SKM C450i24093016101
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Z-HF.,,, W/,.e£!-... £SS:, ::^NS,,I/,ryZ£-
O. E...... A.U.. STBALIA -
TASMANIA^ D I VI S-l N
BOX 851 J. G. P. Go. H OBA.RT ,
•FEBRUARI 1963 №№mZ_H. TI..LETIN, Price 6d
President T'-e.'i_0iirc;x" Secreta
Mr. T. Alien -VK7AL K-.',C. Harrisson 'VK7GH Mr, K.№. Uin VK7KA
Registered a-fc G. PaO,, I-Iobai-b,. for teansiaissipn fciy post as a periodica&«
&E]ffiRAL_№ETINCr,
The next [email address removed] ,. 1. Meeting of tl-ie Di'vision' m. ll be held in the Club .Room,
147 Liverpool S-fc,,,, Hobart, on VJEDl'SSDAY, 6th Februaiy 1963 g-fc' 2000 hours, The-
lec-burer for -fche everJ-ng TAII be№. -John IIacey VK7ZOO and his. subject : "Pulse-
Mo clid,ation for the Amateur, or FIov •bo Get 10 Kilo^a-o-bs from an 807".
NOBTHERN ZOME. •'••• ••
The ne3cb_mee-fcing of the Nisr-bhern Zone vd. ll be held at 73 ..George Street,
Laimcestony on FRIDAY, 8-bh February at 2COO hours. There will be a tape recording
ob-bained from -fche N. S. W. Dii'lsiony of a t.^lk 'by Bob Wilson on "Linear Amplifiers'1""
with t7 slides, end"r;Iiould be 'vciy interesting »
^ A picnic-wLll be held'-'at Greeng 'Bea'ch''on SITNDM, ' 17th Februaiy- for monbers,
their families^'alid-r;f-&iends<; Ma.ke a no-be-of'-bhe date and have a day at the. 'beach,
Listen'. t'o VKWJI •broadoas-bs for- further infoma-fcioiie
ITORTH ,:E.qTEBN ZOI\TE. •. '. . -.
Little has besn heard from thzs Zone recQn-fcly, but g s far as VQ'know-fche
next
re sting yi'1-l'be hetd a-b Larkins Hall, -Ulvers-fcone^ on TUESDAZ, 4.th Februaiy
at 2000 hours,,
GOUNGIL^M^SECING,
• MDNDJB:^ 18th Febr^a. ^-• at the resi.dencs of Mro L. Ed^rards "VK:7LE, Musgrove.
St. y Lindigfame^ at 2000 how.-Qo • ' ' - '
N'. A T I-O'N-A L FIE L D DAY,
SATUBDAZ, 9th February 1800 to 2j00 hrs p- SLTJ. :.:C.Z, 10th Febniaiy
1000 hoT^s to l6'00 hours EAST
There has been a considerable increase in porbable/mobile activi.-by in
W7 recently, and -there is no'reason -why the Division should not be
well represen'fcod this year, so let's make a special effort to get as
mary on -the air as possible, You" can be poirfcable/mobUe anywhere
outside a one. nn.ie 'radius' of y" our honioo If you cannot get on all.
•the'time, i.rhy no-b't. ake •fche fariily'for a pxcnic on the Sunday and
combine a day ou-b i.ri.-bh s. day on the air, In-fcrastate ·world.ng xs
pamu'. tted^ and if bo-G'ween portable s'fcations coun-fcs 10 points as
against 2"'for con-bacts i;:Lth fixed s'ba-bions. Your coopera'bion can
help other-contest-ant. l.j 'SO BE'IN IT. . 'And don't neglect 3»5 fflc/s
during -the day, m-. ny zisoful pbin-fcg ha^T-s been-scored -fchere around
midday in previous .years o. Also 'remember -bhat a lo-b of portable
sb a'fcions are czyst. al cori.-brolLed, ;) so make a point of listening off
youf own frequencyc And don't neglec-b to send in a Img hovovor
_.,... . f@w-S^!^a<t's you hQve, FaL3. 'de-bails "Ania-fceur R^diQ)' January p. 17.
Liii'fMIT^^I^^Effll^^
Mr., Len Edwards, our Lectur.e Organisep, woT-ild welcome any sugges'fcioms
regarding subjects for lectures. If yoii -i-iculd like any special subject- let
Len know and he TOJ.I do his 'bs.s'fc •bo orgar-issi i-fc.
- Page 1
The Wireless Iris'Si't'u-be of Au.stralia, Tasmani'an DiTlsion
. February 1963 Montlily Bull^-b'in . : ;;.. Page3...
