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THE WIRELESS INSTITUTE
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OF AUSTRALIA
TASIvIANIAN DIVISION.
P. O. Boz 85U, Hr oT3art»
MONTHLY BULLETIN. October, 1961.
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PRESIDENT. TREASURER^ . SECRETARY.
Mr. To Alien,, • Mr. C. ^Harrisson Mr. K. Millin..
VK7AI,. VK7GH. .".:.. •• VK7KA.
R.e^i^t^r^d^a^Q;«£. ^«_Hj2'b^,r^ ^or^ ^r^nan^s^i^njsj£0^t_a^ a Peri^d^caL.
General Meetin •
The next General Meeting will t>e held. a.t the Club RQoms;,
147 Liverpool Street, at 2000 hours teharp.. The date W©dnesd.ay Oct. 4th.
will. be welc.oi-rie. at all hours?
LECTURE.
Th& lecture.. this month will-Tse given by I'/Ir, J« Brovm and. i.&. entitled
<tBaaic Transmitters". This will T3a. of consi'dera'ble interest to old an<i-new-
members', alikeand enthu&ia.sts sliould look forward, to the lecture,.
Chairs for Olubrooma.
Your Execu.tive. is at present trying f. o procure, chairs
for the Clubrooms ad it is in the . interests' of members'to-assist 3,n this very
necessary e.ffort. Otherwise our meetings will be. the only on&s h&ld. in vertlc;
anima.tion. ^•A1L offers. wi.il. Tse gratefully received' an<i minor repairs can 'be
©ffec;ted. if req.uiredo Threa pie.ee. lounge suites would be esp©oia.lly w&lcome;
ZONE IffliETINGS. No indication has re. a. ched Editor to <la.tel of'1;he. 'tim&
your
or . pla-ce of me-e-tings normally oondueted T3y -the'. North&rn or- North-Western
Zones. W© have: not' fQrgotten -fchem and: hop& to hear from them in due.. o-ourse.*
VHP Qroup. (The Boffin Boys)
The next meeting will be held at the Clubrpoms.. on- Wednesday 18th
Ootober at the usual -fcimeo Listen to 7WI for detalla. of a.ctiv^.tiea. ~
Fifteen members voyaged -bo Llanherne, Airport a.t our last meeting, - final-ly-
struggling back to town a.t 0050 hours Thursday, I-t was a. most interesting
ev^i^ng burning around, in- DGA v/a^ons inspecting various installa.t.i.o.ns from.
a- 3^'° pulsed 500 Mcs. DI'vLE to a number of 1.00 watt ISO' Me. transmitters,
not'to m&n-bion the control tower Yifith, of all -things, 5£a Tx. and. Rx. on 118
M:c®. AR7RX*s also a^emecL q.uite popular,,
Our GW experts, seemed to a.pprec. iate the fact that the-TTR Sig. -'sent
out.' from, Tea-tree had th& T's too aloaely spaced.
informa-bive e-veningo liicJ'ia.sl
'
W© really had. qui-be an enj'qyab.te. and
S?ZAV, had the'-fchrilf'of a- pcfck&ted 8X, 15:OA (5.00. wa.tts on 500 Mca. for the
DC banders), for sii few mome. nta. . , . ..
Three, mo'biles. using our SIvDC c.ommu. nicators were, a.c-tively engaged on the
trips, down. 7ZAQ and 7ZAI (Easy Baker) (toiiig •th;e talking running bumper
to bumper and 7ZBE finishing a. fev/ miles, fur-fchoi1 back.. . .. .
W© nearly d-id not have' Br»yan, YZ.BB'y/ho was unlucky 'enough to miss out
on -acconimo'dation at East Ri.sd. on and was. -fcold by' a law man "Transmitters in
car's'are~i 11 &gal". The said of.fi.cer will . be . fincLing things p.ut-. through officia
ohannela no. cLout3. t; .. can't blame' the fellow "though, Bryan (lid , look somwv^hat
like. -bhe. tr usual customers in the "bu. lls".. . "on'Monday a.t 9 p. m. and. a. mobile
around 76Ma;So would... 'be. a. 'g.opd inve.stment. f. or . him.
