QRM

1980sDocument1980QRM 1980

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AMATEUR

N
= QR&
RADIO
Bulletin issued by the North, North West and
Southern Branches of the Wireless Institute
of Australia, Tasmanian Division.

Registered for Posting P.O. BOX 275
as a Publication, LAUNCESTON
Category B. TAS. - 7250

DECEMBER 1980 VOLUME 10 No. 11

Meetings:- South 3rd, North-West 9th, North 12th.
EDITORIAL

We never learn! It seems each time we've had a special general meeting
something unsatisfactory occurs to make someone unhappy and feel that
democracy doesn't exist. I guess the meeting held at T.A.R.C. fits that
category in some ways.

The first motion which clarified associate members voting rights was
passed however that to Modify Council Structure was not.

Those proposing that motion, had some well argued points and felt that
their intentions were not appreciated by many who couldn't attend the meeting.
It is apparent that the time is opportune to think out the structure of the
W.I.A.in Tasmania and really any change necessary should ideally come from
a consensus between all and not be obtained at a meeting. It is hoped that
present discussions can establish the changes needed in Divisonal Council and
come up with generally accepted suggestions.

On a different note, congratulations to all concerned with T.A.R.C. =
A most satisfactory activity. Appreciation is extended to superintendent
and officers of the Department of Communications (formerly put)for their
participation, It is unfortunate that more of our members were not prepared
to travel distances to attend such events.

Christmas Greetings and may 1981 bring all that you desire.

73
Reg Emmett VK7KK
Divisional President.
Page 2 QRM

A THOUGHT FROM THE SOUTHERN BRANCH PRESIDENT

Another year has rolled by and by the time you read this there wont
be too many shopping days left before Christmas. But what of 19807
There was the outcome of WARC 7¢ about which we all heaved a sigh of relief.
There was the new handbook and the new rules that went with it. A host of
new call signs which we all welcomed and a rise in licernce fees which we
didn't and of course, late in the year third party privaleges. There are
probably many other events I've missed but I do hope there were scme good
events in your personal year. Christmas is the time of universal goodwill
but as Amateur Radio Operators we know that special goodwill as an integral
part of our everyday operations. There will be times when we happen upon
ill will on the bands but thankfully not often, Most of us will try to
foster the friendship that goes with our hobby and find enrichment therein.
My heartiest greetings for Christmas and may 1981 be a special year for you.

73
Bsrry VK7ZBF NBA,

If there is anybody considering taking up ice skating then contact Joe VK7JG
on what not to do. Hope your fully recovered so Joe.

Congratulations to Phil and Joe Gelston on their new arrival,

WANTED:~ For Repeater Tests

Crystal - 45.3333 MHZ or Close
by (Repeater 2 RX)

CONTACT; Peter VK7PF

FOR SALE: -
‘1 only FTDX 400 Yaesu HF Transceiver 560 watts p.e.p. output. Separate
VFO, speaker to match and manual.
1 only H.B H.F. Linear Amplifier uses 2 x 811lA output tubes

Interested Contact VK7DS: Phone Home: 002/296538
Work: 002/306175

FOR SALE:-

Model 15 teletype - $40.00
5 element, 6 metre beam - $5.00
TH3 Junior Beam . $50.00

Contact: R EMMETT 003/ 312090 (private)
VK7KK 003/ 443927 (Busin-:=s)
QRM Page 3

SOUTHERN BRANCH NOTES

The next Southern Branch Meeting will bhe held on Wednesday the 3rd
of December at the S.E.S. Rooms in Melville Street, starting at 8,00 p.m.
sharp. Members are requested to donate an item of food from the kitchen
or failing that, something from the shack for the christmas hamper. It is
intended that this raffle will be drawn at the W.A.G.'s Christmas Barbecue.
Sso far the hamper consists of one bottle of wine, so your support would not
only be appreciated, it is essential. ’

This year the Christmas function will be the WAGS barbecue at the
water works reserve on Sunday the 7th of December, starting at midday. There
will be a charge of $1.00 per Amateur or family group to cqver the cost of
salads, bread etc. It is a B.Y.0. Meat and Drink.

At the moment there is no firm date for the next S.B. Executive Meeting,
but it is probable that this will be held towards the end of January. There
will be NO JANUARY SQUTHERN BRANCH MEETING.

The proposed mini-hamfest organised by the WAGS will not be over the
weekend of February, beginning March as previously advertised, but will be
on the weekend following that - the 7th/8th of March, provided this does not
clash with the A.G.M. and Dinner. If this is the case, then this weekend
will be over the 21lst/22nd of February. This event will be held at the Lake
St., Clair National Park. More information regarding this function will be
in the next QRM.

73
Sue VK7ZSU

TEAR-OFF HERE

MCO{INATION FORM FOR THE SOUTHERN BRANCH EXECUTIVE

I; nominate sesesssevavesieo av CALL SION wieves e wiee e ssoessamieee
navnassse

for the position Of cscecescsvveasesco ON the
csecsoscnssecssess
ceessss
Southern Branch Executive for the years 1981

PrOpobed caavveveesnnvesoos CALL BLON seweniencs svssnesesss
svesanassssesseve

BECONACE . qessiviesssnsism woanesesasn GALll 819N sisvisevsassio
nowes
eeviien sie

SIgNEd cseccecccscrsrrscssseces-sersessssesss (BY Nominee)

® 2 0 % 0400600 @0 080 CS 00 P EOOIESCOOEOOE P (Date)
Page 4 QRM

NORTH-WEST BRANCH NOTES

The usual monthly meeting brought another good attendance of members
approximately 30 in all.

