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i
RM- P,0. BOX 1010
BULLETIN ISSUED BY THE NORTHERN
BRANCHES OF THE WIRLLESS INSTITUTE Launceston
OF AUSTRALIA, TAS. DIVISION. TAS. 7250
November 1975
VOL. 5 No. %
REGISTERED AT GPO HOBART
for transmission by post PRICE 40c
as a periodical, CATEGORY B.
MEETINGS
November 11th North west Branch Meeting Lakin Hall
Ulverstone 8 p.m.
November 14th Northern Branch Meeting Civil Defence Rooms
: Bourke St. 8 pem, -
Y.R.C.5. Meetings
November 8 th
Novem%ér 22nd Kings Meadows High School 10 a.m,
November 8th
Novem%er 22nd Lakins Hall Ulverstone 2 p.m.
Contests
November 6th-7th YL Anniversary phone pérty
November 8th-9th BEuropean RTTY DX
November 9th Czechoglovakian
November 8th-9th ARRL CW sweepstakes
November 22nd-23rd ARRL phone sweepstakes
November 29th~-30th CQ Ww DX CW
Coming Events
December 6th & 7th Hamfert at Richmond.
December 13th (Saturday) Northern Meeting Bar-B-Que
at QTH of Joe VK7 ZGJ
December 31st New Year Barbeque at QTH of Gordon VKT7GW
o,
-
liovember 1975 FRHCVRYMY U4
is8s
s 81
"Pad@ —
g ‘ ,"A;I ;
= - lozthern Dranehlotes
The October meeting of the orthern Branch was held on -
the 10th October at the Bourke St. Civil Defense Roous.
Visitors welcomed included Peter Turner and from the llorthwest F3
Coast Graeme Rand, Ian LEllings, Adrian Sherriff and ITan L
Somingzton.
A letter was received from the council re our proposed
clubrooms and has been reprintcd clsewhere in this issue. It 4
will be discussed further at the next ueeting so worik cut your
ideas; -committ them to paper and pass them on toBrian V. 74BY
or Ld VATIL.. A letter was also received from tie Divisional S
Secrevary rezarding donations to Federal Funds and the meeting
has decided tuat the Nortihera Branch will pay its share of the s
donation provided donablons aleady recelveJ f;um memberslS ke
refunded« B
It is with regret that the-resisnation of Kevin ViT7d.i:
from the pouition of treaurer was accepied, hevinris. find-- E
ing tihe workload too hecavy wiile his studies continues.
Peter VK7:D was unanamouuly elected to the position for the [
remainder of the financial year. : L
The treasurers report shows sales for Auzust of 3,404 |+
and for September of 91 004 afld a bank bulaAce of §1, 269.71. L
_ The Horthern Branch has voted #50 to the Nortahwest -
branch-for tie estoblishuent of-the Horthwest Lepe&ter - The
latest rumour suggests it may be on channel 6 with the south- 5
ern repeater on channel 3 3
The venue for the ‘ine & Cheese tasting evening in
Tebruary is at this stage still undecided.
The mini hamfest was mentioned and a 1ote put on the
minutes to begin organisation in late March. If the ladies
have ideas for entertainment at the mini fest they will be
very welcome and could be pasoed on to any member of the
exacutive.
Notes VIA Bob VKT7Zihl
Aaeve her R page:
W
5
(a
o
Hortn-ucet Loics
The big event in the North-West this month was our meeting
which was held at the home of associate J.Davis. Following a
short meeting, a tour of Jims museum of radios and projectors
was given. This was followed by an unbelieveable supper thanls
to Jim XYL. I did not attend so I can give few details but
knowing Jim as I 80 all those who missed it missed something
extremely worthwhile. We hope Jim will continue giving the
higtory of radio a place in todays world.
Don't forget next month cur lecture on Gunsmithing will be
one also worth attending. See you all there.
Graeme 73's
ORANGE RICE
1 leroe con orense julce:
1 oz. sugar
2 0Z. rice
Put orcarz juice «nd sugar in pan. Add rice and cook steadily
until rice has absorbed &1l the julce & :.d is soit. (about 20
minutes). Stir occasion lly. Serve cold toppcd ith ‘thipped
crecm or ice creai. ‘
Greeme's YL
November 1975 Q.R.M. page 4
PROPERTY 34 BOURKE STREET - PROPOSED
CLUB_ROQMS.
2nd October, 1975.
MR. H.E. Hewens,
Wireless Institute of Australia -~ Tasmanian
Pivision,
P.0. Box 1010,
LAUNCESTON. 7250,
Dear Mr, Hewens,
Purther to your letter of the 11th July, I can now advise
that the proposed lease would contain the following provisions:-
A term of 20 years at a rental of $10.00 per annum, for
the site of the proposed extension, with right of access
thereto,
— Your Institute to prepare plans and specifications and
obtain a building permit, and complete the works to the
satisfaction of the City Architect & Planner within a
period ef 12 months.
— That the light and power for your part of the building
be the responsibility of your Institute, through a
seperate switchboard.
~— That the activities of your Institute will not disturbd
other users of the building.
~ That your Institute agrees to support and participate
in the Communications section of the Launceston Area
Civil Emergency Service.
On receipt of your confirmation of intention to proceed,
the Council's Spliecitor will prepare.the formal documents.
Yours faithfully,
fOI' C.A' ALIJ}BN‘ ,
Town Clerk.
