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THE WI. RELESS INSTITUTE
Q£_AU. SIB. AUA.
MONTHLY. BULLETIN. Tasmanian Division. APRIL 1961.
Box 85U G. P. 0.
HOBART.
Prioe 6d.
PRESIDENT. TREASURER. SECRETARY.
llr. T. Alien. Mr. C, Harrisson №, K. Mi Un.
VK7M, VK7CH VK7KA.
a-fc G. P. O. _H^barjfc fpr^ trB^i5vassion_b^ £°^t;_al S. £e21, i£dl°^1.
"GEN^ALllEETING.
The nex-t General Me e-b ing of -the Taemanian Division will lie held
a-b -bhe Club ROOIIB, 147 Liverpool S-b. on April 5-bh. 1961 seb SOOO hrs.
This is as usual the First Wednesday in the mon'fch, so keep i-b olaas.
A&UBO. NOTE THE TIME 20-00 Hrs SHARP.
LECTURE. ^ ^ . _ ...... .. _. ..
The Lecture this month willbe in ^hv form of a visit to •the Studio
of ABT Channel 2. This will follow itnmedio. 'tely on the business portion of
•bhe Meeting, henoe the neoessity1 for oommenoing a-t; . 2000 hrS* SH&.RP.
NORTHERN & NORTH-WESTERN" ZOHES •
e ime o w riting -there Is no infortn&'fcion to hand in regard •to
the nex-b Mee-tings og -bhese Zones. I expeo'b. -tha-b •fchey will 'be held on •the
usual nights bu-fc where and what will be on the Z'one Members will have •to
asoertain.
S.W. L. &ROUP. ^ _..... ....... .......
he same applies •fco this Group. The Meeting-night; will be on
12th. a-b -the Club'Rootas, apart from •fcha-fc no inforns. -t;ion.
V. H. F. GROUP.
Tho;nex-b Meeting of this Group will be on -bhe third Wednesday,^
19th. at-the Club Rooms. The last Meeting was a visit to •the Na-fcion-
&r~T. V. "S'-tatibn-on-Mt. Wellington. The multitude of^V.H. F. equipment in
^ts'e'oCTtainIy'~was'an~eye-opener, no-b wi'bhstanding this a number of members
oould be oited for giving the programme too rauch at-fcen-bion.
exo it ing reoen-fcly; reoen-fc auroras and magnetio storms have
brought"a"few"sigs. Try listening 7-10 d ays after a aurora.
'On Sunday nighl.,. Feb. 26-bh. VK7ZA.K heard a siSnal^elie^ed_to,be
tha-b of VK7L£"on<; 144"Mo7s. but no oontao'b oould be made. This^ however
indioa:bes"ti^ feasibility of Hobart-Launoes-ton oontaots^. The frequenoies
oFsome'of'the more active Southern S^^ions using 6 & 2 Metres are:-
VKYZAiI 50*04 & 144. ^8 VK7MY 50. 88 & 144. 27
VK7^K 50. 9 & 144. 018 VK7^0/Q 50*08 &_ 144. 14. AllMo/s.
Other stationa are all "below 51-Mo/s and 145 Mc/s. ^ _ ^•'
VK7MY should now have new modula-t ion transformer in. servioe, -fchis sfiould
give improved resul-bs for -the VK7WI rebroadoas-fcs.
VK7ZAQ has new modulator working, hopes to increase power on 2 mx.
VK7Z.M has plans for a new -tower & beams for 2 mx. VK72AV now has a 10 el.
bea-m-on 2/I-fc is believed -bha-b VK7EJ in'fcends operating on 2.
Don't forge-fc the Fox-Hunt. & make use of the V. H. F. band; a super-
regen and 3 el. beam don*!; -take muoh building.
(Signer) R. . Emmett VK7^0.
FOXHUNT.
A Fox-Hunt will be held on the night of Tuesday, April 18th. ^The frequeno-
Tes~used"will tie 144 and 3. 5 Mo/s "bands. I have no_speoifio^frequenoies.
