice class examinaliona.
[b] The maximum amount of reimburse men I is £4 DO and will be adjusted annually tach jiinuafy 1 for changes in the DepiirlmiCint of Labor Consumer Price Index and announced by the Commission in a Public Notice. The amount of such reimbursement from ary examinee for any examinotton or series of examinations related lo a single application must not exceed the published maxim um^
fc] A volunleer-examint^r coordinator or volunteer examiner who accepts reimbur^emenl must maintain records of the out-of-pockei expenses and reimbursements and musl certify annually to the Commission's office in Cettysbiirg. PA 17325 thai all expenses for which reimbursement was obtained were necessarily and prudently incurred.
4. Section 97.5(Fte) Is revised to read
as follows:
}97.M»7 VEC qualttiutions.
(e) Agree not to accept any compensation from any source for ill services as a VEC. except reimbursement for out-of-pockel expenses permitted by | §7h30; and
MM HELP
Can anyone please advise n>e who would have service data on file of for sale on the sets macte for the US Go^fimmsiYt for WWil— Aniiy SiQoaJ Ckirpa and US Navy.
F. Kfant2
100 Osage Ave. fiORMirdale NJ OdOas
111 omtJcrU^
Swan 350.
Model 14-x dc module foe
Kurt n. Frttsch WAaTOV
7e&2-1D3 Amaricani Circle
Glen Bumje MD 2iOei
(301^766-7003
Need lots of help on how to FM the re- ceive on the Drake TR-3 or TR-4, Informa- tion and schennatJos, If poaalble.
Bob King WDBPLH
7000 Blackahtar Orivt
Huber Heights OH 464^
1 am looking fof Infonnation on {and to buyl a National NCU^ l004(Hs call- bratof.
JoMph Karr KASRKD RZBo«S»1
Ulwwtiw Afl 72S42
I need information ofl i VIP switch for an loom £28.
David £. Ouigitana K2liTW
1 15 to* Roblas Stmat
Wllllamsviile NY 14221
i need thd owrwf'a and^or servtce m.anua1 for the Gladding 25 2^met«r FM trans^ivw^ 1 will buy or pay any ex-
John K. Cox KAIZIi
161 S Wood Avenue a«irlir>g1on NC 2721S
Wanted: Someone knowledgeable (and with the necessary lost equipment) who Oas bijlli tha aatoiHte recslvof, 'Tite Receiver IV," featured in ^5 during March through June, 1982- I need my receiver aligned and evaluated ind lack the proper test equlpmont and antenna to do tha Job. I would be willing lo pay UPS charoee both ways, but due to being tola Fly disabled and on a fixod income, I cannot afford a lot In the way of other charged.
Thanks a lot.
Jotin W. McCuife K7ZVP
PO Sox 577
Shorn Low AZeSSOt
ISO 73 Magazine « June, 1984
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73 Magazine • June, 1964 121
international)
from pagB 7^
OSO, and \ give Gerald 5/1 and he gave me S/2. Gerald told me thai Ke was using a simple V^MvavQ antenna jusl above ttia roof. Latat on, I shut down tto $eat4on and want to t>ed. I toolt two i ablets of p^inkiil^r 10 relieve my headaeha.
I was supposed to call my frle«Ki ^n Kola KinaJMlu, eMSMH, ai about 1930 local time, but by than 1 was faflfiH} too cold to be active agaJa Tltarft waa no light in tlw shetiaf. W« started a fire in tha fireplace. tKit it died very fast becausa thora was not «naugh wood. I ffnally aiapi at about 2CPD0. I was told that tt>a tetriperature at Panar Uban waa aboui S" C and it was a boy I 2^ C at the peaiiu
AI abovi 0100 the next day. avwybody woke up and had some canned inatafit noodles and waim coffee We started to climb to \nt p^ak^ 2300 feet tiigt^ef at 13,456 feet. It had be«n raining during t^» night. Si rice il waa aiili darK, f used a tcrch llghl att the way.
We made anoltw stopover at Panar Lat>an befora going down to ttie National Park, and I tiad another QSO ttiat morning from Panar taban.
THE NETHERLANDS
H. J- Q. Meermsn, Jr. P£m}DV Zendvoonerweg 33 2111 QRA^rdenhout The Netherisnds
THE DUTCH PREFIX
fn an earlier articte, I told you about ttie different licenses ir^ Hofland: the A II- cense for all bands and all rrKxles, tha B II* cense for CW on some HF bands and all modes on 28 MH2 and hifihttr, Ifie C II* cense for all modes an 144 MHz ami hlgn- er. arHd the 0 license *or FM on two meters.
You ean recognliJB m atotkon's t^cense clft^s by Hs prefix iw'Wb seme except tons). In general, license class and prefiit are as f of tows: A— PA§. PAZ PA3; B— PB*; C— PA*, pee, PE1; D— POU- Club stations - PI4; Repeaters— PI3.
On ttti kvay to P^rtar Loimn. Lstt to right ismaii, mysBit, Ahatiiah, Teddy, and Syfv&stBr.
PI4NLB
This callatgn Is from ttie VERON club station In the region NorthLimburg. H Is on the air evsTy Sunday mom in g from 1 100 till 12D0 arc on 1 45.350, on FM, wltli rtgtonat news items, in the future, they will add some more frequencies.
THE DUTCH QSL BUREAU
ttwaddrees of the Dutct) OSL service ia PO Box 330, 6600 AR Arnhem, Hie Nether- larkds. This Dutch DSL Bufieau {DOB) 9ends att QSL cards from the memt>ers of the VERON arid VRZA {the major societies In HoUand) to every comef of the world. They collect the OSI3 wh^ch are ^received at PO Box 330 and spread tri^in among their members again This gigantic ser- vice Is free for hams ancf SWLs who are tnambers of ttve eariief -named clubs. AH ttie work it dOfie by volunteers and tfi^ir families In (heir spafe tima
This year the DOB hartdlad 1J5 million cards! I thlnle tl^t is a magic numb«ri
THE HISTORY OF OM H. J. JESSE
The lUilw JMte may say nottiing to you, but let me tett you the story of this re- markat>le Dutchman. We go t3«^ to the year 1923, on Itw winler night of Decerrv ber 26 Mr. Jesse was the man wtio made the first contact with the States. He used then the call PC1t
A E most every pari of his trartsmitter was homemade, because at thai time shops where you could go for radio parts were r>ot at hand. To isssmbie a radio transmit^ tsf, high technical krrowledge was re- quired.
Back In the 1 wen ties, radio amateurs like Mr, Jesse had no stetus. I^e couldn't get a licence, and therefore his technical achjevemems were illegal. After his ex- periments, he was prosecuted by the authorities, and when hta matter came to court, everyone was so thrilled by his achievements that, although they found him guilty^ they did not lay any charges on himl
Lest year in December, it had beeri sixty years since this pioneer had hie contact with the Stales. For this occasion, Mr, Jesse was granted a fuii llcenaej his call- sign la now PA0C11.
I— and many hams with me— hope that Mr. Jesee makes use of this license, be- cause who wouidn^i like to h^ve a QSO with such e rsmarkabte man?
^^ «fl
At tff Ptn»r tsMn tfi§it§r> about 17Q0 focai time, with the Siim Jim at my right.
122 73 Magazine • June, 1984
NEW ZEALAND
D- / Ctiaprntfi Zl^Vf^ 459 Kmfi§dy BOBd Napim NwmZ—lar^d
U«t rr>or^th I f initlwd the section of the column 0f> iVitlOnai Field Day activities in ZL with • mention of the usual weather condttions expected ai that time of the year (February). How wrong I waat
National Field Day dawned to steady rain that had be«n falling from the early houfS of Satufdfty morning. The sarrw w«atfwrwis prtdominant tlwouclioul the wttols country- The rain continued for •tout 12 houra. eaaing ^uat before the OOftlMt b«(|a/i it 1S00 houra ZL time. So. U you can imagine, tfwre were many very wet and miserable FD operators tn action this ywir. A typical FD sltuslion was as foliowt:
Arrive it the site s^ut 10 am ZL time In fairly heavy and steady rain, to commence
setting up the station. The first fobs are to set up the station^s shelter and locale the portable generator. No doubt afi outdoor types have attempted to put up tents in the wet; quite a formidat>ie taak. especial- ly as the wind had just begun to get up a bit However^ after much difficulty, the shelter is erected and the two tents )olned together with an access passage in case the raln«>r\tlnues all through the FD oper- ating period. Meanwhile, a second team has set up the motor generator a reason- able distance from the station tents^ placed a canvas shelter over the outfit to keep the rain off the motor and gerrerator, ar>d made several attempts to gel the rrho- tor running.
Eventually ttie motor-generator Is rurv up and tested, much to the relief of the FD Control ler. then shut down until tatef when ttie contest is atKXJt due to start it is still ramlr^, and now the wind has In- craesed conaielerabty. It w^utd be like this, ror now It is time to Iry to gtt ttit an- tennas up in the trees. WTiiie ti^ oth«r work had been progressing, a small ream had been working to get the lines into tf^ trees for ttie antenna supports These vary from site to atte, but everyor^ tries tor the higtiest arid besHocated at their site.
rmaglr>e trying to get lines up into large trees in these coi>ditione. Yes, you have guessed — very frustfating. and there were many, many unprintable words spoken be- fOfe the job was finished. There are many differeni methods used r^re^ throw tng piM lines with a casting rod, using a kite ar>d flying the tines into place, using a crosstKtw. and having a volunteer "idiot** climb the tree with the lines, Nevertht^ less, whatever method was used, all sta- tions completed their antenrta erections in atrocious conditions, with craditahle results.
At one station I have heard of. the wind was blowing so strongFy that branches from the TOO foot poplars were breaking off and adding to the hazards of the wind and rain, in fact, so I'm told, one fairly hefty branch hit the FD Controller's car parked nearby and caused panel-shop repairs amounting to over $300; can you Imagine what his XYL said when he got ho ma from Field Day? Just as well the brench didn't hit any of the FD team or there would have b^en graver problems than one damaged car.