Our axhibit a.t. 'the.. H.o'b"6ie8 and Gapeers Exhl^i-fci on': went . well-. 7ZAV
had over 100 contacts- on. VHP, ma'ny of •.:€Hem 2/5 houra duration. Thos& who
know will realise that only "Ths Voicef1.. could havej talked- that long
WIACTas) October 1961". Pa.. eg
VHP Notes Contd
Cro&s Band Duplex Contacts seemed, to provide the most interest, Re®-
eived soom quite, good publicity via TV and. Best. stationSo Only 'bad result
was the capture of David 7ZAY l3y a visiting YL. 7ZAV managed to felude the^n..
W© hope Bavid will not be out of action'too longo
New . Galls heard on the ^tX are- Nsville 7ZEE and David 7ZAY within .'a.
'block_ of each other at V/est Hobart, Neville is using borrowed §ear . says his
Z call. is. only transitional'but has bought a 522. e Personally, I-am-~ s tumiped.
I can't'see.. how he'll get thething going on 40I-.DC and it hasn't a. key-ja.ak
so. -wha. t will. you use it for Nev? 2i¥&
The; . per son generating an-FM signal on 49, 5 Mcs., with QSB pealcing. East
is re-q.uested -fco make himself known as he is disrupting . 7ZAV's'TV. viewtng.
Michael has. bean hearing it ra-the. frequ&ntly recently and is bec. onu. ng tired
of racing up and down stairs: to liste.n for DX v/hidi doea not arise. This
is particularly unfortunate, as Micha&l livea in a- reGond. it ioned ligtithouse;,
It has even got him building AVFO.
^Have you noticed that Ned. Thonre's (7ZAI) ute. 'a number pla-t;&? Change-
the "W" to "Q" and you have QRM. and. how..:
I m3. ould.. l3e interested to hear your suggestions and info* to make this
page more "reada'bl&". Anonymous letters gratefully.. a.ccepted. and. a.sbestos
notepa.per provided free. All libel suits now and in the future to "be. thrown
at my manager 7ZAS, who put me up to this«
The for&going VHF notes c-ompiled and singed toy R« E№IETT VKZZAO,
:-S. W. Lo Grou ,
Last meetin . We had. a very good. attendance, at this. meeting. ' . After
bu&j. ne-ss was. dlapensed with aeveral old sets v^ere beailLtifully torn apart
by the younger members-with the aid of soldering irons which'we r©-'..cLonat@:Gli
T3y^some_member>s... We. did not have
:
time to complete the job Tsut ne3rti '-'irieotihg
thia_will 'be; done and parts sorted.. . Tha chassis will be very useful for . power
supplies and converters. Those who kindly donated their receivera are thaiiked
by one- and. all.
N^xt Me&tin.
A® I . said above, we intend to finish dismalitling the race-i ve.rs and any.
others we. collec. t in the, meantime. We; would like. to see as many'of the junior
mombera as possi'ble. and of course the older members, and ajiy vi&itors are
very welc.ome. '
LISTENERS REPORTS,
I received two letters- this month, one, from Jo® Gslston of Vtfesfbury
and the other from T-ony Redelph of Smi-fch-fcon, 'both are member's of the Inst»
and have applied for membership, in the SWL group* Thnak you very much for
writi.ng fellowsj,. details of SWLing will Tse forwarded, to you as. s. o on as. pos&»
Joe included a description of his gear which oompri&es. of a. Japanese, Army
RX for 80. IvGC and. a. good dual wave BC set for 40, -2. Q and. 15. He. is also 'bullA--'
ing an H. Fa RX,, a.ncL a. 3L metre converter
Fine Joe', it is interesting to hear what you listen with. How about
the rest of you chapa? Even if it is only an old dual wave set, it is inter-
esting for. others to hear what you can receive and. also the type of ante. nna
you use . ..
Te. c]-inic4X»F» Band Converter, 1.600 Kc. I. F.)
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W. I. Ao (Taso ) Oato^er 1961. Page- 5..