Weather permitting, 'I undersir&nd^hat ^barb^uf,wiu_bl^ld ^!r^h^^
"
F^USs ^eerrun"^ ea^h-or;"fe. iling^his , ^af ^o^expirati^^a,a^^in
^eTim^:"Throharre ^er"v^le^ll"be^o/-^pr^^^
Club Room'Building Fund'. SO SVEEYBODY, roll along and^be in the^fun,
you~don'"t possessu any B. F. gear for ^hiese bands and have no-b
The Mo'n'th.ly Bulletin of The Wireless Instl-fcu-be of Aus-fcrAlia,
"Tasnaaian. Bivision.. Page 2.
ocns-fcruG-fc any, then you oan -fcetg atong with s.ome one v/ho has this gear
a.nd join in the fun. HELP MKE IT A SUCCESS.'
• . '"'.liil.e. .on this subjeo-fc, i-fc is' hoped "bha-b shor-fcly -bhe V. H. F.. Ko-bes w-ill be
transmit;-be d on -the 50 Mc/s ban'd by one of the V. H. P. Group and -this
transmission will be relayed on 7 Mo/s. by VKTm. Jack, VK7JB has, I
believe, oomple-bed a 50 Mo/s c-onTerter and providing -fcha-t; -bhe F. M.G. Dep-fc.
agrees.,, this service -bo -fche V. H. F. enthusiasts will be inaugurated. ...-••..
shortly. Lis'ben to VKWI for final details.
A. 0.0. P. SXAMIKATIOITS,'
. , . As a result ^ of the large numbers of candidates for Operators Certif-
ioa-fces, of pr. ofis&'opoyyi-b has been found necessary -bo change -bhe da-tes on
^,?hichthes e are" h& Id/ . . .
Comtnenoing in July 1961, the A. O. C. P. examiKa-fcion will be held
on the third Tuesday in the months, of January, April, July and Ootober»
The closing da-t?e for applioa-fcions is the 22nd. day of the mon^h
preceding -fcha-fc in which the examina-fcion is t;o be held. KE33P THIS. IN MIND
so -bha-fc you will know what -time you have. go-fc up your. sleeve if you are
intending •to ·ba.ke this exatainatioii, or knoiv some one'who is desirous of
"doing so,
ANNUALSUBSCRIPTIONS.
~THESTjT-ER^-TTOr;'.r OVERDUE. If YOU are among -the tardy ones,
.
you. had be-fcter do some-thing ab out; i-fc, and IWI. In order -fco save pos-fcage
reoeip-fcs for Subscrip-fcions vifill not; in future be sent; -fco Members unless a
reoeip-fc is speoifioall^ required. IF you require a receipt, please send
a stamped, addressed envelope with your reni-fc-banoe. Reoeip-fcs will be made
ou-t for ^LL Subsorip-fcions received and Call Signs and names will be pub. -.
lished in the Bulletin each mbn-bh for Subsoriptions reoeived. This is not;
in order to poin-b •the bone a-b the nan-payerSj "but; to le-fc -the payers now
•that -their Sub, has been received O. K'.
Subs to date. VK7JO. VK7ZZ W7R!,;I. VK7GA VK7RT VIC7^'i.E . VK7DC
TCTTR—VK'/'Ky VK7CT VK7ZAS VI'[7GV VK7AG VK7^AO VIC7CL/VK7LL VK7AI
VK7AX VK7GC VIC7KH . VK7^Q VK7Iui. ;K. L. TBhbeldon. C. G. Wald. on.
H. Hisou-fc-t;, ' R. S-fcranz. : K. Hopper., N. Fisher. D. Berry. G. P. Sharp.
•'?. G<, Jeff ery. P. Agnew. E. Bcyis. P. Defaholtn. G. Root.
This Lis-b is ma de up to March 16-fch. 1961.