Once the antennas were weli on the way to being erected, then a smaii teem began organizing the station setups for the SO- and 4O-met0r opereting positiontf one in each tent. When all the cabling and antenna connections were nearty com- pleted, the generator was again fired up, the voltage adjusted to the load, and some test calls put out to other FD sta- tions in a simliarty wet state to ourt.
After all seems well, the FD Coni roller allows the crew to have lunch and to try lo dry off a bit. The wise ones in the team have brought a ehsn{^ of clothes and towels to dry off with. And while the FD team Is having Its first break since 10 am, the weatr^er begins to ciaai. By the lima the first ^X^ calls ware put out. at 1500 hours, the rain had stopped and the wind decreased a bit to rnake conditions a iJitia b4t moia piaatifit than thay wata a faw hours earlier.
For the racdrid, this year's ZL National Field Day attracted about 50 of the 79 eli- gible Branches into the field, with some of the larger Branctvea putting In more than one team. The numtiar of BrandiM oper- ating this year was less f han last year, but then, 1963 was WCY yaar, and no doubt there was a bit of an m%Xt% effort arid am* phaais placed on last year's avani for that raaaofL Nevertheless, tt was still ■ good tumoutt con8Jderir>g the atrocious condh
Selling 73 will make money for you. Consider the facts: Fact 1: Selling 73 increases store traffic— our dealers tell us that 73 is one of the hottest- selling amateur radio magazines on the newsstands. Fact 2: There is a direct correlation between store traffic and sales— increase the number of people coming through your door and you'll Increase sales.
Fact 3: Fact 1 + Fact 2 = INCREASED $ALE$, which means more money for you. And that's a fact. For information on selling 73, call 800-343-0728 (in New Hampshire call 1-924-9471) and speak with Ginnie Boudrieau, our bulk sales manager. Or write to her at 73, 80 Pine St., Peterborough, NH 03458.
73.
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73 Magazine • June, 1984 123
tlofis during the setting-up perio<S. As far as I can ascertain, only one tearr aban- doned efforts b^cau^e of the weather con- dUEona, and this wa$ a two-man team, so it waa not too aurprising.
1984 saw the first time that a full YL team operated. The "girls" ware based at inglewood in. a mobile motor caravan, but evan so had to contend with the wind and ra]n when putting up their antennas, etc. Another FD group with a difference was the station set up In a focai school ground by an Aucl^land Branch as an amateur- radio PR exercise. Ttva tents were erected In the middle of the school sports field, and there was suitable put}licity In the local papers to encourage interested locals to visit and find out a little of what amateur radio Is all about. ! haven't heard how the response was, but while weather conditions on the Saturday were not good for the PR exa raise, Su ruby's weather was much imprcved.
There are always many hard lucK stories from Field Day and no doubt many of these wItt continue to come out over the next few months, but the one I heard about was a real honey. The FD Controller had been chastising his team, urging them to try harder and make more con- tacts, etc., when it was time to check the motor generator for gas, etc. By now dark- ness had set In, so the Job had to be done with a flashlight (very difficult holding a flashlight and filling the gas tank simulta- neously) or by plugging In the service lamp. Well, the FD "boss" decided to plug In the senrlce lamp. It had not been checked, and yes, you guessed right f it had a fault caused by the wet conditions; when plugged In, It upset the generator and put the station off the air. Mad panic! Get the standby generator! Attempts to start the standby failed t Then somebody dsoided to check the standby generator for gas. The tank was empty!
You can Imagine the red face of the FD Cent roller. ..he has never lived that epi- sode down and won't be allowed to forget tt for many years to come. The "off-air" parlod was about 15 minutes at a prime time, so It was a bit embarrassing to the "boss man." Eventually, the main gener- ator was restarted and the standby motor generator not required, but It was ieft gassed up just in case.
Front contenders for the FD contaat honors will come from the following Branch teams: Manukau Branch ZtlQB, near Auckland; Auckland VHF Group 2L1BQ; Napier Branch ZL2ABJ; Auckland Branch ZLIAA; and Franklin Branch ZL1GA, near Pukekohe, south of Auck- land.
BITS W PIECES
I am Including with this column a chart showing theZL band plans, which should t>e of interest to amateurs worldwide. Our regufatory body, the NZ Post Office, In 1SS3 delegated the fesponslbiiity for plan- ning within the amateur bands to NZART and amateurs thsmselves, and NZART ac- cepted the task. The band plans are devel- 0|Md by the Frequency Management Working Group (FMWG) of NZART, based on lARU recommendations and local ra- qulrements, and all ZL amateurs are re- quired to observe the published band plans "to assist others to follow their in- terests with a minimum impact on ama- teurs, and to assist amateurs to follow their Interests with a minimum of impact on others."
in Just over a year from now, ZL ama- teurs will host tho lARU Region III As- aoclation Conference in Auckland from Novemtier 13-18, 19B5, during lARU's Dia-
NEW ZEALAND BAND PLANS
These plans help you comply with the official Frequency Allocation List: 'The class of emission from an amateur station shall be selected In the Eight of the total available bandwidth for all users and shall be in accordance with current operating practice/' These plans represent current operating practice. See C&ffbook for designated frequen- cies and detailed band plans.
All amateurs are reminded o1 (1J The ITU Radio Regulations (Edition of t982), In- cluding: 307. The band widths of emission shall also be such as to erisure the most effi- cient utilization of the spectrum; in general this requires that band widths be kept at the lowest value which the state of the technique and the nature of the service permit 1804. All stations shall radiate only as much power as Is necessary to ensure a satisfactory service.
(2) The New Zealand Radio Regulations 1970, Including: 40, (Not to causa harmful In- terference to other stations). 45. (No monopoly of allocated frequencies). 147. (Permitted power limit)-
(3J NZART Current Policy. Section 12A, Band Plans, {Break-tn, page 2, October, 1983): d. All radio amateurs are requested to observe the published New Zealand band plans which are to assist others to foliow their interests with minimum impact on you, and to assist you to follow your interests with minimum impact on others.
N = Narrow-band modes: i.e., CW and HTTY. HTTY operating Is normally at the high-frequency end of the segment. Gsiltook- llsted seical (RTTY selective calling) frequencies should be avoided by stations using other modes. SSB phone may be used for Morse practice lexta by stations in 3.53-3.55-fylHz segment.
B^ All modes except MCW and AFSK, to a maximum bandwidth of 6 kHz.
10= All modes except MCW and AFSK to a maximum bandwidth of lO IfHi
30= All modes to a maximum bandwidth of 30 kHi.
7= All modes to a maximum bandwidth of 7 MHz.
W = Wideband modes.
B = Beacons: Transmitting on Ca//* boo^-listed beacon frequencies Shouid be avoided.
R = Repeaters: Transmitting on Cafl- boo^-llsted repeater frequencies should be avoided for direct contacts in their service areas.
S = Satel I lies i n c u rrent use: Terrestria! contacts are not recommended in the segments £9.3^29.5. U5.a"l46 a, 435-438, 1260-1270 MHz and on higher satellite-used frequencies.
T= Telecontrol and telemetry only.
Emission |
|
Band (MHz) |
(See notes) |
1.S-1.95 |
6 |
3.5-3.55 |
N |
3.55-3.9 |
6 |
7,0-7.03 |
N |
7,03-7.3 |
6 |
10.1 -10J |
M |
14,0-14.1 |
N |
14.1-14.35 |
6 |
1S.06Q-ie.ri* |
N |
10,11-1©.168* |
g |
21.0-21.1 |
N |
21.1-21.45 |
6 |
24.39-24.93* |
K |
24.&3-24.99* |
6 |
27.12 ±0.163 |
T |
28.0-2B.1 |
N |
28.1-295 |
63,S |
29.5-2S.7 |
10 |
50.0-50.1 S |
e |
Amateur bands |
|
51 to 440 MHz |
30,8,R.S |
Amateur bands |
|
440 MHz to 13 GHz |
7,B,R,S |
All amateur bands |
|
above 2,3 GHz |
W3,R,S |
When available.
mond Jubilee year. This will be the first time New Zealand has organized an Inter- national conference, and a fitting preiude to the NZART 60th Jubilee to be celebrat- ed in 1986.
Silent keys of recent weeks Include Bob Robertson ZL4AC, originally 4AC of Dunedin, a 60-/ear operator, who passed away on Christmas Eve, 1983. Also, Glem Smith ZI^DM of Gisborne, and Johnny Palmer ZLIKV of m. Albert, Auckland
from feft to right, Jsmes O'DonnsU KB4HMO/HP7XJL, Robeft tmerick W4YTM/HPiKR0. Dr. Ernst Kredel WA7ARU/HP1XEK, Ms. Nors Cabatt&ro, h&r father, Anhal Aivsrado, and Sot Rodg^rs HPlXRQ,
PANAMA
Rob&rt H. EmGffak W4YTM/HP1XRO President, Canai Zone
Amateur Batito Association PSC Box 2029 APO Miami FL 34002
ft had been 15 years since Ms, Gabai- lero» a resident of Marshailtown, Iowa, had left the Republic of Panama as a young child. In the interim, she had lost contact wtth her father, stlJI in Panama. Hsf ardent desire to re-establish contact with her father and to rediscover her Pana- manian roots Inspired Marshall town, Iowa, amateur-radio operator Fred Meyer N0CFJ to try to help her.
One of the calls he made |ust happened to t>e picked up by Jamas "Red" O'Don- nell HP1XJL, Panama Canal Commission supervisory power dispatcher^ tn the home ot Occupational Health Division Chief, Dr, Ernst Kredel HP1XEK. Ulte Fred Meyer ► Jinn O' Don nell could not help but gel into the act.
Armed wJth only a name and the infor- mation that Ms, Cabaliero's father had tieen both a barber and a firefighter, Jim visited Panama's Balboa Fire Station to ask the firemen (bomberos) there if they knew of such a nian. By chance, one had heard of a Sergeant Aivarado who worhted at Panama's international airport. Jim was then able to locate Mr. Aivarado and establish that he was Ms, Cabaiiero's father.