S. W. L. Technical (Gontd). _ _ . _ . . , . ,, _ _,___, ^..,,,^^
This--month I will cover the circuit and coil data and in the
c.ons.truction an.cL helpful hints on same.
As you can So'e the circui-b is straightforward and &imple« Plug in c-oila
are usecL. With no change, in circ-uitry these valves can be usedo . oX61iM,
EGIT 55, 6JQQ 6J8QAo I used the X6U'..I with good result s.
Coil data.
-575Tfc. Aerial Coil -^^^^ SBr%&iRi°§SoI§u^un<i
Oscilla.tor c-oil-Grid 22 tu.nns apaced to one and a- quarter inch
tapped fifteen turns from earth
Fee d Tsaak- 6 turns closeq.-wou. nd
7Mc a.erial c.oil- Primary 6 turns close wound
Seo.ondary 'S&V^urns close, wou. ido
_&^.h!
Os.cilla.tor c.oil- Grid SS'^turns, spaced -bo li inches tappecL fi,f.t®^n
turns from earth feed back '©4-turn.s. close. woua.d.
14 Mo. Aerial coil-Primary 5 jtn.irns close wound.
Secondary 14. turns spaced to l^r"
Oscillator c.oil-Grid 7 turns, spaced to 1" tapped three turns
from earth. Feed- back 2.. tumsinterwou5L(i with lower portion of grid winding.
28 Me. Aerial coil- Primary 4 turns: closa %ouncL
Sec-oncLary 7 turns, apaced -to li".
Oscillator c.oil- Grid. 5 turns spaced at li", tapped 1 turn from Ba»
Feed back 2. turna interwound.,
NoteAll coils are wound on 1^" (iia. Plug in formers with 22 gauge ©name!
wire. ' All windings are in the same cLiPection.
Aerial aoil primary spaced approx. -g" from earth end of secondary.
Feed back winding for 5. 5 and 7MG. c.oil& spaced approx. ^' from earth end
of grid. winding. That's: all for now, see. you next month.
75, Mike J&nner L7007-VK7ZAV>
SCOUT JMIBOREE OF THE AIR, October 2V2S.
If you don't happen to be helping a y particular Scout Group, could you
come on the air and give the 'boys a contact?
VK-ZL Contest.
Phone. 5.0th September, l&t Oc.-to^er
G, M. T»
CW. "7t!i October -to 8th Oc.tol3ero From 1000 G. MoT. to 1000
L WOULD I;iEMBERS PLEASE NOTE THAT ALL APPLICA':'IOK_FORMS_iy|l_HA.YE^THE^
t?^PRIATE"t;IEMBiR SHIP-FEE-ENCLOSED OTHERWISE THE APPLICATION'FROM WILL NOT
BE ACCEPTED.
»S. L. BUREAU«
Outward® cards, -bo all but VK7 cost IcL each. No remittance, aards will n^b.
be. forwarded^
As.~yet, no call books or log books^have come. to hancL although the ox'der
for same" has "be&n in for some os n&dLfiIerctTs. le time.
COUNCIL MEETIN&. , _ _ __ _ . , _,, ,,,.„__.
'The"^.ext Council meeting will be held on October 1.9th at the resident
of Mr7^I. "N'iGliois',"Crassy Stree t, Nswtown Thi. s date. is.the absolute deadline
for any notes to be inalucLed in the bulletin.
EDITORIMio
We, do extend our gratitude to Mr., lan Nichols_for condescending^to_
join us smalier"fry"inu the. Foxhunt. AI though ^lead a. stra. y by^thi^veteran
'thera was no dou-bt of the strength of signal • emna±ing_f rom ^a
certai n'millt" "bar near the cocner of Goulburn Street and Barrack^
whereupon after a tap dance 'by 7ZAS t^-e crew wi'bh(lrewbecau&&of, the^Q?N,
anrc. ontinued~'chasing the hounds. The- coffee provided ^y 7ZBE stimulated.
us. to later success.
We; are, informed that VK7EB upon purchasing a new lighter of Japanese make.
a.skea.''what~ the "spare, parts. we,r© and was told. "Spare flints, wick and. spare th
thiurib.".