ANOTHER FORM IN GAS":; YOU THRW THE IAST ONE AWAY
Natne VKS
Assooiate
P s-fcal Address
Enclosed is < . ... «. for -fche sum of £.
being my Annual Subscrip-bion for the year 1961-62
Full oi-fcy. £2-0^0 Full Country., £1-15-0
Associate Ci-by, fil-15-. O Associate Coun-try £1-10-0
Exchange is no-b neoess&ry', on Ins'fci-fcu'fce cheques. Money orders or Pos-tal
Wo-bes should be made payable -bo W. I.A. at; G. P. O. Hobar-b.
" GUIDE TO AMTEUR RADIO" .
This R. S.'5. B. Publication will be availa'ble through-this Division
at ^/- per copy post free. It .would be especially useful for -fchase inter-
este'd in the A'. O. C. P. and to those who have rsoently passed -fcheir exam.
and wish to ge-fc started on -the air. Council can thoroughly recommend a
copy -to you and if you wish one reserved and sent on -to ypu^ please
notify the Seore-b&ry, (a-b the same -bime ena losing -the 5/-) and it will
be sen-b on to when s-fcooks arrive.
MaiLBEBS HI F BADGES . . .. .,
Existing stocks of badges are exhaus-fced, 'but -fche^new mina. ture
onos are on order and will be available shor-tly. Prioe of these is no-b a-b
•the moment'.. known "but you will'be advised of this later when stoaks come
to hand.
The LIon-fchly Bulletin oi" The Wir less Ins-bi-tu-bo of Australia
Tsamanian Division. Pa^e 5
POST OFF'ICE BOX NUlfflER. •. ; .
Unfor'tuna-bely, owing to an Address published in "Radio & Hobbies,
•there s-bill seems some doubt about -the correct address for this Division*
It is STILL BOX 851J. G. P. O. HOBART for ALL corres. pondenoe EXCEPT QSL
Bureau. Feoeral. Contes-fc Conimi-fctee is STILl—BOX 8filJ. G. P. O, Hobar-b*
If at; any time -t-here- is any. ohange, which same is not envisaged, you.
will be notified via this Bulletin. A letter has been written -bo R & H
Editor so tha-t; I hope this query will no-fc in fu-fcure again arise.
ANNUAL GENERAL MEETING AND DINNER.
This event was"he Id last; night and was a great suooess, both
from -fche point of view of L'Jembers from various Zones and more pr less
outlyi'ng areas and aslo from the Dinner and soo.ial ac-bivity mde the
more enjoyable by having -t'he Ladies present. A oer-fcain amoun't; of hilari-fcy
was caused on odd ooassions because of -the fac-b •fch'a-b anyone .oaugh-fc talking
about radio and/or allied subjects was fined a bob so qui-be a few shillings
WBce oolleo-fced for -che Clu'b Rootn Fund, 32 votes only were Bast for the
eledtion of your Counoil for -bhe ensuing year
The Officer s- for the Division for the year are as follows:-
PATRON. Mr. L. Crooks. VK7BQ.
QSL MAMGEE. Mr, J. Batohler. VK7JB.
TRAFFIC OFFICER. Kr. R. D. O'I&y VK70M.
BROADCAST OFFICER. Mr. J. Ba-bchler. VK7JB.
Asst. B'CAST OFFICER. Mr. K. Spiegal. VK7KS.
HON. SOLICITOR. Mr. I. Kic ho Is. VK7ZZ..:
AUDITORS. №. L. Jens en* • VK7LJ.
Mr. G. .Richardson. VK7GR.
LIBRARIAN. Mr. D. ''A''a'fcsoa. VK7DW.
LECTURE OBG-AMZER. Mr. L. Edwards. VK7.LB.
NOIS E LIAISON OFFICER?' Mr. L.. Jens en. VK7LJ.
V. H. F. OFFI6ER. Mr. A. Morrisby. VK7MY.
DIV. OOERESONDSNT. Kr. I. Nichols VK72Z.
DISPOSAL CO^JITTEE Mr. K. Millin. VKTK.^.
Mr. C. Earrisson. 7K7CH.