November 1975 QRM Page 5
VHF NOTES
The DX season is just around the corner, if your gear is
not operating, how about working on it now so that when the
Stations are calling CQ you will be their to answer their call
. %.had noliontasgs on 6 this month although I have heard
stations calling Q" on a Sunday morning on 52.050 also ¥
VK2ZNW on 52020, e 7 ? 70 BB Nl
A six meter beacon has been constructed for the north
ern
area and is ?o be situated at st'Leonards. This w@ill
run 25
gg§ts to a Dipole aerial on a frequency 52.4 mh2 with
850 OPS
. We are awaiting PMG approval, once this is obtained
the urit
will be operational,
Two meters is also quiet although the VK3 repeaters have
been hearg during the Month. Hope to have better news next
month. 73" ;opm
Bob VK7ZRF has been transmitting ATV on 432 MHZ and pic=-
tures have been received at Evandale from Bob's Perth QTH
At first in the North? :
FOR SALE x x x FOR 3.1E x x x FOR SALE x x x FOR SALE x x X
1. Galaxy 550 w pep HF SSB Transceiver, PSU, 3.R Metér and
Mike. $300.00 OelleCo
2. 1GL 5w Mobile CH1,4,B, $100,00 o0.n.o
Steve Fraser VKT70A..- 57 9 ‘ 3
137 Penquite Rd. Launceston Phone 443383
or 48 Quayle 3t. Sandy Bay.
—— e
FOR SALE
LRT Recelver coaslste ~ith all coil boxes $40.,00
WANTTED TO BUY
Adv nce Signal Gener:-tor Model 62 or similer
Joe Gelston
40 Lavender Grove Phone 443832
Nevember 1975 QR PAGE 6
Most amateurs b; now will heve heard about the amateur satellites
-oscars 6 and 7= at present orbitting our nlanet, some of you
no doubt have already heard or have had QS0's via them, possibly
others would like to but don't know when or where to listen,
if you dear readers are one of these then read on, therels.mo
special time to start - thats up to you.
fhat you must know is when ogcar is in renge and next where
to point your beam, that is if you want to transmit. (If you
only want to listen almost any old aerial will d0)e
There are only three articles needed pencil, paper and
your lastest copy of 'Amateur Radio'. Under the heading
Project Australis you will find a 1list of figures for both
oscar 6 and oscar 7 and you will notice tuct all the degrees
(®W) zre under 50° and as the oscars are only workable Here
from 1600 t¢ 2400 you will realize that scme adjustments have
to be made.
First take the figure shown in the degrees column for
the day you intend to listen and add to it 115, if t.e answer
is 160 or above you will know the satellite ig in range. Now
take the time for the same day and add to it 7 hours 40 minutes.
This gives you the time the satellite passes the equaltor on the
orbit you will hear BUT there will be a further time lag
because the satellite is travellinz north from the equator on
the evening passes,so you will have %o wait until 1t zZoes over
the northern hemispere and down over Antarctica and its
then we can start to listen.
As a complete orpkit takes one hour fifty five minutes we
will have to add to the answer we zot after adding 7 hours
40 minutes to the time shown in 'AR' a further period
of time wiich will be less than the time of a complete orbit,
this time will vary with the degrees of the orbit and can be
taken from Table *,
1607 add Thr 39 mins 1850 add 1 ar 33 nins
1;8' n :11 n %g 1 18?0 i jlr " %2 1
1759 v 1 m 35w 2000 " 1 m 32 wm
180° w» 1 34 0 21095 Wit cva3fLom
220 to 240° 2dd 1 hr 30 minutes.
Lets work out an example ——
On April 15th 1975 'AR' quotes the following figures
for oscar 7
ORBIT TINE 2 LONGOy
1884 0137 740
First the degrees T4
Add to this 115
Answer 189
cont. PAG’E 7
(as this is above 1600 the satellite will be in range)
Now the time 1 hour 37 minutes
add 7 % adg »
answer 9 hours 17 wminutes
From table 1; for 189° we find the time 1 hour 32 minutes so
this also has to be added
9 hours 17 minutes
Plus 1 Y 33 minutes
and the answer is 10 hours 50 minutes Zulu
and the orbit 1888.
Its as simple as that but if you want to know where to
point your beam these bearings will be near cnough.
160° East
1709 frou SE to NE
180° to 200° from SSE to approx N
The 200° pass is directly overhead and from there around
to 2300 you swing your beam westerly
210° to 220° from S to HW
230° to 240°, " 'S to W
The period of time you should hear the satellite will be
For 1609 gpprox 10 minutes
= 1700 W 15 0
5 180° to 225° approx 18 to 20 minutes
and between 225° to 240° the tiue drops back to only 13 minutes.
In the examples used you start to listen at 10 hours
50 minutes Z with your Jeam pointing SSE, the satellite will be
in range for apvrox 18 minutes and you begm from S5E To N in
that period.
To hear an eariier or later pass all that 1s necessary is
to substact or =dd 29° to 189 in the exemyle shown and substract
or add 1 hour 55 minutes to 9 hours 17 minutes and continue
on from there with the necessary adjustments for the new times
and degzrees as already ex.lained.
Oscar 6 rececives signals betwecen 145.9 and 146 mhz and
retransmits thew in the serment 29.45 to 29.55 mhz on Monday,
Thursday and Saturday nights. : :
Oscar 7 .in mcde A receives signals between 145.85 and
145.95 and retransmits them between 29.45 to 25.55 mhz. In
mode B input frequencies are between 432.125 and 432.175 and
the outvut dowm link frequencies are between 145.975 mhz.
Oscar 7 operates every nisht and uses the above two modes on
altcrnate nichts. E e A
A1l the above info is for the evenin passes only howvever
this is where most ol the activity is and it wiil give you .all
the dope you require to get started un the satellites providing
you hove 'AR' -- and you should all have that.
Col VKT7LZ
Je&T. GUNN PTY. LTD.
50 Brisbaene Street,Launceston.
Telephone 2 2251
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35A GRANVILLE STREET, LAUNCESTON. 7250
Telephone 31 6191
for all your printing
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