A phone patch was arranged through HP1XEK to a I tow father and daughter to speal^, although the conversation was somewhat Impeded by the fact that he spoke no English and she no Spanish. The hams were thrown into the conversation as translators.
Before long. Mr, Meyer and the fire de- partment in Iowa were raising money to send Ms. CabaEFero to Panama, In Pana- ma, a number of firefighters and ham op- erators were making arrangements for Ms. Catjallero s arrive L These Inctuded Commission civil engineer Tomas Duque, treaty affairs specialist Robert Emerick HP1XR0, Graphic Branch equipment spe- cialist Bob Rodgers HPlXfiQ, Commis- sion Fire Chief J aye DIetz, and Republic ot Panama tiombero Capt. Christian Amhelt- er. Overwhelmed by all their assistance, Ms. Caballero said, "This is simply fantas- tic. I had no idea so many people cared!"
Ms. Oaba Hero's 10-day visit was charac- terized by a whirlwind of activities. She met with representatives from, and visited points of Interest In, both Panama and the Canal area, including the MIraflores Locks and other Commission facilities. But the highlight of the tfip was, of course, getting reacqualnted with her father. Once agatn^ ham radio brought
124 TSMagazfne • June, 1904
RAMSEY ELECTRONICS
-^62 Inc.
PARTS WAREHOUSE
We now have available a bLinch of goodies too good to bypass Items are hmited so order today
2575 Baird Rd. Penfield, NY 14526
716-586-3950
MINI KITS - YOU HAVE SEEN THESE BEFORE NOW
HERE ARE OLD FAVORITE AND NEW ONES TOO.
GREAT FOR THAT AFTERNOON HOBBY.
iMfiKRUfl
Call your Phone Order in Today. TERMS:
SatJ^ifoctian guaranloed oi rnaney Telunded. C.O.D. add $2.50. Minimum order $6.00. Orders ij rider $10,00 add $1,50. Add 6% tor posiage, infiuraric«, handling. Overseas add
15%. N.y. residents add 7% tax.
FM
MINI
MIKE
A super tiigh performance FM wire^ less mike kit* Transmits, a slable signal up lo 300 yards wilh excep- lional ajdJo quali-ty by means o* tit ttuill in eteetret jnike. Kit includes case, mi he pn -oft ^wiTcIt'. antenna, tjattery and super instructions Ttits IS the tmesT Lumt available
FM-3KU $14.95
FM-3 Wired and Te$(ed 29.95
FM Wlr«l«A« MIhe KE1
Transnnits up to 300' to
any FM broadcast ra-
dfO. U^es ^ny type o'
mike. Runs on 3 to 9V
has added sensitive nrtike prearop
staqe
Cotor Organ
See music come alive' 3 ditfereri:! lights fhcker with muS^c One liQht each tor high, mid-range and lows Each indi- vaduaffy adjust- able and drives up to 300 W runs on 110 VAC
Complete kit, ML-1 $8,95
Vfd«o Modulilor Kit
Converts any TV to video moihiHar Sup*r stable Tunable over ct^ 4-6 Rufus on 5- tSV acc-&ptsstd video Sfignai Seslumton lh9- marJtaE! Compl&te krl. VO^i tT.95
Led BUnky KH
.A great attention get- ter which alternately flashes 2 jumbo LEDs. Use for name badges, buttons, warning panel Sights. arKylhing' Runs on 3 to 15 volts Corriplete kit. BL-1 $2.95
Super Steiflh
A $uper sen $ p I i v e a rn pi i - fier which will pick up a pin drop at 15 feet' Great for monironng baby's room or as general pur- pose amphder Full 2 W rms Output, runs On 6 to 15 vol Is. uses S-45 ohrn speaker i:>3mp1e!e ktX, BN-9
S5,9S
RurhS on 3-i2 Vdc 1 waif Al3^ir. Audio OsciiialQ^
oul 1 KHZ qood tor CPO. Compfete kit $3.95
Type FM-2
FM-1 kit I3.9S
FM-2 ktt $4.95
Univertal Timer Kft
Provides the tsastc parts and PC board required to_^ provide a source of precisron timmcp ar^d pulse generatiar* U-ses 555 tiitier IC and includes a ranqe of parts for mosl timing needs
UT^S K-JI $5,95
Whisper Ltghl KH
An interesling kit, small mike picks up sounds and converts them lo light The louder rhe sound, the brighter the Irght Includes mike. controls up to 300 W. runs on 110 VAC. complete kil, WL-1 $fi.9S
Mad Blaster Kit
Produces LOUD ear shattering and alientign gethng siran like sound Can Supply op to tS* watts^. <j! obnoxious audio Puns on 6-15 VDC
Tone Decoder
A complete ton-e deco- der on a Single PC board Features 400- 5000 H^ adfusiabfe range via 20 turn pot. vottage regu- lation. 567 iC Useful 'or louCh- tone burst detectfon FSK. ptc Can also be used as a stable tone encoder Runs on 5 to t? voMs Complete hit TD-l t5,9S
CLOCK KITS
your o3d favorHet dre here agA^n. Over 7,000 Sold to Date. Be one of Ihe gang and order youri. lodayf
Try your hand Sit building the finest looking clock on the market. Its satin finish anodized aluminum case looks gre^t anywhere, while sjj< .4" LED digits provide a highfy readabte display Tfiis is a complete kit. no extras needed, and it only takes 1-2 hours to assemble Your cfioice of case colors; silver, gofd, black (specify).
Clock kir. 12/Z4 hour. DC-5 S24,9S
Clock with 10 min ID timer 12/24 hour. QC- 10 $29.95
For wired and tested clocks add $10.00 to kit price
SPECJFY 12 OR 24 HOUR FORMAT
SATELLITE TV KIT
Sirvn Kit Produces upward and downward warl characferisiic of a police siren. 5 W peakaodto output, runs on 3-15 voHs. uses 3-45 ohn^ speaker. Complete kit. SM-3 $2.*S
WB-I Ki(
$4.95
£0 Hi time Base
Runrofl S- 1^ VCC Hi-* currp*!! f£"5rna j 1 mfp mo!T|;h: accuracv Tfi-?' kij !$,$4
THE POPULAR &ATTEC RECEIVER IN KIT F
\v\iy (unable agdia ict fB€OV&
divide by two PLLdemodu-
catiold perFofmance, lighl
tfi asuQ're dr<fs Una reception, Brun
I'^i channel lunabJe ccv^r-age.
'jiiitB T-'i^ ay*i;#m arflufld t^ei B2B,
Hsusanciatihera alreacly h$v4 una now
illabJS In Hit tOfm at a nqw law pncs Orde>
NEW, LGWER PRICES!
F'aatijred in a. Radi'^^iLl'^i story iMe^ a\
PARTS PARADE
plated SSSUrr
For the
JtTn-e cover jill^C TV ,^ [.^^-^'dndg o! roca- build; pr&elcFiKj, J component layout ^nt i]idcann«rit .and' lf\it and local o-sciFlstQr ar# piE- 'jnedi All pans are ific^uded agHive ci&6. powaf %upp1y, descriptive opecaiirig rnanual as w^N a$ ^gm- plete ss-g^mttly m$! ruction*. Featur-as of the f&- cerv&t inciude, dual converaion desian fo-r best
A complete Sa!E! I UiE TVSy.s(flm requires A dasFi gnlenna., LNA llOw norse flmpli- fierj, flecaivfif and ModuJaSor. R2 B R&Ceiver Kit tMS.M
R2B Receiver, Wip'sd and Tested S»fl6,W]
RM3 F^F F^odu later ^49.96
Prige^ include {fomesttc UPS shipping and insursJi-ce
IC SPECIALS
LINEAR
301
380 SS5
5S6 &65
ses
5fi7 741 l4Se
a03S-
*►
*1.5C E .4«
St W
SI. 00 S1.00 $1 2S
t .50 t .50
S29$
TTL
CMOS
40tt 40131 404S
4Q49
4511 451^ 563*
.50 .50
S1.85 .50
$9.00 $2.00 S1.35 31,75
74S00
7447
7475
74B0
7^t96
S .40 $ 6S S .SD $ SO
SI 35
SPECIAL
tiC90
tons
7200' 7Z07A
72160 7^07C 5314 5375 A8/< 7001
SI 5,00 $ 1.25
£17,50 S 5.50 121.00 $12.50 $ 2.95 I 2.95 $ 6.50
Asaortment of Popular values ■ watt. Cul laad for PC mpunting. center ''^" iea<Js bag of 300 more
$1
Of
5D
S wl'tc N^£
M.ni toggte SPDT Si. 00
Red Pushbuttons N O 3/S1.00
Earphones 3" Feads. B or^.m good For arnall [of>e speS*<er5. fllprm dockg. gtfi
5 for SI, 00
FERRITE BEADS
WiiFi i'-<*o and SflfK:!" IS.'SI 00 B M^le Bs\\if\ Bead 3 &; 11.00
READOUTS
PN0J6g4"CC 11.00
FNDSOT.'SlD 5' C A 1.M
MAN TP/HP7730 Xy C * t.M
NP vesf 43" C A a. DO
TRANSISTORS
2N390J NPN C'f ti.'tlOO
?IN3We |)NP C^ F \S.ftl .«
JKm03 PN-P C ^ F 1 !/| 1 .00
SPWJiaNP^JCHF 15/1100
iNUtit PhPC^F i/n.»
?NeQ?BG*F A/fi.O^
?N377i NPN Silicon fE.SO
2NS179 UHF NP*t 5/II.0O
Pfiw^r Tft HPN 40W 3/%\.tltt
pD**f Tib PNP 40 W 3^1.90
WPF 102.''2N54»4 t.Sl»
N43N 3^^ typf T*n M/fa.so
pnP )He T^pfl T^ft H^|2.»