MINUTES of the previous meeting were read and confirmed.
CORRESPONDENCE Outwards - Letter written to Tas. Film Library for Childrens
films for TARG.
Inwards - Several letters were received for CLUB STATION
VK7NW for their part played in J.0.T.A. (Your
scribe was lucky enough to contact the World
Headquarters Station GW2 WSB - hear Windsor Castle.
The operator had 2 overs with the guides of Brownies
in the shack).
COUNCIL Ivan VK7XL gave details of the recent meeting.

TREASURER Bruce VK7ZDY presented an up to date report to the meeting.

MEMBERSHIP Max Boskell, VK7ZME, of Devonport was unanimously elected to
membership and welcomed to the Branch.
TARC Don VK7DP, the chairman of the Organizing Committee gave the meeting
details of progress. (This is now history! Jim).

QSL BURO Don VK7DP gave details of Pirate activities. Some QSL Cards have
been returned to the Branch.
BRIAN, VK7NBH gave a short talk on "BUNDLING" - an old Scottish
custom. Ask Brian for details.

Supper, served by the ULVERSTONE MEMBERS, concluded the
evening.

Until next time,

73
JIM VK7NOW

"TOPICAL TOPICS"

At the Special Examination held in the Burnie Tech. on Tuesday 18th
November - for members of the class coached by Peter, VK7BR and held over
" the past months each Thursday night at CLUB HEADQUARTERS, "Z" CALLS and
NOVICE CALLS willbeheard on the air around the end of December. Your scribe,
perhaps "missed the big one" by about 4 marks or so.

However, for myself and others who may have missed, as our Mexican friends
would say "There is always MANANA",

On behalf of our members, I would like to thank MR. MELLING of the Dept.
of Communication for putting this exam on, and everyone was unanimous in saying
thank you to the examining officer, Mr. MARSH for the courteous and efficient.
manner in which he conducted the Examinations.
73
JIM VK7NOW
QRM Page 5

ADVANCED ELECTROMNICS
5A THE QUADRANT, LAUNCESTON, TASMANIAN, 7250 — P.0. BOX 328 — PHONE: 31 7075

KENWOOD ———t
ROTATORS.
—_——

6347 "DAIWAR
DR7500 % MED Du7y
S.130S8. TRANSCEIVER .
7 .
___PReseT £/99
TS 8305. TRANSCEIVER . #1193 |DATIR DRT600O
% HeAvy Durss
PREseT 2269
TS 5R08E. TRANScEIVER. B800 _ ROTATOR. COM. WITH
TL 120. Ioow LiNEAR AmP. $258| » 3core ca6Le.
/0 égo_

PS 30. 20 AmP . Qgi
SuPPLY
AT 180. ANTENNA TuneR . $185| 4 Deir crocK -2y ms. $23-00
\VFO 230. EXTERVAL VFO $348 SINE ¢ SQUARE WAVE OSCILLATER
ﬁgs—Oo
SP Q0. LXTERNAL SPEAKER 75
RLc. BRIDGE 8 43-00
mc 355s. H/H micRoPHonE. $ 33
TRANSISTOR TESTER ~ $H 2L—50
Me 50. Desk m/cRoPHo~5,£55
ElLecTRONIC KEYER ,@50—00
7R 2u00. 2M. 800 CHn. ///%Lﬁ. 385 | ee om—
_ TEST EQUIPMENT
% do00. 2m. ALL MoDe . $625
TRIO. C5./5604 /5MHx Duar .77

é5#/ 75mm LABoR AToRY 5miHz
.f',\;wg Riooo
iGEA)ERQL CoveRAce KRECEIVER, OScilloscoPe. #2825
AC BRIDGE wiTiH SPo7T
__OscitlAToR $99.
Yy wave FfGlass WHIP 6.5 7-00 CoMBINED MULTIMETER
74 WAave S/STEEL Wit (P 146 5mue }Z_ 7-00 WITH TRANSISTOR TESTER JB63 —50
e wave Floiass WP b13-50 ARLEC YF370 MulTiTesTER
% wae S/STeeL wdiP. $8-50 WiTH _Hee RANGE 431-00
8 eLe. 2m T BeAm. 358 DAINA CN630 CRoOSS ~NegDLE
2m. Ringo RANGER. $44 140 - 450 MHz SwR ./PowEiZ METER.
___#/35-00
DricK Sprr7 | HanimEx
SusTEM B0 ComPuUTER CommoDoRE PET CompPuTéR
xf:'"L $d1
o 16K REM: 3750,
. 8K BAsic wiTH Mon1ToR ﬁ/i‘fﬁ.
4.
e
/a18. ARRL. HAND BooK
$4.00
Page 6 QRM

DX NOTES

The following is a summary of news by Col VK7LZ

(1) VK52ZBU was heard by VElASJ in St. Johns, New Brunswick, Canada at
05387 on the 26th or 27th of November. A distance of 11,080 miles
on 6 meters and has been confirmed on 28 MHZ,.

(2) VELlASJ listens and transmits at 05302 daily beaming VK5. Frequency is
somewhere between 52 and 52.050 depending upon reception conditions in
Canada.

(3) VK7RTT BEACON was copied in Staffordshire, England by ‘G4BPY and VK2's
were also copied by G4BPY (I'm not sure, but I think cross-band 28 - 52
MHZ QSOS were made.)