Mr. E Cruise. VK.7EJ.
COUNCIL.
Mr. T Alien. VK7AL.
Mr.. D',. Wa-fcson* VK7DW.
№. c. Harris s on VK8CH.
Mr. K. Millin. VK7KA
Mr. L. Edwards• VK7LE.
Mr. A. Morris by. w.7m.
•Mr. I. ~SSi a ho Is • VK7ZZ.
Federal CounoilLor. Mt. I. Niohols. VK7ZZ
.
The PRBSID3NT? VICB^PRESIDEI'TTS? SECRETARY and TREASURER-will be eleo-bed
"by Counoil, .and .-the result will be advised later.
ANNUAL REPORT. 1960-6.1.
Gentlemen. . , ;..., _ „. „ ,. _ •
It is indeed an honor And a pr.iviledge for me, as yo.ur
President, to presen-fc to you -this report -for the year jus-fc a-losed. .
The Ins-b'tu-be has aon-binued .-bo prosper in all its endeavours
an d 'now. has a Club 'Room C.'otnmi-h-bee working whose aim it is -to rai-se funds -fco.
'thTlns-fcitute with Us. own premises. Our finances are sound as the . ^ ^ .^
Financial Statement shows and wi-bh the new. arrangement reoen-bly oomple-bed
:'Poste-l-DepartmeD-fc should show an even more favourable balance-in №e future,
General Meetings have 'been well attended and Leo-fcures, ably.
arranged. by. Mr. L, Edwards, TO7LE? have always^provided subjects o^ keen^ln^efe^
t'o'th^se attending. Your Council attended to the routine inatters of the Institute
a-fc meetings held at each Council Member's home in -burn during the year*
Membership.
At the close of the year the Institute streng-fch.was
Full Members. 97. Student Members 2
Assooiate Members. 62 Life Members. 6
Total 168.
Honorary Members
The Monthly Bulletin of The '"Tireless Ins-bi-fcu-fce of Aus'fcralia.
Tasmanian Division. Page 4.
(Annual Repor'fe Cont'd).
:During.. t;he year -there were quite a number of Full nad Assooia-fce Memb.ers
eleo-fced an4 s.v'ndry . unfinanoial Mem'b'e]:<s v^ere removed from our books, -Dr» K, Mo-
Craoken, ex VI{7M, was again eleGted"a-n"'Honorary Member for the year,
A+;hol Johns on Lfemorial-Trophy. ^
This was won in the Contes-fc las-b year by Mr B Watson, VK7^K, and
will be presented a little later,
V. H. F. Group,
During the year further a-ttemp-bs have been-made -bo increase the
in-fceresl:;'in'V.H. F. and ivith -the oonsis-fcen'bly increasing number of liiiffim'ted Lioenoees
-bhe Group is. looking forward to a very suocessful year in 1961. Arrangemen-bs have
been comple'ted for -the re-broadoas-b of the Group notes on 50 and 144 Mo/s..
North and Nor-fch-Wes-fc 2,ones.
These tizvo Zones have con-binued-bo hold -their regular. Mon-fch^ Meetings
and qui-te a few of their Members have succeeded in ob-baining -bheir A. O. C. P. or
L. A. O. C. P. Of -the -two Zones the ITor-fch-V. ''es-fc appears -bo be by far the mos-fc aot. ive
and are -ho be congra-tula-bed on •bhis ao'fcivi'ty,
S-b. John Ambulance.
The usual shift work con-fcinues for this Association and -the Members ooncer.
ned are to oongra-fcula-fced for the work they are doing. Two new Con-brol Boards have
been built by the Ins-ti-fcu-be during the year, more will be oons-hruo-fced as required.
Retnembraiioee Bay Contest.
Our Division v?as again suacessfytl . in -bhis Contes-t; -this Year. However
our part; icipa-fc ion factor of SQfo was much lovjer •fcha. n frha-t of las •fc. year. bu-b fortu-
nately our top six average was oonsidera'bly higher at 781 poin'bs • Our appreciation
is hereby expressed to all -those who par-tioipated.