2N305S tji«
Sockets
fl Fin 10/S2.O0
14 Ppn 10/S2.00
16 Pm 10v*2.00
24 Pin 4/$2.M
2B Pin 4/ $2. 00
40 Pin 3/$2.00
Mini 0 Ohm Sp«*kvr
Approx ?'..i' dism Rour^d type tor radios. mKe ■&!£: 3 for S2.00
Cfystait
3 579545 MHZ Si 50
lOOOOOG MHZ SS.OO
S 24Sa00 MHZ S5.00
*C Aclspter*
G-oofl for rlotJts nics<j chflrgpTS^all 110VACplH9 O'ne end
8 .5. (/dc (a ^a mA si .co
16 yac !^ 160mA i2,S0
^^ vac >a 250rr>A 13,00
Solid Stilt Buifere
small buzzer 450 Mz. 66 dB sound oulpNt on 5-12 "i^dc at 10-30 rnA TTL CQrtif^atit^ie t1.$C
Audio Prescaler
Make high resolution <9U£lso n>easufments, great for musrcaf Fnstrument tuning. PL Torres, etc MuHiplies audio UP m Irequerrcy, selectable xlO or xlOO, gives Oi HZ resolution wfth 1 sec gafe tiiTie' High sensitivily of 25 mv. 1 meg input j and built-in tHtering gives greai performance Runs on 9V battery, all CMOS PS-2 k(t $39.95
PS-2 wjf ed $ 49.gs
600 MHz PRESCALER
Extend the range of your counter lo 600 MHz Works
With all counters. Less than 150 mv sersitfvity. specify - 10 or -TOO
Wired, tested, PS-iB S59.9S Kit PS'ia $44.95
&l4ig Tuned Coils
Small 3.'"16" Hei< Slugs turned coil 3 turns. 10 for Si. 00
AC Outlet
Panel Mount with Leads 4/Sl,00
CAPACfTORS TANTALUM
1.5uF25V3^S1.00 1.8 uF 25V 3^S 1.00 .52uF25V3/$1,00
ALUMINUM
ElECfrtiis^t-.C
looo uF i6V Hao^ai t.ia
500 uF 20V Ai^al I.SQ 15& uF 1§V Ai^al S.''lt.00 lip uP 15V 1^ ad 1*1 tO'tl.W
DISK C£RAHEC
01 iGV dii* 3'QySl.0& 1 T6V tS/*1.M
DOl 16V 20.--51.M
tCKpF ' 20..'S1 M
fHl? IGV JOj'tl.oa
30 Watt 2 mlr PWR AMP
Simple CJassCpowei' amp features 8 times power gain 1 Win for8out. 2Winfor 15out.4Winfor30out Maxoutputof 35 W. incredible value, compfete with aH parts, less case and T-R relay. PA'1. 30 W pwr amp kft $ 24.9s
TR-1. RF sensed T-R relay kit 6.9S
DC-DC C[3nvert«r
'S vac inpul prcwa -9 vdc fcEi iiOma ■9 vdc produces -15 vdcto! Jama H.25
Diodet 5 1 V Zener 20/! TOO 1N9l4Type SO/SIOO 1KV2Amp B/|1,00
100V lArrip 15/*t.0O
25K 30 Turr^ Tfim Pol $1.00 IK m Turn Trim Pot S .50
Ceramic IF F''^'*;t*'
Min -^1 qOU^ 'kHz
IE
Spraoue - 3-^D pF .50 *1.
MRF'33,0 trgnsislor a& used in PA-I e-10db qain 150 mhz S11-9S
RF actuated relay senses RF
(1W) and closes DPDT relay
For RF sensed T-R relay TR-1 Kit $6.95
Power Supply Kl^t
Complete iriple regulati^d power EUppJy provides varrable 6 to tS volts al 200 ma and -5at 1 Amp Exceilen) load regutatron good filtering and small s j ze L ess t ra ns f ornriie rs . req u ^es 6 . 3 V •s1 A and 24 VCT Compleie krt. PS-3LT S6.95
Crytlal Microptiofie
Small I" dtameter '■/' FhicK crystal mike cartridge 4.75
25 AMP
IDGV Bridge
$1.50 each
Mini-Bridge 50V
1 AMP
2 for $1.00
Co4x Connector
Chassis mount
BNC type $1.00
Mini RG-174 Coax 10 ft. for (1,50
OP-AMP Spvcivi BI-FETLF 13741 - Direct prn for pin 7^11 c^^ Q'
,N)1
[r\pu\ z. super low 5-0 pa mpul cur'^vjOl power dram
but 500. 000 MEG
SO for only $9.00
10 t<tr
fa.W)
f V&n Billsry Cllpt Mic« qualily clif(£ S for 11.00
\- Rutsfeer Crorrnmets 10 tor H.OO
Ai^l oi choho ^$\si. cafth r«nr r^vtto^^
t^sr-iiH^if^. dindle; M'CA CApi tic
in} tug C^OO pc) fl.OO \j} big (300 pcj 13.90
6 pm type go^d contact's 'or m A- 1003 C9^ clocts mondulie price 7^ •■.
Ledi - y<3ur choice. pEease specify
Mini Red Jumbo Red, Htgh Intensity Red. Illuniinator Retf S/Sl
Mmi Yellow. Jumbo Yellow. Jujnbo Green i/t1
Var*ctairt Mott^rola MV 2209 30 PF Nomir^al tsp 20-80 f*F - Tunable rarvg*
78MG 79MG
309K
7805
$1.25
(1.2$
1.50
41.15
Sl.OO
Regulftton
7fll2
7815 7905 7912 791 S
$1.00
tioo
$1.35 $1.25 $1,25
Shrink TublfiQ Nub*
Nic^ precut pees pf stirink si/p V * >*" shrink tiy 'V Gre&i iO' splices so/tt.WJ
Mini 10-92 Heal Sinks The* ma Hoy Bra net S Jiw tl.OO
To-2?Ci Heal Sinks 3 fer 11.00
Opto Isolators - 4N2e type
Opto Reflectors - Photo diode + LED
$.50 em, $1.00 •«.
Moi«x IHnc
Mol«i aJrOftdy priKut m length o( 7 Peft*Cl lor M pip sockets JO itr^p* for II ,00
CDS PtiDloctflt Resistance vartea *itn light 250 onrTis w over 3 rneg 3 tat $1.0fl
See L^s/ cj/ Advef timers on page T14
73 Magazine * June, 1984 125
soma happiness \o paople at different lo> oaijona in the world
PORTUGAL
Lutx Miguei d^ Sousa CT4UE
PQ Bo^ 32
5. Joao do Eaiofii
27SS PorttiQal
Lat rrwr Introduce you lo two vwf Irv ter^BSIIng Portuguese awards . sponsored by REP:
(1) DMP-WPW^WQrk00 Portuguese Woffd. OSO Of SWL ten dltt^rent stations In ten Portusue^e po34«S4ions, usiOQ any mode or band after July 29. 1947. Covrv tri^ are: PortUQaJ, Azores tsiarkds, Ma- deira islarti. e^ie-Poriugueae India (not re- quiredjp Cape Vert tsiarid,* St, Tome ^fKJ Principe Wand*,* AnQOt*,* M02amtnquft,* Portu0ua$a Timor/ and Macau. (An asiaJT' tsfc meand; ooniatt^ made <im\r\Q the Poc- lugue^e administration of Ihat country.J
(2) DPCi^Wotked POffy0wafl« Pwv~ Incm. QSO ot SWVL SO dlf<tfl«nE CT sla- ttofia» with 26 co*nt«€tS in dlflerent prcw- incss and islands, uSlAQ &ny mode <n band after January, 195Z Mtnlimum OSOa with each province: Trai os Montes e AKo Douro— 1, Minho— 1, Ooyro Utoral— 5^ Beira Utora!— 1, Beira Balxa— 4, Beira Alta^lt Estfemadyra— lOp Rlbateio— 1, Alto AFente|o— 1. Salxo Alentejo— ^1* Algarve— 1, Acores— 1, Madeira ^1,
For these two awards^ 8Ut>mll OSLe or ftai cgrtihed by an lARU affiliated radio society and sand to REP-REDE Oos Emls- aore* Portugueses, Rua D, Pedro V. ?f4, LlatKpn, PortugaL and do not forget to |n^ elude 3 or 4 IRCs to cover tne expenses.
As eald before, the country is covered by somo rapeaiera for VHF and UHF. A re- peater's frequencies' are eatabllshed ac- cording to the lARU Region I band plan for VHF, So these are the repealers, followed by their locations. RV^QTOSE^Serra da Est r el a) R1— CT»LO(Lousa) R2— CTflFO (Fola) FI2~CT»LE (Lelrla) R3— CTBFF (FIgjeira da FozJ B3-CT»MAD (Pico SHwa-MadeIra) R4— CTOHS tMonsanto— Lisbon) R4— CTilMA (Serra do Marao) R&— CTiSM (CerroS. Miguel) R5— CT9SA (CaatelD Sranco) R6— CT»MO tMontojunto^ H7^CT»AR ^Arrablda) R7— GTiSL(SL LuJtia— Viana do CaslelO) Re-CT«SI (Sintrar R&-CT«ES (Eslremozl Ra-CT«VA{Volonoo>
UHf RIJ9— Monsanto RU1 — Serra da Est tela
In U»bon with « hand-held, tiy B*. R7, RS^andRUi.
Op&ratifjg Advfcs For Ucens&d R»dio Amateurs, the new publication issued by the 1ARU, is ve^y helpful for new hams in order to guide them in a good ope rat ton In the DX frequencies.
According to a proposal presented by GRA (Grypo de Radioan^adores do Al- girve)p Ihe tocal administration deUt^er^ ated that those interested could use oiher prefixes during VtfCY/B3 insiead of Ihe well4triown CT that we use d^Uy. So, dur- ing that period of time, a lot of Portuguese hams activated CO, CR, CS. and CU.
