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BULLETIN ISSUED BY THE NORTHERN P.0. BOX 1010
BRANCHES OF THE WIRELESS INSTITUTE LAUNCZESTON
OF AUSTRALIA, TAS. DIVISIOCN. TAS. 7250
December 1375
VOL. 5 NO.
~+REGISTZRED iy&
AT QPO FHOBAR T SyB
{ api Rt
b ey
2 Y w.
" for transmission byi'pogt -
1 ;:“, 3 ¥ PRICE 1400 Ao
ag a periodical. CATEGORY B.
MELTINGS
December Sth North West Branch leeting Lakin Hall
Ulverstone 8 p.m. Ladies Night.
December 13th (Saturday) Northern Branch Barbeque at
: Joe Gelstows QTH
40 Lavender Grove
About 6 p.m.
See further details in Northern Notes
Y.R.C.5. MOLTING
December 13th Kings MMeadows High School 10 a.m.
-for purpose of examinations only
Next meeting after will be February 28th
: 1
December 13th Lakins Hall Ulverstone 2 p.m.
Janudry. 10th..will be next meeting.
CONTTSTS
wiky g i w8 ' ob bl e N P db %o o A lise
rDevember Gth-7th ARRL 160 ‘metre | B !
December 13th-14th ARRL 10 metre
(!"’.F’T!—.f—.
December 1975 Q.R. M. ' Page 2
EDITORIAL.
Well, another year is over and soon we will be making
our new year resolutions. I hope one each of us will make it
to write one article for Q.R.M. At the last meeting there was
general agreement that Q.R.i.. should not fold up doe to
increases in costs but that it should be maintained and
include technical articles so please, how about one?!?! you
may post it to P.0. Box 1010 Launcestor and make the editor
extremely happy as there are no reserves of articles at all
at the time of writing. Due to Christmas holidays there will
be no January issue but there will be g February one and the
dead line is January 18th. At this time I would like to thank
Gordon VK7AW for typing the mail wrappers, Lindsay VK7ZLD for
posting Q.R.M., Joe VK7GJ, Frank VK7BC and Graeme VXT7ZAQ for
their monthly articles and the Grade 10 typing class at Cressy
District School for typing Q.R.I.
On behalf of all the people asgociated with the prod-
uction of Q.R.l. and myself I'd like to wish all our readers
a very happy Christmas and a prosperous New Year.
CUW 76
Graewe VETZGG
NOTICES OF MOTION FOR NORTHLRN BRLNCH a,G.ii.
Paragraph 7 of Northern Branch Byeclaws indicate that
notices of notion for the A4.G.,M. nust bc in the hands of the
secretary 21 days prior to the ..G.M. The Li.G.M. is to be held
on the 12th March so this means notices of motions necd to be in
by the 20th February, They will then be circulated to menbers
in the March issue of QREM prior to the LieG.M,
Perhaps there is also a neéd to ‘begin thiuking about who
you want or the cxecutive ncxt year,
¥ K ¥ K X ¥ ¥ * ¥ ¥ ¥ * ¥ ¥ K X X K KX K X ¥ K ¥ K X ¥ * * * ¥
Brian VK7ZBY our President and all the executive wish nembers
and friends a very happy christnas and & most prosperous new
year,
Wanted 3 only 85 nh torcids or
4£¥u 40047 TV line oscillator coils
70° or 90° TV deflection yokc¢ with focussing coil or nognetic
focussing included,
Contact Mark Corbould
268 Penqguitec Rd.
Phone 44 3223,
December 1975 QRIM page:3
Northern Branch Meetinfi_figtes.
The meetin: commencedcat approximately 2008 hours at
the Bourke Strect rocums with about 24 membexrs nresent. Brian
VK7ZBY reported on an cxcellent: hour of the examiner,
A vote of thanks was extended to Kevin VXT7ZAH for nis work
in the past as treasurer of the branch.
Correpondance was received from the town clerk confirming
use of clubrooms, the Northwest Branch thanking us for the
repeater donations and the Southern Branch requestinz members
for the Ameteur Advisory Committec.
The financial report showed an income of §1088.52 for
the month and a bank balance of $628,35.
A long discussion followed on the future of QR due to
increase in jostage cost which willi double in Februaxry,
there will be a possible subscription rise from $2.50 to $3.504
liost members were keen to keep QRM gzoing and have technical
articles included (could do with more too Ed). VK7ZGGE would
like some assistance. The mecting asked Graeme VK7ZGG and
Bod VK7ZRT" to form a commttice .to look into all aspects of
production and report to the next meeting .
Frank Morse then showed an interesting film on dcep sea
0il exploration call "Deep Sea Endeavor."
Notes via Bod VK7ZRF.
NORTH WEST NOTLS,
The biggest point of dissussion around the branch this month
was the cancellation yct again of the novice licence., One of
our associate mcmbers called on his local nember of parliment,
This rcsulted in a pronise to bring it up zt question time in
the house, unfortunately @ few hours later both houses werc
dissolved. Result--no hope of a novicc e¢xan until Februarye.
Needless to say there are some very irate would be amatcurs in
our branch at thc noment,.
Our Dcccenmber necting is going to be a Ladies Night so
bring the Y L's and X Y L's along for a treat.
See you there,
VKT7Z4Q.
Northern Branch Barbcgque
4t QTH of Joe VKT74GJd.
bring your own neav, bread sauce etc. will be supplied.