Scou-b Jara^oree-on-'the-airy
Muoh more local and world publicity was apparently given, -fc.o. this e
even-b this year and a larger number of S opu-bs, availed -bhems elves of the facilities
provided. L'lany overseas and in-bers-bate cpn'fcac'ts v^ere made and greetings exchanged*
Q. S. L. Bureau.
During -the year the QSL L'ian&.ger, LIr. J. Batchler, VK7JB, handled
2, 668 inwards and 5, 156 outwards oards, considerably less -fchan last; year. Jack
is -to be oongra-bula-bed on. -bhe able handling, of this.-fcine-oonsuming job.
Royal Hobar-t feega-fcte.
:, . As in previous years. Members of the Instity-fc. e assisted by providing
radio oomniunica-bion at •fche Royal Hohar-b Regat.-fca on-Feb.. ll'fch. and ;14-bh. , 1961.
Federal Contest Committee. ..
This Commit tee, formed from Members of this. Division under •the
Con-bes-b I/'ianager, 1'ir. L. Jensen, VK7LJ, has continued -bhe -fcask of arranging Con-fcests
and checking results. In this la-bter part of its work, the Comrai-btee has been
ably assisted by volunteers whose help is much apprecia-ted.
In o'onoluding this repor-fc, ; I would like. .-bo express appreoiation of
the valuable work do'ne in' -bhe produc-fcion of -fche Bullet;i. n by Ifir* T. Moore, VK7BI, .
who has assisted grea'tly in -the dupli. oation of same, and ±o №. J. Brown, VK7BJ:,.
and oup-. 'Secr.e'tary. №. I';:.. Millin',. VK7Iu\». ..•;, :...,•..
. • . • -^. o'-the. Treasurer, •Mr. C .. Harrisson?, VK7GH, to •bhe r e-fciring Federal '
Councillor llr. E. Cruise VK7EJ, and the Council Members who so ably helped the
Division-along during -the year,- to i-bhose Members who so willingly performed the
more'tne'nta.l tasks suoh as preparing .supper, oleaning ••fch. e Club Rooin and o-ther . tasks
•bo w-Hi'c'h .'there is • no glamour, I -expre ss my dee. p gra-fcitiude and -bhanks.
To -bhe inooming Counoil and Officers, I take -bhis opportuni-by of
wishing them every suacess a nd -trust that they will con-fcinue -to receive the. full
support; and oo-opera-bion of -all Members.
(Signed)
T. A., Alien. VK7AL,
PRESID5JT.
The Mon-bhly Bulletin of the Wireless Insti-fcut-e of Australia*
Tasmanian Division. Pa ge 5.
RECEIPTo .AN. J EXPE№)ITURE_, ~ YEA.R EI^ED" •28' 61"
•GENERAL AOGOUNT
Recetp'bs i&pendi'fcure,
Subscrip-bions £229-10- Ren-b £66- s-
Subscrip-bions to Bulletin 47- S" "Ama'beur Radio" 132-10-
Donations 18- ;- Petty Gash & Pos-b.ages . 52- 6-lOd
Rent •34- 7- 6d Light & Power 4-10-
Badges ........ ^ ^ Gall Books 13- 1-
Log Books . 18- Stationery '2-14- $d
CaU. Books U- 8- Sub .3. to I'b. gazines 5-15-
B ank In-fceres'b 4- 9- Honorarium Secretary 7- 7-
Sundiy 1-11- 6d Gonven-bion Expenses 16-18-. 4d
Honour Board 28- 2- 6d
Annual Meeting expenses 5~ :- :
. Per Capi-bas 15-10- ;
Club House Fund 20- ;- :
Post Office Box 6- ;- :
Sundiy 7- 7- 6d
£34.9-14- i £383- 2- 7d
Balance 1/3/60 35- 5- 4d Balance 2S/2/61 51-16- 9d
£434"19- 4d £434-19- IA
E! UIH^ENT ACCOUNT
Sales £137- ;-.: Purchases £10- 5- ;
Gomniission 2- 5- 6d Refunds -bo mera'bers 2- ;- :
Bank Interest, .