Some of these ;>rettxes have been In QRT since ttre independence of ttw ex- Por^jgu^se colonies in Africa, if we all re- member itie o!cf good days bacK in 1 97*15 in Angola GR6 (CQ6. XX6). Moaambique CR7, Portuguese Guinea CIQ. S. Tome and Principe island CR5, and Cape Vert Inland CR4,
It Js reaf nice when we have ottief pre- flKes in contests.
t sttll remember when I ivent on the alf usir^ CRSUE, COSUE and XX5UE In that time. We had a lot of tun. But this isn't ail We Just received Information from h4acau CR9 saying thai they would be uelr>g XX9 In tho ve<ry rvear future.
M Is a good chance to increase qum WPX Itsi
DXPEOmCWTO BERLENGAISU^ND
Four REP members. CT4UW, CT4NH. CT1 AFN. and GTiCEX^ were operative last March from Oertenga Island, 6 miles off Ihe Portuguese coasi at the city of Pertlche, working a very special (tst World) callstgn. GTQBf.
Eleflenga Is valid for the (QTA Award (tslandft or\ the Air), having IDTA's number ELMO, and obviously good tor WPX hunters.
The operation took pi ace from the existing lighthouse, under Portuguese adminiatra- tfon. Transportation and other facilitiea were graciously given by the Portuguese Navy. QSL cards via home calls {Caff book address). More about this later.
CRC— CLUBE DE RADIOAMADORES DE CASCA1S
This Is a result of the efforts undertaken by a group ot hams living In the municipal- ity of Cascais, This enolent village, found- ed In 1400, Is situated 12 miles west of Usbort and € miles from Roca's Gape, where the European continent |ust begins.
The area le surrounded by beachas. nice hotels, golf courses^ souvenir shops, and, Of course, the typical restaurants In which you muat try the real Portuguese cuisine,
CRC \s sponsoring two Interesting awards for licensed amateurs as well as SWLS worldwide:
1) TOO CT Award. For this one, contacts must be made after February t3v 1984. with 100 or more different CT stations, with at feast 3 CT3 (Madeira) and 072 (Azores) stations.
2) CCA — Cascais County Awsfd. Con-
HAM HELP
tacts after February 13, 1964, with the six adm i nisi ret tve dl vis tons In Cascais Coun- ty: Alcabidache, Carcavelos> Gaacais^ Estorll, Parede, and S. Domlngos de Rana. These two awafds are issued for any band, CW or phone, as well as mi)(ed- and slngla-band accomplishments. To apply, a Hat of conlacls must l>e verified by two amateura or local radlo-ciut> officials. Send a list plus 1 2 IRCs or USSSOO to CRC Award Manager, PC Box 209. 2752 Cas- cais, Portugal.
REPUBUC OF SOUTH AFRICA
Sui&Amko9n$9 Radio/iga fa* Durdsn Branch P^sbus f 05ff PO Box Duftafi 4000 RefiuNie nf SauSh Africa
On May 31. 19&4, to celet^ate Republic Day In Soutb Alrica, the Durban Brancti of the SARL will operate special caitsign ZS5RSA, Ihe operallon will cover 35- 28 tAHi. CW and SSB. as far as band con- ditions permit, This ia tfie titlh consecu^ live year thai this activity has taken pia(% and it has proved very popular. A specie) OSL card is normally Issued for contacts with this station.
0a Bruce P. Dunn ZSSXT
Am intef^led In modi ricati oris for a StarKlard C-11B 2m HT, especially how to reduce the output power,
Tim MgofV KL7FF
11tT*A"Stf»el
Juneau AK 99S01
f need a copy of the schematic and man- uai for a DuMont Mod, 274 oscilloscope. I will gladly pay copy and postage costa^
Robert A, Johnson N7CFX
&33 E. Gwinn Place
Seattle WA 9^102
TRINfDAD AND TOBAGO
JohnL Webster BYAJW
clQ D&partmant of Soil Science
University ot ihe West indies
St Augustine
Trfnid&d
WBst Indies
The biggest evenl In the WCY 1983 TTARS calendar occurred during the last week of October. This event waa a nation- af exhibition on communlcBtlons in which the TTARS participated. It was a major contribution by the governmenl of Trini- dad and Tobago to World Communica^ tions Year.
The ejtri kbit ion was officially opened on Sunday, Ociot>er 23, by Ihe President ol the Republic and was open to members of the public daily t>etweefi the hours of 10:{)0 am and &00 pm, until Saturday, Oc- lobef 29111. Tt>ere were exhibitors from att sections of ihe commercial communica- tions field, and many computers were In evidence.
The TTARS prepared an Impressive ex- hibit in Its attempt fo educate the public about amateur radio^ Brochures descfib- lr>Q our hobby were prepared and distrib- uted to ali visitors to our booth. We at- tempted whenever possibie to fiave three stations ofierating simultaneously, one on VHF simpfex or the iocal repeater and the ottier two on the HF bands Whenevet we had two HF stations on simultan^xis- iy, we tried to utili.ze two different modes In order to demonstrate tf»e versatility of this exciting hot^. The modes we wece aIHe to demor^lrate were SSB, CW, and RTTY. LMIonunately, fof miich of tfie ex- hibition the piopagalion was poor, but ilXMJt 1000 QSOs were loggied using ihe
special caibign 9V4WCY. (Anyone wish- ing to confirm a QSL with 9Y4WCT should QSL to 9Y4rr4
The antenna systems in use at 9Y4WCy consisted of two three-element trlband yagis for 10. ^5, and 20, a long wire for BO, and a KLM four-element yagi for 40. The latter presented quite a chaiienge both In finding a suitable site on which to posi- tion It ar^ also in the actual erection of the t^a^m. it was eventually placed, with the aid of a mobile crane, on a tripod on the top of the elevator shaft of the tHj tiding housing the c* hi bit ion, at about 25 meters above ground level.
We also tiad all of the oompononts Of a sateltite station on site with ttie exoecta* t^on that we would be at}4e lo work OSCAR 10. Unlortunateiy. thes was not to be, as proWems developed with ttie equlpment- WTien tliese probfema were eventually sorted out, it proved impossible to hear the satellite due to tf>e exiremely higli lev- el of VHFAIHF intefference being giener- ated tjy the lar^ number of comoutefs and othe oominunioatior\s equipment In operation on Itie site.
This was a great disappointment fo ua, t>ut we were still able to explain amaieur satellite corrtmuni cat ions to our visitors through the use of p€>sters, twochures, arid with the aid of the AMSAT AMS^t tracking program running on the low<ost Times TS-1000 computer
Other exhibits included a comprehen- sive publications display, vintage e^^uipn ment, a dispiay showing the progression of technology from tubes to integrated cir- cuits, an assortment of maps and posters, homebrewed equipment, and a seleciion of OSL cards and amateur- radio awards.
The WCY exhibition was the first real eixpoeure to the public I hat amateur radio here has received. It was quite a success for the TTARS as several thousand per- sons visited our t>qoth and 40 new asso- ciate members have joined the Society as a direct result of the exhibition. Most of them are now attending our current train- ing program.
Several companies and Individuals pro- vided much of the materlat used to help make the show the success li was. The TTARS would iike to publicly thank the fol* lowing for their contributions: ARRL, RSGB, JARL. AMSAT, CO. 73, Radio Ama- teur CBttbook, Inc, Van an El MAC, Kan- tronics, RCIS, Inc^ Computer Applica- tions, RCA, KORZ and KdCY of AMSAT Software Exchange. Bob Jackson AQ5X» and Jack Gutzeit W2LZX
1963 was the year that the personal computer age really got off the ground here in Trinidad and Tobago. In the latter half of the year, many of Ihe hams got into the act as well. As a result, the need arose for some guidarice Ifi programming Iri Basic for the newcomers from some of thne mc^e experienced compuier hackers. This too^ the form pi half-hour la£tura^Jacus- sion sessions on the air during the weekly 9Y net, conducted by Russ 9Y4RB and Uoyd 9Y4DJC This rwt rneets every Surv day at tSOOZ wi 7 159 MHz.
The finai notatt^e event in the 9Y caleU' dar occurred with ttve launch of STS^I^ Cdiumbia, with Or. Owen Garrio4t W5LFL on board. The poasit>ili|y ol worthing W5LFL starred up r^onstderable Intereet f^ere. On Friday. December 2nd, twiween 2322Z and 233QZ (Orbit 700— tfte only one on wtiich Or. Gafriott was supposed to be operatmg that reaiiy favored Trinidad), thi$fe viere at least a dozen 9y stations ke^ng a racket on W5-LFL's ran||e of listening hequencieS- ~ -but it was all to no svm\. Not a peep was heard from Oo- lumtiiB and ttiefe were a lot of disap- pointed hams tvere in Trintdad. We are hcpir^g for better luck next tirrie!
1^ 7Z Magazine • June, 1984
THE FIRST NAME IN ELECTRONIC TEST GEAR
NEW FROM RAMSEY-20 MHz DUAL TRACE OSCILLOSCOPE
Unsurpassed quahty at an unbeatable price, the Ramsey oscilloscope compares to others costing hundreds more. Features include a compo- nent testing circuit that wilJ allow you to easily lest resistors, capacdors, digital circuits and diodes • TV vfdeo sync filter • wide bandwidth & high sensitivity • Internal graticule • high quality rectangular CRT
• front pane] trace rotator • Zaxss • high sensitivity x-y mode • very low power consumption • regulated power supply • built-in calibrator
• rocic solid irjggering •high quaUty hook-on probes
$39995
high quality
hook-on probes tnctuded
RAMSEY D- 1100 1-MULTITESTER
Compacl and reliable, de- Signed to service a wide vari- ety ot equipment. Features m- clMde * mirfor back scale • double-jeweled precision moylngcoll • double over- load p^olect^o^ • ari Ideal low cosi gntl Tor the beginner or a£ a spare back-up unit.