(4) If VK7's have 28 MHZ capabilities, listen our evenings for "G's" as
some "G" stations are looking for Cross Band ySOS.

(5) VK6RTT was heard S 8/9 in "G" land last Wednesday and Thursday nights
local time (haven't exact times).

(6) Also listen for WAIEXN who has a Beacon transmitting on 52.090 MHZ
between 1000 - 12002 and 2200 - 2400Z.

NOMINATION FORM FOR THE NORTHERN BRANCE EXECUTIVE.

I, NOMIinNate ...eeveceococececese CaAll SigN vveveveeeeeeeeenees.. fOr the position

Of soecoccsccoccoccscossoesssoess On the Northern Branch Executive for the year

1981 PropoSed cececvececsccccscssssssscsscss CAll SION tvveveerrvvernrencnenanan

‘Seconder .........................;........ Call SigN cecececcecscrscscncssnncs

Signed ..cccececscccccvccscssscsnscssscesess (By Nominee)

‘ eesseveecsecescsecsecere (Date)

FOR SALE: =

(1) 3 pair crystals to suit Yaesu FT 620 and FT 620B Frequency Coverage
50~62 MHZ =~ $30.00
(2) TS900, VFO 900, PS 900 300 watt 3.5 to 28 MHZ, mint condition, as new,
only 3 in Australia complete with service manual. - $795.00
(3) Tokyo Hy=-power, HC 500A, 500 watt Ant coupler, as new, 1.8 - 30 MHZ
et $80.00
(4) Hansen F.S. GOOA, pep Reading Watt Meter, 1 kw MAX, 1.8 - 30 MHZ, as new,
Some good gear here for the offering.Interested? - $65.00
n n phone (003) 317914
QRM Page 7

PLESSEY
m_@ ICATI ONS
GELSTON COMMUNICATI
TWO WAY RADIO SALES & SERVICE

Postal Address: 40 Lavender Grove,
P.O. Box 1311, LAUNCESTON, TAS. 7250
LAUNCESTON, TAS. 7250 PHONE: (003) 44 3882

LAY-BY accepted Finance arranged
In stock for immediate delivery.
Jaybeam 8 element 2M yagis $%53.00
Ringo-Ranger 6dB gain 2M vertical $55.00
IC-2A 2M Hand Held $312.00
IC-HM9 Speaker-microphone to suit IC2A $24.00
Heathkit BI-directional Wattmeter IOOMhz-IGhz Cost $210.00 will accept
reasonable offer BRAND NEW,
AT200 antenna tuning unit gI20.00
Astro Scan Base Monitor Antenna covers 25-50,140-170,450-512Mhz %60.00
FT22IR Two meter Transceiver with digital readout %500.00
Reyco 40m Antenna Traps $£43.15 W2AU Balun with built in arrester $34.5«
Orders taken for all other ICOM equipment.
Icom IC-720 available next FEB. $1379.00 Order now to avoid delay.
Most other equipment EX.lMelbourne.
LRG . Tg DP AG Bl(5S5 A R B S G €DB T i€ A S s D

VHF Notes.
As the month progressed so did 6M activity during the last week € has
been open almost every day to VK or JA. Lionel VK7HEL worked over I0C
JA's during one opening.
The opening to KH6 provided many of the "new" calls with their oest IX
to date,
During the week VEIASI heard VK5ZBU and the VK6 beacon has been heard
up to 89 in G land.
Some predictions say that this year will be the peak of the sunspot
activity not last year so keep an ear on the band for that elusive
DX I am sure it will pay off.
Once again 2M has also provided plenty of activity with several large
inversions during the month.
Hobart stations were heard working simplex into Melbourne and many
stations enjoyed the activity which we in the North take for granted.
73 till next year
‘ Have an enjoyable Christmas.
Joe VK7JGe.
Page 8 QRM

STATE NEWS

Council Meetings

Novembers' meeting was held during TARC. Eight new members were admitted.
Next Meeting, January 10th at A Boon, New Town 1.00 p.m.

Subscriptions
Note that the rates for 1981 are: Full and Associate $24.50
Pensioner and Student $16.50
Family P.0O.A.

Our $24.50 is about mid range of those in other states.

Annual Meeting and Dinner

This year is in Launceston, possible 2lst March.

Northern Branch Broadcast Roster

M. Ives December 7 and February 1 ) L. Harper January 4
R. Harper December 14 and February 8 ) D. Bailey January 11
B. Yeoman December 21 and February 15 ) J. Gelston January 18
K. Kirkman December 28 and February 22 ) A, Everts January 18

Scramble Co-Ordinator: December - Andre Everts
January - Les Harper
February - Ken Kirkman

NOMINATION FORM FOR VK7 FEDERAL AND ALTERNATE FEDERAL COUNCILLOR.

I, NOMiNAte ceeeeececcnccosccscsscsvscsscoces CALl SIgN tevvevnovrcacanncns

for the position of VK7:- ( Federal Councillor
( Alternate Federal Councillor

* DELETE THAT NOT REQUIRED
for the year 1981.

Proposed cecevocecscccsccrsncssasssscesscase CAll SIGN ciieeeeoeiveranennnn

SECONACL cccvvovsvnnccncsscnsscscressscssee CAll SIGN LIV il E T oo vess e

I, the proposed, here-by accept the nomination for the above position

Signed ceeececcccsscscsssccscscacass (NOMINEE) cevsecevceascsscsssas (date)

Forward to P.O. Box 1010 by January 10th, 1981.
QRM Page 9

AMATEUR ADVISORY COMMITTEE

The last meeting was held on October 4th. The minutes of last meeting
were read and confirmed. Minutes from VK6 also read with interest, no business
arose from minutes.