3-17- ', Sundry 15-
Sundry . '' .
6- 6d
£14-3- 9" ; £13- ;- :
Ovri.ng Hienibers 1/3/60 3-16- ; OT.-ri.ng members 23/2/61
VK7BI 10/-. .
VK7LD £1 -.
VK7SF . 6/-
TO7SM £1-15/- 3-11- :
Balance 1/3/60 54.- 9- 3d Balance 2^/2/61 185- 3- 3d
£201"14~ 8d £201-14- 8d
CLUB HOUSE FUJ^
Transfer Club Funds £20-':-
Donations 17-12-. . 6d
Raffle '4-10-
Field Days 14- s-
Auction 35- 2-
Social Evening 1-17-
Aiivertisement Bulletin i
Gabare-b EY.enJ-n? 1- ?.
£95- 1- 6d
Bs. lance 28/2/61 £95- 1- 6d
£95- 1- 6d £95- 1- 6d
C. Harrisson. VK7GH
Audited, and found correct Hon, Treasurer
L. R. Jeensen VK7LJ Hon, Auditor s
G. H. Ricliardson VK7GR
The Monthly Bulletin of The Wireless Irastitu-fce of Aus-fcralia
Tasnania-n Divis'ion. Page 6.
TECHNICAL. TVI Hi h Pass, Filter,
This filter* is designed -bo be inserted in the 500 ohm -fcwin lead -bo -the
receiver, its purpose being to prevent overload of the receiver by •the final stage
of your transmi. 'tter. The filter will pass ati'frequencies above 44 Mo/s but will
not pass those below it. Therefore, i-b will not help those working on bands above
50 Mo/s » .nor -fchose whos are radiating harmonios in •fche TV Channel,
Circuit;.
^
T- 12 pf. Ceramic.
^
L. 1. 08 . uH,
i
It • is a bs. lanced high pass oostan'b K fil'ter wi-bh a out-off frequency of
44-Mo/s and an impedance of 300 ohms
CONSTRUCTION.
~~The Fil-ber is mouri-fced on a piece of insulating board 1/16" -bhiok and
1" x I2-" in size. Drill 5 holes as shoivn and moun-fc soldering lugs in the 4 corners.
Use of round head bolts aasid nuts is preferable. Fit one in the oen-bre hole as well.
The ooraponents are mounted, as shown, the soldering being done of -bhe bolt heads.
C01IS.
These are made as follows;-
Take. a. 15" lengiih of 50g. enamel insula-bed'wire (B & S) and fold it doulble.
Clean off about 1" of •the fold, -fchen -tin i-b, Kext_bend -the retnaining ends a't
right angles and cu-b to the leng'fchs shcnvn. Glean ^-" of .'the end of each vfire and
•bin them. Then. starting from the oen-fcre and v. orking outwards wind the ooils close
v/ound on a -^-' diameter rod, making sure that both halves of the wire are wound in
the same direction. Next bend the ^" ends of -bhe wire at rig'h'fc angles and •trim the
1" center tap lead so that i-fc will jus-b reach -the oen-bre bol-fc. Then solder the
ooils in plaoe. The whole suooess of -the filter will depend on the care with whioh
the soils are "construo-fced.
USE*
The filter should be attaahed right at; the -fcerminals of the se-fc. I'b may or
may not be necessary -bo use -the ear-fch conneo-bion, bu-t if i't is make as SHORT a
oonneo-fcion as possible to the rsoeiver ohassis*
•^
-i I—. -?'
<t" ^
^
^..._^1, . -^ . / ".^ pp.
Not -fco^cale.
^—^—1
Full Size.
If you are radiating harmonics -bhe an aa-benna coupler will work
wonders
G-uess that; is the lot for -this monti h.
K. S. Millin.
Hon. Secretary,