$i99S
lest I'eftdft and battery tnc>tud«d
RAMSEY 0-2100
DIGITAL MULTITESTER
A compact easy ro use unit designed to operate like a pro. Featuring • 3^^ digit LCO • fow
BAT indtcalor • all range over- load protecttori * overrari^ge Indt- cation • auto-polarity • Tranala- lor tester • dual -si ope integra- tion • vinyl carrying cas&
S5495
hpE ^^*^ ^eads, battery & vinyl carrying c«s« included
RAMSEY 0-3100 DIGITAL MULTIMETER
ReiiBbre, accurate d[gitai measurements al an amai- ingiy low cost • In- tine cotor coded push buttons, speeds range seteCEipn • abs ptastlc tJll stand • recessed input Jaclcs » overload protection on s\\ ranges • 3'.^ digit LCD dJSpiay with auto 2ero, auto polanly & low BAT indicator
test leads and bdUtry incHuded
CT-70 7 DIGIT 525 MHz COUNTER
Lab quality at a breakthrough pnce. Features • 3 frequency ranges each with pre amp • dual selectable gale limes • gale activity indicator
* 50mVr5- 150 MHz typical s^nsnivity
• wjde frequency range • t ppm accuracy
Ml 995
wired include t AC adapi«f
CT'70 hii
SP'^ nicad pac^
199 »S
CT-90 9 DIGIT 600 MHz COUNTER
The mosE versa 11 le for less than $300 Features 3 detectable gate limes • 9 digits • gat^mdicatof • display hotd
• 25mV fa) ISO MHz typical sensitivity
• 10 MH^timebase tor WWV calibra- tion • 1 ppm accuracy
$14995
wired Includei AC adapter
CT 90kil, . St2«.9S
OV-i 0.1 PPM ovei) timebase . 59 95 BP-4 mead paelt ........_... 9.95
CT-125 9 DIGIT 1.2 GHz COUNTER
A 3 digit counter that witl outperform units costing hundreds more, • gate indicator • 24mV iJ.iJ 150 MHi typical sensitivity • 9 djg it display • 1 ppm accuracy ■ display bold ■ dual inputs with preamps
mrired inctudes AC adapler
3P-4 nicad pack ^.S-SS
" 1
ivn^n jHHiirtH
CT-50 8 DIGIT GOO MHz COUNTER
A versatile lab bench counter with optional receive frequency adapter, which turns Hie CT-50 into a digital readout for most any receiver • 2S mV (§> 150 MHz typical sensitivity ■ ©digit display * 1 ppm accuracy
* 16995
CT'SOliii . -
BA^1 meeiver adapter M .
$139.35 14,95
DM-700 DIGITAL MULTIMETER
PrciTflissional qualijy at a hobbyist price Features include 26 different ranges and 5 functi-ons • 3 -.digit, Vi jnch LEDdispiay • automatic decimal placement • automatic poiarily
$11995
wired Includes AC adapter
DM-700**it S9f.95
MP 1 prci*>e set . . . .. 4K
PS-2 AUDIO
The P^-? IS handy for high resotutlon audio resoluhon measurements, mul- tiplies UP m frequency • great tor PL tor^e measufemenis • multiplies by lO Of 100 • 0 OtMz resolution & buNt-m sfgnaJ pfeamp/condittone/
$4995
PS-2 k rt
539 95
PR-2 COUNTER PREAMP
The PR-2 isideat for measuring weak signals from 10 to t.OQOMHj • flat 25 db qam • Bt^C connectors * great for snifiing Rf • ideal receiver/TV preamp
$4495
vrif^ inctiidfti AC adapter
PR-2 h^ S34.9S
PS- IB GOO MHz PRESCALER
Extends the range of your present counter 10 6D0 WHj ■ 2 stage preamp
• dfVJde by 10 circuitry • sensitivity 25m V £ai 150 MHz • 8NC connectors
• drives anv counter
mrfrttd Includes AC adapler PS'iBk+t
|49.§S
AQCESSQRrES FOR RAMSEY COUNTERS
Telescopic whip antenna— BNC plug .. $8.95 High impedance probe, light loading . . . 16.95
Low pass probe, audio use 16.95
Direct probe, general purpose use 13.95
Tilt bail, for CT-70. 9{), 125 , 3.95
massfi^ cf^^ge^
BLk«ii iimi,* \.tt.
PHONE ORDERS CALL
716-586-3950
TEUX 466733 RAMSEY CI
TERMS • silisldCliDn guiranteeci • eurcrmefitf lOdivs al nolple*$«d rdurn in oriqmil iQfrrr lar refun^tt • i64 §' : tgr f hippinq inil ErtsurJfice to i miieiinum it StQ 00 • &vers.ei£ idd 15' : far iur1>4:« titiil • CQD atffi S2 5D |£D§ m USI onlyl « ordiri under S15 m add S! 50 * NT resident; add 7/^ iain Iji • S€ djf parts w^rrinty on ill kit; ■ I ^ar pjris A liDar w^rriiriv nn^l! wired umis
—^^^ -— === RAMSEY ELECTRONiCSJNC. i# ^ =iii==^i=: ¥ 2575 Baird Rd.
I Penfield. N.Y 14626 -26
^See List of Adverttsers on page U4
73M&gazme • June, 1984 127
THE MOST AFFORDABLE
REPEATER
ALSO HAS THE MOST IMPRESSIVE PERFORMANCE FEATURES
(AND GIVES THEM TO YOU AS STANDARD EQUIPMENT!)
LOOK AT THESE PRICES!
Ba nd
Kit
10M,6M,2M,220 440
$630 $780
Wired/TestQd
saeo
$960
Both kfi amf mmd Ufiits am compf&W with aii pmis, modutes. hardwam. arid crystals.
CALL OR WRITE FOR COMPLETE DETAILS.
Afso avmisbfe forfBmom site HnkinQ. cfos^sand, and renmto base
I
FEATURES:
• SENSITIVITY SECOND TO NONE; TYPICALLV 0.15 uV ON VHF. 0.3 uV ON UHF.
• SELECTIVITY THAT CANT BE BEAT! BOTH
6 POLE CRYSTAL FILTER & CERAMIC FILTER FOR GREATER THAN 1 00 dJB AT ± 12 KHZ. HELICAL RESONATOR FRONT ENDS. SEE R144, R220, AND R451 SPECS IN RECEIVER AD BELOW.
• OTHER GREAT RECEIVER FEATURES; FLUTTER- PROOF SOUELCH, AFC TO COMPENSATE FOR OFF-FREQ TRANSMITTERS. SEPARATE LOCAL SPEAKER AMPLfFIER & CONTROL
• CLEAN, EASY TUNE TRANSMITTER: UP TO 20 WATTS OUT (UP TO SOW WITH OPTIONAL PA).
HIGH QUALITY MODULES FOR REPEATERS, LINKS, TELEMETRY, ETC.
HIGH-PERFORMANCE RECEIVER MODULES
fi144 Shomi
R144/R220FMRCVRSfor2Mpr220MH2, 0.1 5 uV sens-; 8 pde xtal filters ceramtc fitter In K h^icat nesoriatorf font end for except lonal selectivity, more than -100 dB at ±12 kHz, best available today. Flutter-proof squelch. AFC tracks drifting xmtrs. Xtal oven avaiK Kit only $1 38.
R451 FMRCVR Same but for uhf. Tuned line ifont end, 0.3 uV sen& Kit only SI 38.
R76 FM RCVR for tOM, 6M. 2M. 220, Of commercial bands. As above, but w/oAFCor hel, res. Kits only $1 18. Also aval! w/4 pole filter, only $9e/klt,
R1 1 0 VHF AM RECEIVER kitfor VHF aircraft band or ham bands. Only S98.
R11 0-269 SPACE SHUTTLE RECEIVER,
kit only sea.
mlronics
^^33
TRANSMITTERS
• T51 VHF FM EXCITER for lOM, 6M. 2M, 220 MMzor adjacent bands. 2 Watts gontln- yous. up to 2^^ W intermittent. SSa/kit
9-
• T451 UHFFWI EXCITER 2 to 3 Watts on 450 ham band or adjacent freq. Kit only $78.
• VHF &UHF LINEAR AMPLIFIERS. Useon either FM or SSB. Power levels from 1 0 to 45 Watts to go with exciters & xmtg converters. Several models. Kits from $78.
A16RFTIGHT BOX Oeepdrawn alum, case wi tb tight cover and no sea ms. 7 x 8 x 2 i nches. Designed especially for repeaters^ $20.
ACCESSORIES
• COR KITS With Audio mixer. Speaker ampii- fief, tail & time out timers. Kit only $33.
• CWID KITS 158 bits, field programmable, clean audio, rugged TTL logic. Kit onlyS68*
• DTMF DECODER/CONTROLLER KITS.
Control 2 separate on/off functions with touchtones*. e.g., repeater and autopatch. Use with main or aux. receiver or witii Auto* patch< Only S90
• AUTOPATCH KITS. Provide repealer auto- patch, reverse patch, phone line remote control of repeater, secondary control via repeater receiver Many other features. OnJy S90. Requires DTMF Module,
• HELICAL RESONATOR FILTERS available separately on pcb w/connectors.
HRF-144 for 143-150 MHz $38 HRF-220 for 21 3-233 MHz $38 HRF-432 for 420-450 MHi $46
128 73 Magazine • June, 19S4
NEW LOW-NOiSE PREAMPS RECEIVING CONVERTERS TRANSMIT CONVERTERS
^1 C^ H^f^tfonics Breaks
the Price Barrier!
NoNeedtoPay$SOtoS125 for & QaAs FET Preamp.
FEATURES:
• Very Low Noise: 0.7 dB VHF. 0,8 dB UHF
• High Gain: 1 8 to 2B dB, Depending on Freq,
• Wide Dynamic Range for Overload Resistance
• Latest Dual-gate GaAs FET, Stable Over Wide Range of Conditions
• Rugged. Diode- protected Transistors
• Easy to Tune
• Operates on Standard 1 2 to 14 Vdc Supply
• Can be Tower Mounted
MODEL
LNG-28 LNG*5Q
LNG*144
LNG-220
LNG-432
LNG-40
LNG-160
TUNES FIANGE PRICE
26-30 MHz $49
46 56 MHz $49
137150 MHz $49
21 0-230 MHz S49
400*470 MHz S49
30-46 MHz S64
150-172 MHz $64
ECONOMY PREAMPS
Our traditional preamps. proven in years ot service. Over 20,000 in use throughout the world. Tuneable over narrow range. Specify exact f req. ba nd needed. Gain 1 6-20 dB. NF = 2 dB Of less. VHF units available 27 to 300 MHz, UHF units available 300 to 650 MHz.