ATHOL -UOHNSTON I'ffiMOKEAL GOKiTEST (by VK7ZAE)
The Athol Johns-bon Meiaorial GonliBS-b will bo held from 0001. hozu's on -the
23rd Februaiy' to 2359 hours 24-bh Februaiy 1963,, to perpetuate the menoiy'of one Of
VK7s ^..H. F. enthusiasts, A-fchol Johns-fcon, and to Gncom-c-age V. H. F. activi-ty,
particularly raobils and porfcablo.
The Gon-best ruLi.os are as follows !
1, Soctions, (a) Transniit-fcing (Telephony only)
(b) Recei-vinga
An operator may en-fcer both sections, but ho must sutait •bwo SGpera'fce logs,
Points claimed in eaeh secti ion ifri. il be counted, as 'bT.w separate entries*
2. Th6 con-fces-b \d-ll be for in-fcrast-ate con-bac-bs only, any -ro. si-bor •bo 'VK7 will be
vrelcome to -bake paifb if -fchey iri.sh o
3. .. All bands above and including the 50 mc/s band may be used. Gross band con-bacts
are Invalido Skods nay -bo arrangod for any 'band,
4., All-"'•entrant's i/ri,ll opera'be wL-fchin thG terms of their licence and obssrvs all
regula-fcions Isid d. oi'.'n b:/- -bhe P., M. Go DeFartoG n-fca
5o Defj. nit^.ons; The terras usod belo'w are defined as follows :
"(aT'Hora'o St. a-bion" A s-bation operating fron the licencee's home QTH.
(b) Portable S-fca'. -i.on» A s-ba-bion operating a EU.IG or inore, as the crow fli.es,
fron •fche licensee's hone QTHc
6o Scoring. One poin-b per mile, aQasursd over the shor-bes'fc distance be'fcweQii •the: •byQ
s-batioEs, poin/fcs claiE-ied on the nearesb whole aile, A hone s-ba-bion mul. tiplies •fche
score so obtqined "fciy one (l) and a portable s'fcstion by •bvo (2),
7«eTo quality for -bvo or nore con-fcac-bs per hand vriL-bh sane stat'ion, one of the
follox-ri.ng i-ules nuist bo or-served s
(&) Change to ano'fchor bandff
(b) In "the cage of -fcvo fixed stat-ions a six hour period oust. elapse be-b^eti
con-bac-tso
^'(c;-) 'One or h3th s-ba-bions •bo move to, or outsids, a 5 aile. radius from . -bhe
position of any previous contact*. •__. __..
8a Stations v±ll exchange r'eporfcs and map referonces Ty giving readibili'by, signal
streng-fch and a 6; figare. nap reforence, e«g» for a. possi'ble contact from Mbun-fc .
Wellington, 59511719o • •
9o Maps, -bo be'u. sedo Lands and Survey, scale TI' -to -the niile. The st. ation \&11 giva
Fts location Ty grid referonco and it is -bhe responsibili'ty of •the operator -bo
give the correct, reference., Opera-bors need only. purchasG -bhe map of the ar<%.
in which he tri.il be opera bingo He nust enter -bhG nap no, in his log,
10» Logs, Standard confes-b log shee-bs are -to be used., refeF -bo PQS'fc_issuesof A«R»
i^~-bypical foraa-bSa Logs are -bo be in the hands of №e G. D'Eaden W7Z&S ly
2000 hours on tho SOth-I.Iarch 1963 o
11, ATOrd. So The w-nner of the -bransiniiting section vi.il. hold -fchG Perpetual Troply_
:un-bU-The' resu3. t of -fche nexb Con-besli is declaredo .. The ui.rmer of each. section will
receive a Gertificatoo
The Troply shaU r-ff-^in -the property of -fche W. I. A. Tasmanian Di-cision and
shall be re-buxm. ed to -bhe Ins-bi-bu-be if -bho Gon-best lapses^ "
FOR SALE., ___ __ ^ . .
Se-b 3 Aogis max, seloc-bivity 455 kc IFT. ^ Two J22 one J23* Brand nev 30/-
Portable' TX ffiC coaptisin. g 6G;4 xfcal osciarLafcor -bo 6BW6. final, mo.dulator^ carbon nikG
with press to talk'swL-fcch, 12AT7 spsoch ecipe, 6BW6 Heising aodula-fcor. re ceiver
6AN7 inixer, tw 1.2BA6 1-7 Lip,, 12AV6 aiidio'anp., 6M45 ou-fcpu-fc, •noi-se linater^-
"S" rae-bor, ne-b-y. rg s-'d. tch, fx'eqizency covorago approx, 3*0 to 8 mc/s, №. 11 1c
into any arAoina, 'A-bh variable tapping on final tank. Housed incase rL" x 10" x
6". Genemo-bor powr supply for opera-bion froia. 12 V. battery.... £L9« '•
Gontac:b Jim Oliver YK.7.TO., 73 Noraans'bone Rd.., Laun&es-fcon,
Sounds the goods for anyone wan-fcing -bo have a go in; -the National Field. Day*
STR&I8. -- _ . . . .. . .,.