A number of local matters were brought up and by now have been resolved
but I will mention them for interest.

Scrambles - A report that stations, taking part in Northern Branch
scrambles, were apparently not listening on transmitting
frequency and not taking enough CARE to stop relaying
stations from other bands. ‘

Club Stations = The use of Institute call signs for other than Institute
activities has led to some confusion. Remember when testing
for broadcast purposes use your own call, someone else may
be using Institute call for the same purpose.

Aeronautical or Mertine Mobile - Read regulation 6.27, 6.24. The use of radio
' equipment on an aircraft requires special D.O.T. approval.
Not even the aircraft captain is in a position to give
approval. This all stems from a mid air collision over
New York which was partly blamed to the blocking of a
Beacon by a receiver's local oxillator readiation.

The next meeting is to be held on December 6th, 1980.

73
PETER VK7PF

NOMINATION FORM FOR VK7 DIVISIONAL COUNCIL

I nOMiINate eeeecececece-vereencoeosesonse CAll SIgN 4sevecneeenoononnnasaneanns

for a position on the VK7 Divisional Council for the year 1981.

PLOPOSEL sccesessoscsccsassssssscsssssceacse CAll SION ceeeeeceoveoeeeneosoennnca

secqnder e <=
1I = <§oY

I, the proposed hereby accept the nomination for the above position.

Signed cececececcenccccccnovecssccss (NOMINEE) .vvvsevsoscoco-veeseses (Date)

Forward to P.O. Box 1010 by February l4th, 1981.
Page 10 QRM

"SCENE AND HEARD" December 1980

We have come to the end of another year. Quite a iot has happened over
the past 12 months, particularly on the HF bands. The Middle East provided
much of the interest and excitement, with the capture of the American Embassy
hostages by militant students in Teheran continuing. We heard in late April,
the abortive rescue Mission by U.S. troops, and the aftermath of the raid.
How that Government was practically at a standstill in Iran, that a Power
struggle was in progress, for who does what. The various Factions both outside
and within Iran, extensively used clandestine radio stations in their propoganda
war, and still do today, but it somewhat declined of late, ‘due to the current
Conflict.

Also during the year, we witnessed the re-introduction of Jamming Signals
on Russian language transmissions from the Western Countries after a seven year
break. This was brought on by the delicate situation within Poland. This also
induced a Frequency-hopping battle of wits between the broadcasters and Jammers.
Another cause for the Jamming has been the Soviet Prescence in Afghanistan.
We now know that the Programmes supposedly coming from Radio Kabul, do in fact
come from within the USSR itself.

The deterioration in the International Situation brought about by the above,
has been reflected in the attitudes and programme content of the stations.
Economic conditions have also forced some broadcasters to reduce or even curtail
programme output. We have seen the demise of such Programmes as Radio Australia's
"Club Forum" BBC "World Radio Club" among others.

For example, the programme output of Radio Australia now mainly consists of
News, International Report, and Music over a two hour period repeated over 24
hour day. Gone are the days of Listeners' Request Programmes, Special interest
reports, etc. No wonder that the Popularity of Radio Australia has plummeted
from its once high ratings. The dropping of the QSL cards was the last straw,
as far as several DX organizations were concerned. Listen to Radio Australia
for yourself and see how they have declined compared to BBC or even Radio New
Zealand.

Incidentally, the BBC have several PTP SSB Relays of their Programmes.
These provide interesting comparisons with their DSB transmissions. For example,
the BBC World Service can be heard on USB on 20345 Khz at 1200 GMT whilst the
LSB carries the Chinese Programme from the BBC Asian Service. Also try 23195
Khz at the same time, USB the W/S and LSB the Asian Service. Comparative DSB
Signals are at this time 25650 (S/S) and 18080 (Asian Service).

The latest Radio Canada International Schedule received, shows an improve-
ment in Eastern European transmissions. The major cutback appears to be programme
output of Latin American transmissions. The best signals observed currently
are 2130-2200 with their transmissions to Africa on 11945 and 15325 and on the
latter frequency from 2200 to 2300 GMT both in English. The popular DX Digest
with Ian McFarland can be heard 2130 to 2200 Saturdays and also between the 1900-
2000 slot Sundays to Europe on either 11905, 15325 or 17875.

In conclusion, may I make a plea for more information for this column.
If you have any loggings or snippets, please send them to me for inclusion in
the February issue of QRM. May I wish all of you a very happy Christmas and
the best of DX during 1981.

73°'s

from Robin L. Harwood
HOBBY ELECTRONICS
280 EAST DERWENT HIGHWAY,
GEILSTON BAY, 7015
Telephone 43 6337

thepile
IT 18 NO S8ECRET THAT YOU HAVE TO HEAR THEM TO WORK THEM.
Improvement In your antenns improves both transmitting and recelving capabliity. We achleve
broadband cherscteristics by using up to four driven elements.
AN sntennas lleted Include balun for symetrical and clean radistion pattern, end uss "N’ conns from
70cm up.