P30K, VHF K[t less case P30W, VHF Wired/Tested P432K, UHF Kit less case P432W, UHF Wired^^ested
$18 $33 S21 $36
HELICAL RESONATOR PREAMPS
^
Our lab has devefoped a new line of low- noise receiver preamps with helical resonator filters bui It in. The combination of a low noise amplifier and the sharp selectivity of a 3 or 4 section helical resonator provides Increased sensitivity while reducing intefmod and cross- band inter- ference in critical appli cat tons. See selectivity curves at right Gain = appf0x.t2 dB,
Model
HRA-144 HRA-220 HRA'432 HRA-i ) HRA-i }
Tuning Range
143-150 MHz 213-233 MHz 420-450 MHz 150-1 74MHz 450-470 MHz
Price
$49 $49 S59 $69 S79
Models to cover every practical rf & If range to listen to SSB. FM. ATV, eta NF =2 dB or leas.
VHF MODELS
Kit with Case $49 Less Case $39 Wired $69
Antenna trtput Range
28-32
50*54 144-146 I45't47 144-144.4 146-148 144-148 220-322 220-224 222-526 220-224 222-224
Receiver Output
144-1 4a 36-30
144-1 4d 28-30 28-30
27-27.4 28-30 50-54 28-30
144-148
144-148 50-54 28-30
UHF MODELS
Kit with Case S59 Less Case $49 Wired $75
432-434 435-437 432-436 432-436 439.25
28-30 28-30 144-148 50-54 61.25
SCANNER CONVERTERS Copy 72-76. 135- 1 44. 240-270, 400*420. or806*894 MHz bands on any scanner. Wired/tested Only $88.
SAVE A BUNDLE ON VHF FM TRANSCEIVERS!
FM-5 PC Board Kit - ONLY SI 70
complete with controls, heatsink. etc.
10 Watts, 5 Channels, for 2M or 220 MHz.
While supply lasts, get $60 cabinet kit free when you buy an FM*5 Transceiver kit. Where else can you get a complete transceiver for only $178
For SSB, CW. ATV. FM, etc. Why pay big bucks fora multj mode rig tor each band? Can beJinked wrth receive converters for transceive. 2 Watts output vhf, 1 Walt uhf.
For VHF. Modet XV2 Kit $79 Wired SI 49 (Specify band}
For UHF. Model XV4 Kit S99 Wired SI 69
Exciter |
Antenna |
Input Range |
Output |
28-30 |
144-146 |
28-29 |
145-146 |
28-30 |
50-52 |
27-27.4 |
144 144.4 |
28*30 |
220222- |
50-54 |
220224 |
144-146 |
50-52 |
50-54 |
144-148 |
144-146 |
28-30 |
ZB-30 |
432*434 |
25^30 |
435-437 |
5<^54 |
43^*436 |
61.26 |
439.25 |
144-I4a |
432-436' |
''AddS20for 2M inpui |
t
V. -fc ti
VHF & UHF LINEAR AMPLIFIERS. Use with atK>ve. Power levels from 10 to 45 Watts. Several models, kits from $78.
LOOK AT THESE ATTRACTIVE CURVES!
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Typfcat SelecUvfty Cunms
of R&coJ\/srs and
Heiicai Besormto^s.
IMPORTANT REASONS WHY YOU SHOULD BUY FROM THE VALUE LEADER:
t. Largest s&fecifoo of vtit and t^t kits in the worki.
2. Exceptions f qualify and tow pnces due to large volume,
3. Fast delivery: most kits shipped same da y.
4. Complete, pfotesstonat instrtjction manuai^
5. Prompt factory service available and free phone consuitation.
6. in business 27 years.
7. Sett more repeater modules than all Other mtr^ and have for years^ Can givB quaJfty f&atures for much lower cost
Call or Write for FREE CATALOG
(Send $1.00 or 4 IRC'c for overseas mailing) Order by phone or mail • Add $3 S & H perorder (Electronic answering service evenings & weekends) Use VISA, MASTERCARD, Check, or UPS COD.
amironics, inc.
65-D MOUL RD, • HILTON NY 14468 Phone: 716-392-9430
Hamtronics - is a registered trademark
^See List ot Adv^titsers on page 114
73 Magazine • June, 1984 129
DEALER DIRECTORY
Cui^-CT City CA
aty CA aO2J0. aiO-SOOa. Tmda 4l&ia6B San Diepj. 827 5732 jReno NV).
Fontana CA
Complete llns ICOM, DsiiTtwi. Ten -Tec, Mlrege, Cubic, Lmsr, ovtr 4000 <iiicitToidc
metit^. AIb CB ruila^. iMndmofaUif FimtuaK Ebrtf^ic^ SiSS Sictn Avt., FantUM CA M335, 8^3.77 14.
San Jow CA
Bfty vei^f new«tit airiAtciir rmd&a ^ote. New fle med Arri«lRjj- laiifu uiJoa 6c lervice Wc tetture KenuoDd, LCOM. Azdsi, Yasu. Ten- Tk, Svttec 6( mum man. 5h«vcr Rtdia, loc.t 137B So. lluKHs Avw., Sui Josr CA 951^,
v s^ -^
New Ca-de DE
Futdry AuthKjrJzed Ekditrl Yteski. ICOM, Ten- Tesc, KDK. •indai, AEA, K*ntronic^ SftittK Full hat oi aeommim. So nls fix In DdAWarv. One milr eyff I'^^S. Delmwarr AmAtror SoppKir, 71 Mditikr^ BMi New Cutfa DE l9-m, 3^71^.
BoIkID
Hocl(> Mi>ufii;«li3 *re»*i iw^eit him de«lff . C*U I^JM fint iar AEA, A2jderv, KOK, Ten-TeCp But- i^mut. Ciiihcrift, and mnrel RJM Eleotnmlcit 4951 Ovfttutd. Bdiie [D ^lOS. :^3-401S^
PrestoTi ID
E/m. V^'BTWfl h« the Urf»t nock ol uxwteur ■nf in d» ImenfifwnLetn West *cid tbt b«t prtett Call (fw Jbr al9 >-t:]ui- ham needi. Hoh ntitrlhutinf, 7S So. Stale, freston ID ISSfiS^
Littleton MA
The relkble hajn itnrv HTtinit S£. Fidl IliK o( ICOM Ie KmwQoiL Ynoiti KTi, DralEje. D*ivi«^ 84 W a£x»HQrifa, Curtii Ii Trac ^yB9- Laivit^ Haider. Tda^'Hy-CaJn ptodutL Mlnge amfii., AUron P-5., Al|>hi l^dia pfM«ciDJv AHRL & KarilronJs Initfuction lidi Whistler radiir disiiictikrd. Fij]| line of coajt fittings. TEL — COM Elertrontr CommunicatlonL, 67S Great Rd. (Hi. ILBL Littlistoii MA t^H&a. 486*34000040.
Ann AfborMI
Set itt 1w prodiH^ ilk« Ten-Toc. R. L. Drake, DenTron and mtny more. Open MondaK thcmigti Salurday. 0830 to 1730. W'BSVGB, WBSITXO, WDSOKN. Ahd W8RP behind the raunter Pur- chaK Radio Suppl>% 327 E, Hoover Ave Ann
Livonia MI
Cvrnplrtv photo^tilttk Fi-3»9m Amateur tufie. repeaEer^ sat^tte, and «nn]nitc9 ippUcBtloail Call Paul ^^'DSAHO. Enccm flutovoliiilc], 27600 Scboolcrull Acmd, UvodU Ml 4iJiS0. J33-1&5I}.
Hudson NH
LsokS^hxnu. SWLs, and txptrinvntenr putt, booiks, pHT. anfmnut, Iwen. Cail for qtuHv Fokarft ELECTHONTCS CEVTOl, II LerwcD Romd |Ro4tte 3A». Hulion Ml (XlOSU SId-SOOS,
Albany, New York UPSTATE NEW YORK
eeni«^«id, ICOM, T»-T«, Bfldou Cuihcraft, Lajvn. HiBder. AttKL. Hy-C«lJi. R&W. MF]- Mirafe. Srw aAd laed equJ||WWt}t- ^itf^irLj the ■jnAbettr ci3ifnntun;tt>' ^n» t&42 Adirmdack El«43vtijci, InCt 1091 Central Av^uc^ Albus) M 12205, 456-0001 (OEte mite wett of Norths i^ exit SWJ.
Columbus OH
Tilt biBcst and bed lujn imre in the Midwtit |e*tiitti^ Ks^wood aiid odier qyjUiry pPBducti with worlciCkg dMf4A%T \S'€ ibH only tJse beat Au- thonzed Kenwood lerviee, IMvcnti AniAirur Kadin, Inc., 1380 Alda Dr.. Re^Twldjfauf^ (Co- himbut) OH 43Ptia. ififi-4£«7.
DaUas TX
IBM PCOTT IdO. suppitet npanson prtHi- uctii «id» natater bb Iw |»y TV. CATV. ■aleUiEe l»bbyte' fifECTonle prefect kitx-ap^ optQ. .More than 9000 parts Ln ftodt: irmicon- ductoFS^ ICi^ dJHTretiK. video acceaorict, looLi, audio, automotive, cabinets, compurRr peHphtiTAls. PleaK write for your free lM-f]4iR0 cAta]o((: Sabet F1octronic4. 13050 Floyd Rd., Sle, 104. DttUji IX T5!^3l 7S3-iaS0 llormrfly
PROPAGATION
DEALERS
Your Cdmpairy name and mesfsage can contain up to 25 words for as little as SI 50 y^ady (prepaid)^ or $15 per month (prepaid quarterly) - No mention of mail-ordar busing or area code permitted. Directory tott and payment must reach us 60 days in advance of publication. For example, advertistng for the September "84 telle must be m our hands by July 1st. Miil to 73 Magazine, Petsrbotougjb NH 03^, ATTN: Najicj^ Ciampa.