$1 donation to cover drinks,
Its on Saturday 13th Deccuber at 6 pn.
iddress; 40 Lavender Grove,
December 1575 : QRM - page 4
HF Notes
Conditions ove?‘the past few weeks have been predictabley
erratic on the three highcr bands and will probably remain so
for the next few months if the various predictions from the
observatoriecs prove correct as they usually do.
The lower thrce bands have been more active because of the
above agnd some good DX is to be had when le sol drops below
the yard arm.
Last months VK/ZL contcst seemcd to produce a greater
variety of DX on CW than phone after one broke through the JA
barricr. .
28Mhy; has been tuned occasionally and W's worked around
0300z at good strenght,
21Mhz 2200/0100z UZU. UBS. JA. HB. OH, CW. with J4's i's
UAO/JT.VRI. on phone a little ecarlicr.
14Mhz.0200/0600 KL7. SVI.SVO. YSI.UK6.2S2.PY1.PJ3.TI2.
XB. W. & most of EU. with VK7DK long path.
0800/1200z A6. VQ9. OH.SM. La. Oi. UA.
TMhz, Europe most days at weckends between 0300/0700z
with West coast and mid/south W/s after sunset.
73's Frank VKT7BC
WANTED TO BUY *¥% . NTED TO BUY *%* WiNTED TO BUY *** .NTED TOBUY
30 fort télemart - wind up - triangular sectione
contact David Chatterton
31 Kingston Street,
Norwood
or VK7ZGG Phone 469455, :
David would like o position in the field of corraunications.
Can cnybody help?
December 1975 2.R.M. ‘ Page 5
VHF Notes
At last we have some news for you. Six metres has
opened at least five times in the last week.
John VK7JV and Kevin VK7ZAH bvoth worked VK3ZAZ and
VK3AQN on Saturday 22/11/75 during a temperative inversion,
at the same time Kevin also worked a couple of VK3's on two
metres. The mainland repeaters were also usable during the
weekend t
Getting back to six metres our first opening was to
VK2Z:iY on 18/11/75, the opening lasted about fifteen minutes.
Again on the 13/11/75 we worked VK2BBR, VK47ZBH AND VK4ZRQ,
all in about five minutes. On Saturday 22/11/75 ZL TV was
watchable in colour for about three hours with QSB although
there was no sign of their beacon, ZL4LV was worked by Kevin
and Myself. As I write these notes ZL TV is snow free with
QSB and has been for about an hour but as yet nc ZL stations
have been heard.
Meteor scatter still provides a contact if you have
the patience to exchange a report. While working VK4ZNW
via meteor scatter on 16/11/75 I also heard VK4ZJB calling.
After working VK2ZAY on the 18th we arranged a sked with
him for the next morning. Reports were exchanged at 7.30
localtime
73's Joe VK7ZGJ
Since this report was written there have been many
other copenings on both six and two metres so keep listening.
HHK KKK HHX KH RN R*¥
« 7 FOR SuLE **% FOR S.LE *** FOR S.IE *** FOR SaLE
~R 88LF: good general coverage receiver in good condition-
needs rcalignnent.
ZQOKhz to 30.5 Mhz no B.C. band.
single converion - idcal for convertor usc $80 or best offer.
1 only 30foot TV nast $12
1 only 50 watt bise stetion low bond M unconverted
: $35 or best offer,
Contact S, Bevcridge
2- Murphy Place
Scottsdale
(Scottsdalc Primary School)
14 mhz to 50 mhz transnitting transvertor (no recciver) uscs
2 x 2/5 and 6/40 final of approximrtely 2 watts SSB out.
Includes crystal, i4 . $30
Contact: Joc Gelston VK7ZGJI
40 Lavender Grove
Phone: 44 3882,
Deccember 59754 QRM page 6
FET Conversion of TE-20D: fignal Gencrator
Gracme seardon VKT4iGG
The TE~20D is r.markakly similar in design to the LSG11
and so makes the conversion very similar to that described
in AR March 1970.
1. Remove all wiring and components concelved with the AC
power supply and filtery network.
2. remove valveg from sockets. The fets may be mounted on a
7 pin and a ninc pin plug or soldered directly to the board
or the underside - I did the latter.
3. Change thc 10K on pin 5 of the 64R5 to a IK 4 watt resistor.
4. Changc the 250K on pin 1 of the 64R5 to a 500K 4+ watt
resistor.
5. From pin 2 of thc¢ 64R5 bypass thce 300r rcesistor with a
100uf 3 volt clectrolytic and a 0.001uf capacitor.
6. 12BH74 socket.
Replacc with 2 of 2N3819
Druin to pini1 :
fate to pin 2 and Droin -$o.pin 6
Source to pin 3 Gatc to pin 7
Source to pin 8
7. 64R5 Socket
REDlJCO with an MPEF 102
Aroin topin 5. or 6
Gate to pin 1
Source to pin 2
8. Replace pilot light with an L.&.D.
9. Add a ninc volt battery and it should work.
Incidentally during the conversion I had to call on kelp
from Brian VK7ZBY and discovercd that an MPF 105 is no use
to replace the 6.4R5
also 1, if you use TIS 88's you may need 12 volts instead of
nine volts and 12 volt battiries are hard to comc bye
2. 4 2N3819 is much better than an MPF102 in pin 6,7,8
of the 12BH74 socket,
3. 1 placed the battery undcr the chassis and attached
it with &« strip of wluminum to the rear of the chussis.
4, Thc unit with LED working draws about 30mii.
Northern Branch Equipment Storc.
There arc still some goodics available = I believe they cane
via the NW. coast Printed Circuit board dVLllublbo
Double sided circuit board is cowming,
3 - gc¢t your ordir in now.
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