15/11/10 mx Prica UHF CB Gain dbi Boom Price
ATN 20-30-1 rotary dipole....... .. .. $33 ATN 47-5. . ... .92 065M $35
10/11 mx modal Gain dbi Boom Price g io 102
ATN AT .o carsmnisnsvnn 0.7M $40
ATN 28-30-3 or 27-28-3..... 9.7 3.5M $80 ATN 47-11 o S170 1M $50
ATN 28-30-5 or 27-29-5... 12.0 6.5M $135 ATN 4208 oo LR 28M 360
éTﬁize-30-6 or 27-28-6...13.2 83M 8175 ATN BBO-14. .. . 125 ZOM %50
ATN 50-83-5.,.....covueennnn. 11.9 35M $85 Forrite Boluns. Ratlo /_Freq. Range Pri
ATN 50-536..... 0. 142 B55M $130 200W Ercapsutied3 go S o0
ATN 50-83-1%5...... ....o... 16.2 9.0M $185 200W Encapsulated 1:1 ,:" 100-600 MHz $12.00
2 mx 200W Encapsulated. 4:1-..5..... .3-150.MHz $12.00
ATN 144-148-8. .. ... 127 22m $45 1 KW Encapsulated 1:] 3-100 MHz $20.00
ATN 144-148-11.. .. 146 38M 855 1 KW Encapsulated 4:1 3-100 MHz $25.00
ATN 144-148-16....7. .5 17.0~-6.3M $70 insulators Heavy Duty
70Cm -Mode! No.1 5/8 elementon 2 boom........................ 34
ATN 420-470-6 . ... ..... 10.2 0.6M $30 No.2 large 3/8 element on 1" boom......... ... $1
ATN 420-470-14 ) 13.7 1.5M 845 No. 3 small 3/8.element on 1" boom........ ... $0.70
ATN 420-440-11............ 16.7 1.85M $55
ATN 432-16LB. .. .... 172 37M $80
Also available power dividers/couplers, quarter wave sleeve baluns and matching harnesses for stocks of two
or more arrays. Low loss coax, coax connectors & adaptors including UHF “N” BNC etc.
GOOD NEWS FOR IC 202 USERS FOR COMING DX SEASON
MIRAGE COMMUNICATIONS EQUIPMENT (U.S.A)) have just released MODEL 823 2
“ watts in-30 watts out AM/FM/SSB Amplifier. Weighs just 0.5 kg 144-148MH2 13.6VDC st 4
AMPS. $119.00 Also avallable (ask out many satisfied users) —
MODEL B108 s
FEATURES:
- Bullt-in Receive Preamp.
— Adjustable delay for SSB.
— Remote control operation with optional RC-1 Remote Control Head.
— Conservatively deisgned custom heat sink provides more than
adequate cooling.
— Automatic Internal change over relay or may be keyed from the
external transmittaer.
SPECIFICATIONS
FRaQUATICY Bange. e o swnsvsn iws o snayevn s e 144 10 148 MHz
RF Power e 5 16 Waus in - 80 Watts nominal out
Modes ... 63 S T AR N A iave et SS8, FM and CW
Receive Peamp o sy 1O db gain min. — 2.6 + .5 db noise figure
DC Power. . S » S 5% YA e SRR 13.6 VDC 10-12 Amps
Size e e e e e e N Y S =k Srle s e 53/8x3"x8"
Weight . e e sy o SN e B YT o AT T 3 pounds

MODEL B10TS MODEL B3016
FEATURES: s N9 « FEATURES: s
— Built in Racesive Preamp X — Buiit In Receive Preamp 29@
— Adjustable Ralay Dslay for SSB justable Reldy. Delay For SSB
- Rgmote Conirol Operation — Remote Contrcl Operation
- Autsmatic int2mal change over relay cr may be keyed from the - Autormatic Internal Change Over Relay or May be Keyed From
extaral tra-= mitter The External Transmitter
N.B. ! rags amplificrs ey 5 oyrs, parts & labour warranty except R.F. transistors which is 1 year
Page 12 QRM
52MHz SOLID STATE 30W P.A.
Roger Hord VK2ZRH
Roger Harrison VK2ZTB

The 30W 144MHz PA 'Superkit' from Dick Smith using the Solid State Scientific
2N5589-2N5590-2N5591 series of transistors has been very popular on the 146MHz FM
channels and is an economical way of getting medium power on this band. Dick Norman
VK2BDN used one to drive his portable 2300MHz equipment used to gain the Australian
distance record for this band. One is also usad in the highly successful VK2WI 2m
beacon. An article by Jamison Rowe VK2ZLO in the January issue of E.A. gave a detailed,
blow-by-blow description of how to build and tune-up one of these kits.
The 52MHz version described here was developed for use in the VK2WI beacon
and has given a good account of itself, delivering a measured 33W output with 12V on
the supply rail. The output is very clean and free from spurious emissions.
As can be seen from the circuit, only the 2W and 25W stages are used as the
2N5591 power transistor has far more gain at 52MHz than 144MHz. This necessitates
shielding the two stages from -each other when mounting them in g chassis or diecast box.
A shield, the full width of the chassis compartment, or diecast box, is recommended.
The board layout is quite straightforward as can be seen from the diagrams
and is only a suggested layout =- others are possible. If trouble is experienced
with spurious emissions or oscillation, 47 ohm, 1W resistors, installed from base to
ground-plane will cure it., For specific constructional details, particularly with
reference to mounting the transistors, refer to the article in January E.A. mentioned
above. '
About 100mW (or less!) will effectively drive this PA. An MPF121 amplifier is
excellent! Follow the general tune-up procedure outlined in the article mentioned
above, remembering that there is no 10OW intermediate stage.