J. H. Nelson 4 Plymouth Dr. Whiting NJ 08759
EASTERN UNITED STATES TO
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7B |
Tfi |
7 |
7 |
7 |
7i |
14 |
14A |
|
Canal IQhl |
t^A |
It |
Ih |
7 |
7 |
7 |
7 A |
14 |
14 |
14 |
2] |
21 |
|
IMQLAM-El |
Ji |
7A |
7 ' |
7 |
7 1 |
7A |
14 |
14 |
14a |
14A |
U |
34 |
|
KAWAIt |
2i |
U |
14 |
7 |
7 |
7 |
7 |
14 |
E4 |
14 |
11 |
||
tMDiil |
U |
^^ |
71? |
TB. |
VH |
7H |
14 |
14 |
14 |
In. |
E4 |
14 |
|
JtfMi |
U |
li |
t K |
7s |
r |
7 |
7 |
14 |
14 |
^4 |
14 |
||
WKhCD |
u |
14 |
1*- |
7 |
7 |
14 |
14 |
14 |
14A |
E4A |
|||
fHii.jm«^ |
u |
I^ |
14B |
7fi |
■ -H |
Ta |
14fi |
U |
14 |
14 |
14 |
||
nrtnroffcica |
14A |
14 |
14 |
7 |
i |
7 |
14 |
u |
14 |
14 14A| |
14A |
||
SmiTM APtHUk |
7ft |
■1 |
7 |
? |
71 |
14 |
14 |
14 |
j4a' |
14A |
14 |
14 |
|
t>, B,S, B.. |
14 |
7 |
7 |
7 |
7 |
IVi |
14 |
U |
14A |
]4A |
14 |
14 |
|
W6&T COAfT |
]iA |
14 |
7 |
7 |
T |
-1 |
7 |
14 |
14 |
14 |
14 |
14A |
|
CENTRAL UNITED STATES TOt |
|||||||||||||
AtASlU. |
Yi^ |
14 |
14 |
7A |
7 |
7 |
7 |
l^ |
14 |
14 |
14 |
||
' ARQEimMA |
21 |
21 |
U |
14 |
7 |
14 |
14 |
2t |
llA |
llA |
21 |
||
AiitrnAiLiA |
21 |
14 |
i£ |
2£- |
71 |
^ "Er' |
■J |
1 |
7 ' |
n |
14 |
14A |
|
CAAiAL ZQAIE |
21 |
14 |
14 |
T |
T |
7A |
14 ' |
!4 |
14A |
21 |
21A |
||
Efiat,Aryp |
'.;- |
7 |
T |
7 |
7 |
14 |
14 |
14 |
14A |
14 |
14 |
||
HAWAII |
•JA |
14 |
14 |
7 |
7 |
7 |
7 |
14 |
14 |
14 |
21 |
||
tNtllA |
li* |
14 |
li |
7S |
7B |
rp |
7a |
14 |
14 |
14 |
<i |
14 |
|
JAP Ah |
l^A |
14 |
14 |
TP, |
7B |
7 |
7 |
14 |
14 |
E4 |
14 |
||
■It X ICO |
If* |
14 |
7 |
7 |
7 |
t |
7 |
14 |
14 |
14 |
It |
||
^ILIffiHES .L4A |
U |
14 |
TB |
71 ■? il^B |
14 |
14 |
14 |
t^ |
|||||
IVtRTO titCO |
144 |
14 |
Ii |
7 |
7 |
- |
£4 |
U |
14 |
14 |
14A |
14A |
|
HH/tH AFHICA |
73 7 |
' |
■• |
>f |
7B |
14 |
14 |
14 A |
14A |
14 |
14 |
||
U, S. E. n. |
14 |
7 |
7 |
1 7 |
7|i |
14B |
14 |
lAA |
14 |
14 |
14 |
||
1 WESTERN UNITED STATES TO: |
|||||||||||||
ALASKA |
14 |
14 |
t4 |
T |
t |
7 |
1 ' |
14 |
14 |
14 |
[,"! |
||
MftGSUTmA |
ill |
21 |
A ^ |
:.4 |
7 |
7 |
14 |
21 |
IlA |
lU |
21 |
||
MMtmMJA |
21A |
ZI |
14A |
14 |
U |
"A |
7 |
7 |
Tl |
u |
Uk |
||
CAMA^^ONC |
"in |
14 |
14 |
7 |
T |
7 |
14 |
14 |
U |
14 |
2\ |
lU |
|
tttaULHO |
>A |
7 |
T |
7 |
•1 |
7 |
14 |
14 |
14 |
14 |
14 |
||
HAM-AII |
:iA |
21 |
14 |
14 |
K |
1 |
7 |
*i |
14 |
14 |
31 |
21 |
|
IN&IA |
u |
14 |
14 |
14 |
7B |
7h |
7B |
]/- |
14 |
14 |
14 |
14 |
|
JAPAN |
TIa" |
14 |
t4 |
14 |
141^ |
7 |
7 |
14 |
14 |
14 |
14A |
||
MfNica |
u |
14 |
U |
7 |
7 |
7 |
^ |
4 ^ |
14 |
14 |
14A |
14A |
|
*HiLi?ipiNe3 |
14A |
14 |
14 |
U |
US |
7B |
.3 |
14 |
14 |
U |
I4A |
||
fUtHTO RlCD |
:^A |
14 |
14 |
7 |
T |
I |
,*L, |
14 |
14 |
14A |
I4A |
||
tOUTM AFflltA ^ ^ |
T |
1 7 |
7 |
71 |
71 |
7a |
14 |
t* |
14/ |
14 |
U |
||
M t t R |
i^l.* |
: "5 |
7 |
7 |
7 |
7 |
/A |
I4t |
14 |
14 |
K |
14 |
|
f AST C.QAWW |
lAA |
1- 1 7 |
7 |
7 |
T |
7 |
U |
14 |
14 |
1^ |
14A |
As Next higher frequency bend may also be useful
B= Difficult circuit this penod.
First letter = night waves. Second - day waves*
G = Qoodi F = Fair, P - Poor * = Chance of solar flares.
isChai^ce of aurora.
NOTE THAT NIQHT WAVE LETTER NOW COMES FIRST,
SLN |
WON |
Tije |
June |
■n-u |
mi |
S*T |
1 F/G |
2 F/G |
3 F/F |
4 F/Q |
5 G/Q |
6 Q/G |
7 F/G |
8 1 F/G |
9 G/G |
10 G/G |
11 G/G |
12 G/Q |
13 G/G |
14 G/G |
15 F/G |
16 17 F/F 1 F/F |
18 F/F |
19 20 P/F P/F |
21 P/F |
||
22 P/F |
23 P/F |
24 F/F |
25 F/Q |
26 G/Q |
27 G/Q |
28 G/G |
29 F/F |
30 F/F |
130 7B Magazine • June, 1984
-Ste.
^'AJeau
lHBSaO'3
irea ot paying too mucn lor your Ham geai? Tne new generation of Yoesu higrvf echnolog
equipment is designed with you in mind! New advances in computer-aided design and
robotics manufacture help you save money while bei ng assured of the best. .. from Yaesu!!!
p
fordable Excellenc
GENERAL COVERAGB
Continuous coverage on RX from 500 kHz lo 29 99 MHz in 50 Hi steps, wilh easy modification for MARS TX outside tne Ham t>ands WARC bonds toctorv installed.
ACCESSORIES FACTORY PACKED
Eiectfonic keyei, 600 Hi CW filter, speech processor. AM and FM unifs, all- mod© squelch Woodpecker noise blanker and receiver preomp all mciuded in fhe base price, not
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FULL PERFORMANCE
Full CW QSK. full 100 worts output ai 100% duly cycle {SS&/ CW/FM). and full nnicroprocessor control with dual VFOs, eigtit memories with bilateral memofy VFO swap, and personol computer (CAl System) compofib^lity moice the fT-757GX a winner, ot home or awav
FT-757GX ACCESSORIES
FP'757GX Swjtchmg Power Supply FP-757HDHeovv Duty Power Suppfy (tor 100% duty cycle operation). FC'757AT Aytomofic Antenna Tuner with Memory. FAS-l'4f? Remote Antenno Selector. SP-102 Speaker with Audio Filters, MD-1&e Desk Mic. MH-iSfl Hond Mic fiF'232C Computei Inierface Module
■vv
panli
ULTRA-COMPACT DESIGN
Ctiip components instoMed byYaesu's ossembtv robots signify cantiy reduce circuit board size, resumng in a rugged, lelioble transceivei with a weight of only dSOg, mctuding the stondord FNa-J battery
HANDS^FREE VOX
A VOX (voice-OCtuoted Ironsmit] unit is buitt-in allowing hqnds-free operation when the optionoi VH-2 Headset is used Ideal for tower work, public safety, or other applications where manual PTT control is madvisable. Level control provided
FULL FLEXIBILITY
Built-in S-metef. thumbwheel frequency progromming. HL LOW power swttch. busy channel and transmit indlcotors are stqndofd DTMF Encodef versions, as well as 220 MHz and 440 MH^ iiness are coming sooni
FT-203R ACCESSORIES
ns^7 CTCSS Module FBA-S AA Cell Cose. YH-2 Heodser, mm-12 Speaker Mic. FNB'4 High Capacity Bottery. PA-a Mobile Adapter. MM&-2i Mobile Hanger NC-15 Quick Charger AC Adapter FTT-3 DTMf Keypad
your Yaesu will get you through!
Prices and spedticatlons subject to change wiihoyt notice or obligation
w
AESU ELECTRONICS CORPORATION 6851 Walthall way, Paramount. CA 90723 (213) 633-4007 'AiSU CINCINNATI SERVICE CENTER 9070 cod Park Onve. Hamilton. OH 450^1 (513) a74-3100
S*930S Ootlofia} Accessories*
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