13v 13v
CIRCUIT 52MHz 30W PA

10u}

40p
2N5591

g 2W driver stage output stage
pc board layout pc board layout

COILDATA
Ll, L2 9 turns, 20 SWG enamel on Neosid RFCl, RFC4 1% turns 20 SWG enamel through
722/1 formexr, F29 slug. ferrite bead Philips 4312/020/31550
L3 7 turns, 20 SWG enamel on Neosid RFC2, RFCS 11 turns, 20 SWG on 470 ohm, %W
722/1 former, F29 slug. carbon resistor,
14 6 turns, l6SWG tinned copper wire RFC3, RiCot Single tinned copper wire through
6/16" dia. spread over L". d F29 sliug.
Page 13

100k
H’H’ - ‘I : Jnt;;; +12.V,
L7

100p 27
; Fig.1. CIRCUIT
XTAL L5 2m CONVERTER
BZY88/C6V8
or5V6
& or8v2

40841
winding
G1
direction

D S
underside view

COJL DATA
All coils,with the exception of
LY,
are wound CLOCKWISE UP the
former.
Ll is wound ANTICLOCKWISE
up the
former. The start of the coi
l is
the earthy or 'cold! end.
Ll - 51;, 22 B&S toO."o’ tap at 2't,
spaced over 3/8"., Single Neosi
+084|
‘33Pgﬁ*'°°bﬂ ﬁg - 58t, 22 B&S enamel,;spac
ed over
3/8". Double Neosid.

CE e
0fp 680
L4 - Closewound with'28 B&S
IF enamel .
CAPACITOR
28MHz - 12 turns 33pF
14MHz - 22 turng 68pF ™
10.7MHz - 25 turns - 100pPF
9MHZ —_n " "
Single Neosid.

s 5%, 22 B&S enamel, closewound
! Double Neosid, .
|
’ L7 - 10t, 28 B&S enamel, closewound
é for crystals in the range 30,6¢
. ‘lac T |
L, to 46MHz. Tt for 65MHz orystal.
= - s e e NOTE: All slugs 4 x 5 x 10/F29,
Page 14 QRM

R.D. CONTEST NOTES

I wonder if you like me looked agast at the results of 1980 contest
published in A.R. We had the highest participation, a higher average score
than VK5 (the winner) - how come.

I went over the rules and past rules and can say that the only way VK5
won was due to the trophy calculation that gives a result proportional to
number of logs submitted. VK5 has about three times our population so can
muster more logs. Divide their total score by three and re-calculate score -
8800 points against our 18,000 points.

A letter is being written to AR especially protesting to headings
"Divisional participation wins R.D. Contest", support from VK5/8 Amateurs were
excellent. You will note that a new Contest Manager will be required after
June. Maybe if VK7 got it we could get the rules right - even be able to use
repeaters.

73
PETER VK7PF

HERE'S SOME GOOD ADVICE ON HOW TO HANDLE YOUR XYL - ELECTRONICALLY

If she talks tdomuch ...cvcveevevvmncnvecence vevsove .-...Interrupter
If she acts like the deVil .cceeececcsscsccssesscsssesssssCOnverter
If she meets you half=way ccevescoccccscarcecsncsesnsesessReCEiVEr
If she's RUNGLY ssceni coeses oo eenoiesevsgesiesssssnesesfocder
If she's Bored ceesciceccscesinineesonesesdnseesevnsssesssBRCLESE
If she's New in LOWN svesvevensesrsesnssansioseesessisnsssCONAUCEOr
Tf she Bings OFFKEY. csesosne danisessseesssesinessssesisosnsluner
IE Bhe GOBBIDE swessnieienssseosasoessessesssssesssssssspeRegilator
If she wants to get married cceececececcceccccsccsessssssRESiIStOr
If she is tired .sveeesscsccesescansasssssesansessscnsensessiake her ohm
If 8He 18 WEONG ssvevonmunsasvosivoanssssssessossessssssesneetifior
If she's Gp in the Alr cisescississosssavanesionassssssoslbahslormer
If she gets tooO exXCitable seeseveesecsscccccescecnnencasesslONtroiler
If she gets LoD EQL ssevvrnvennainnsonnssnessneisssesssiREAUCET
If she drinks LOO MACN cessvscesvesnansnsnsvsnssasessssssBAOLEStEr
If she 15 COLA csiessnsovvanrevasisoovsniosvennsossissssseinsulator
If she wants a date ceeseeerevrcerccssnssesarcnnsansasss.Meter
If you have tWO GILlS seeeeeteeccccecasscoscnevansssessssBAlternator

The above is from the S.A/W.I.A. Journal.
QRM Page 15

J.D. ELECTRONICS
W Is

445000 445000
64 }Wentworth Street,

NEWSTEAD

Suppliers of Yaesu Amateur equipment,k Test Gear and all

Accessories. Antennae and Fittings. Novices check

us now for a really good deal.

HS ELECTRON/ICS,
104 CHARLES STREET
LAUNCESTON. 3/-8942 Cordless,
Rechargeable 26 95
Regular Retai!

Soldering iron Price 32.95 ) /

- A
.
r hagdgé
240 volt, 25 watt soldering iron screw-in tip. ldeaslaflo

R O e Y0Py +Solders up. o 100 connectionsper charge
. 1.98Pr
84-8502. Sparetips: chisel shape.. ... No more cord tangle — and you can take it with you for easy
T R
soldering anywhere. Heats up in only 5 to 10 seconds and the
7%
“Pro high-efficiency copper tip spreads solder evenly. Easy-grip
solderi“ handle, pushbutton onjoff. built-in worklight. Plugs into 240
VAC for recharging overnight. 64-85805 . ....... . Sale 26.95
g
lren , .......... 3.28
Replacement Tip.84-2076 . ................

Replacement Tip
for Archer and Regular Retall
price 29.95 2

05 |
Veller Gun
For UseWith
64-9506
|CatNo.| Pkg.of2| :
Archer
Weller 81000 64-237 2.99
Puli trigger and get 100 watts quickly. Spot-
light for accuracy even in hard to get
arcas. Copper tip spreads solder evenly
Lightweight, comfortable to hold. 849508
Page 16 QRM

ASCA®R 7 AND R PREDICTIONS
A0N An7
uTcC OR3IT TIME DEJ. HMODE 0e31T TI4E 2F49,
DATE NP, Z WreT NP, Z ==

MON. 1 DEC. 13969 0012 »n0.5 A PTRE3 0020 79,7
TUE. 2 DEC. 13083 2023 51,7 A+l P7hor D114 03,73
WED. 3 DEC. 13997 0028 062.° X 27672 0012 77,1
THU. 4 DEC. 14011 0032 4.,z A 27501 010 01,7
FRI.« 5 DEC. 14025 0C37 on5.4 L) 2770370007 T,
SAT. b DEC. 14039 D042 oh.n 27714 0101 201
SUN. 7 DEC. 14053 0047 w7,7 J 27727 "0n1 75,0
MON. 8 DEC, 14067 0052 w81 2 27741 0055 R
THUE., 9 DEC. 14031 005- 70,3 s+ 27754 D145 1070,
WED. 10 DEC. 14005 0101 71,5 X 2776 0048 87,0
THU. 11 DEC. 14109 0106 72.7 A 27779 0123 -
100,
FRi. 12 DEC., 14123 0111 74,0 A+J 27791 0642 95,4
SAT. 13 DEC. 14137 0110 75.2 J 27304 013 90,0
SUN, 14 DEC. 14151 0121 Tb.24 J 27216 0036 33,0
MON. 15 DEC. 14155 0125 77.= A 27829 0130 Q7.
TUE. 16 DEC. 14179 0130 73,9 A+ 27941 0022 897.3
WED. 17 DEC. 14193 0135 30.1 X 278%4 0123 95.°
THI. 18 DEC. 14207 0140 81.3 A 27360 0023 °~0,.7
FRI. 19 DEC. 14220 0001 56.7 A+J 27279 0117 24.3
SAT. 20 DEC. 14234 000n 57.9 J 27391 001 75,7
SUN. 21 DEC, 14248 0011 K/a,? J 27904 0111 QZ,
MONe. 22 DEC. 14262 0015 60.4 A 27910 0010 77.r
TUE. 23 DEC. 14276 0021 61,56 A+J 27929 0104 091,72
AED. 24 DEC. 14290 D025 62.8 X 27941 D202 Tn,0
THU. 25 DEC. 14304 0030 64.0 A 27954 N0R2 - R’9,
-
FR1. 26 DEC. 14318 0035 b5.3 A+ v 27967 2152 103,72
SATe 27 DEC. 14332 0040 56,5 Jd 27979 0051 33.1
SUN. 28 DEC. 14346 0045 67.7 J 270992 0145 101.-
MON. 29 DEC. 14300 D049 58,9 A 23004 00A5 2-.5
TUE. 30- DEC. 14374 0054 70.7 A+d 23017 0132 100,.1
WED. 31 DEC. 14388 0059 71./7 Y 22029 NN 34,

THE ABOVE 1S BASED ON THE FOLLOMING DATA
AO7 PERIOD 114.94732-1.80n ¥ 10 =7 X ORBIT NUMZE®D
AO7 GRBIT [INCREMENT OF 28,7373 DEGPRES
AO8 PERIOD 103.22483=1,711 X 10 =7 ¥ OR3|T NUMBED
AO8 ORBIT INCREMENT OF 25.809827-5,2 X 10 =7 ¥ OR3|T NIM3E"
AO7 CAN BE ON EITHER MODFE A 0OR 3
VKTPF
IC260A
FEATURES
2m ALL-MODE TRANSCEIVER INCORPORATING A MICROCOMPUTER
CPU control with ICOM's original programs provides various operating capabilities. No back-lash dial controlled by ICOM's unique
photo-copper circuit. Band-edge detector and Endless System provides out-of-band protection. No variable capacitors or dial gear,
giving problem-free use. The IC-260A/E provides FM, USB, L.SB, CW coverage in the 143.8 — 148 2MHz frequency range. Thus the
IC-260A can be used for mobile, DX, local calls, and satellite work.
MULTI-PURPOSE SCANNING
Memory Scan allows you to monitor three different memory channels. Program Scan provides scanning between two programmed
frequencies. Adjustable scanning speed. Auto-stop stops scanning when a signal is received, in all modes.
DUAL VFO’S
Two separate VFO's can be used either independenty or together for simplex operation, and any desired frequency split in duplex
operation.
CONTINUQUS TUNING SYSTEM
ICOM's new continuous tuning system features an LED that follows the tuning knob movement and provides an extremely accurate
readout. Frequencies are displayed in 7 LED digits representing 100Hz digits.
Automatic recycling restarts tuning at the top of the band, i.e.. 145.999.9MHz when the dial goes below 144.000.0MHz. Recyci;ng
changes 148.199MHz to 143.800.0MHz as well. Quick tuningis 1 KHz steps is available, and fine tuningin 100Hz steps in the SSB and
CW modes, and 5KHz steps and 1KHz steps in the FM mode, is provided for trouble free QSO.
OUTSTANDING PERFORMANCE
The RF amplifier and first mixer circuits using MOS FETs, and other circuits provide excellent Cross Modulation an_d‘ Two-Srgr}al
Selectivity characteristics. The IC-260A has excellent sensitivity demanded especially for mobile operation, high stability, and with
Crystal Filters having high shape factors, exceptional selectivity.
The transmitter uses a balanced mixer in a single conversion system, a band-pass filter and a high-performance low-pass filter. This
systern provides distortion-free signals with a minimum spurious radiation level.
ADDITIONAL CIRCUITS
ThelC-260A has a built-in Noise Blanker, CW Break-in, CW Monitor, APC, and many other circuits for your convenience. The IC-260A
has everything you need to really enjoy VHF operation, in an extremely compact, rugged transceiver. Comes complete with mic. mobile
mounting bracket and English manual.
BACKED BY VICOM
90 day warranty and technical/spares support.
Typical Technical Characteristics (Australian model)
GENERAL. Number of semi-conductors: Transistor 72, FET 9, IC 44, Diode 90
Frequency coverage: 143.8000 — 148.1999MHz. Frequency resolution’ SSB
100Hz steps FM 5KHz steps. 1KHz steps with TS button depressed. Frequency
Control: Microcomputer based 100Hz step Digital PLL synthesiser. Independent
Transmit-Receive Frequency Capability. Frequency Readout 7 digit LED 100Hz
readout. Frequency stability: Wilﬁin +1.5KHz. Memory channels: 3 channels. any
inband frequency programmable. Usable conditions: Temperature: —10°C — 60'&
(14°F — 140°F) Operationable time: Continuous. Antenna impedance: 50 ohms
unbalanced. Power supply supplement: 13.8V DC £15% (negative ground) 3.5A
Max. Current drain (at 13.8V DC): Transmitting. SSB (PEP 10W) Approx 2.2A. CW.
FM (10W Approx. 3.1A FM (1W) Approx. 1.6A Receiving At max audio output
AE rox. 0.8A Squelched Approx. 0.6A. Dimensions: 64mm (H) x 185mm (W) x
2 §)mm (D). Weight: Approx. 2.7Kgs. Warranty: 90 days when purchased from
authorised dealers. TRANSMITTER. Output power. SSB High 10W (PEP) Low 1W
(PEP). CW High 10W Low 1W. FM High 10W Low 1W. Emission mode: SSB (A34.
USB/LSB). CW (Al). FM (F3). Modulation system: SSB Balanced modulation. FM
Variable reactance frequency modulation. Max frequency deviation: +5KHz
Spurious emission: More than 60dB below peak power output. Carrier Suppression:
More than 40dB below peak power output Unwanted Sideband: More than 40dB
down at 1000Hz AF input. Microphone: 1.3K ohm dynamic microphone with built-in
reamplifier and push-to-talk switch. Operating mode: Simplex. Duplex (Any inband
requency separation programmable) RECEIVER. Receiving system: SSB. CW
Single conversion superheterodyne. FM Double conversion superheterodyne
Recewmk? Mode: SSB (A3J. USB/LSB). CW (Al). FM (F3). Immediate Frequency:
SSB, CW 10.75 MHz. FM 10.75MHz, 455KHz. Sensitivity: SSB. CW Less than 0.5
microvolts for L0dB S+N+D/N+D at 1 microvolt. Less than 0.6 microvolts for 20dB
Noise quieting. Squelch sensitivity: Less than 0.4 microvolts. Spurious response
rejection ratio: More than 60dB. Selectivity: SSB, CW More than +1.2KHz at —6dB
point. Less than £2.4KHz at —60dB point. FM More than +7.5KHz at —6dB point.
Audio output power: Mcre than 2W. Audio output impedance: 8 ohms

V
1.@o
&80
,\
GELSTON COMMUNICATIO
Check it cut et your VICOM dealer. LAUNCESTON, p.o.
NS
BOX 1311
TAS. 7250
PHONE: 003 - 44 3883
DICK SMITH
OSCILLOSCOPE =~ G- SMHZ
@-1280 999

== VK ELECTRONICS == laboratory.

37 WEST PARKGROVEBURNIE 7320
oscilloscope
Cat Q-1280
SRR

SVPPLIERS
1IN
OF AMATEVR AND CB.
COMMUNICATIONS GEAR AND ACCESSORIES.
DICK SM)TH KITSETS AND C(OMPONENTS
WRITE& PHONE OR CALL (Ooq. 3 708)
WARRANTY AND AFTER SALES SERWCE
| 7//: S l{k ke /
}gg\ f_|~ _é,’(;{um
NoEL STUTTERD VK7ZNS [wNS e
& 7 ”@

R T R T TR I TR

POSTAGE PAID

REGISTERED CATAGORY "BY LAUNCESTON, 7250.

MR HeP SCHULZ
42 PIALANNAH RO
MT WELSON TAS 7007
F 7 00 1 02 VK7PS
NORTHERN BRANCH, W.I.A.

P.0., BOX 275, LAUNCESTON, TAS, 7250,