Mr, Bryan E^rre ??.v7Z3E hgs left for An-fcarc-bica and hopes -bo be on the ail; ^,
during liis 12 months s-bny^'clo^jn. there and ^11 be signing VK^BE» Keepiian ear open
for him,,
VIC3ASZ, -bhe Offici.sl S-fca-fcion of th e S. W. Zone, Victori. an Division,
conducts slov morse prac'cice on 3550 kc/s every Sunday, Tuesday and Friday at
2030 hours, and is 'being receivQd very vrell here.
One of'"fche 'biggos-b 1y'K7 ro-und -bablG QSOs on record nus-b surely have been
the one -that took place "on 7040 kc/s on 30/12/62,, S-fca-fcions in the hook up were
VK7CT,. VK75V, -VK7KA/MM, YK70^' ^TDK/7, W7JB, VK'/KS, VIC7DS, VK7JO, ^KTMZ and
•VK7CI^MM< A'noc-b interesting (^Oo
;^ATIO!IAL F'iELD DAY. FEBRUART 9th and lOthe
The Wireless Ins-bitv.-b.e pf .Australia, Tasraanian Division
February 1963 Mon-bhly Bulle-fcin Page.4
p'pnmiq ' . .. , .. .
; Don*:b forget -bacQiupletQ the noise repor'fc^fo™ includsd in^lQS-b^mon-bh's
Bulletin''and"fo. rviar(ii.t..-&o,.№;. E.. Beard VK7EB, 14.8 Derwent. Ave., Lindisfanio^
before 28th Februaiy, The inore reporfcs received the better ^ chance ve^Mve'.c
getting gone a c-bion in cleaning up some _af the Powrlealcs thatS9em'bo_be
wriying most everyone. I hear that VK7ZAI lias built up some VHF ec
•to -track down these noises and w.11 be glad to help,
SUBSGKIKEIONS. ;'. - ':; .. -..„-
.
-. '.A; reciindier. tha-fc subscriptions- are due and payable on 1st March next,
We're giving you plenty of notice -this year_so thatyou can s-bart sa"vlng^n0^*^,
in'f'heupasl"it-h9g cost-the Division several pounds each year for "Amatew
'for those who fail to renew. . 1^ probably know aether you are_going to pay-at
a la-ber date, ' but we don't, so STfu-bure aryone_s-bill unfinancial as a"b ls"fc
Inril -will be removed from -bhe "Anatezir Radio" Gircula-tion Lis-fc until their^
s^cription is received.. This wirL probably nean mxssing sevex>al isfues*, ^In „
addition. iit makes unnecessary wrk for all concerned. Your cooperation in.
paying pt-ompUy •fchi. s'.year w.uld be mych appreciated,
^-TECIINIGAL. ' . ' • ^'- • •• . : ••
Su .es-bedTran&is'borised:DG-DQ: Converter for 128 Se-bs,
"This push-pull cxrcuit-w.th its ·hi.gh efficiency^and good regulation sl
find appii^a-bion^in saall portable . rigs" such as -the 128, etc. The^consrerber ^ ^ ^
uses the^recen-bly introduced e-AG128''matched audio transistors* Starfcing and
drive'condi-bions" for the transistors are controlled Ty the voltage^divider,.
El, R4«T-ransfomer -uindihg.. details are gi.ven in -the Table, ^ and. R3 aEe,
included to allow for characteristic spread of -fcransis-bors. Ou-fcpu.-fc appro'xijna-t
170 volts' a-fc S5 ina/ ' The •bransfomer is cons-bructeii with all winding& .iround on
,
-fche centre leg'of the ferrL-be "E" core. The windings should be insulated with
•. 005" paper, and, in-fcho case of the primary' should be. bifilar wound -to ^minimise
•bratlsieni: .voltages. The cores should be f-i firialy claaped together and no .air
_____ _ ',.' gap is necessary,
2-ft Cl^ ^3
\,.: R'5'
No. of Enamel
llinding Turns Copper WLTO
N1. 58 25 B & S
N2 58 25 B& S .
31 100 olm/ Tl Ferroxcube ferrite N3 12 30-B & S
B2. ^3 220 ohm , "E" Gore (56907. 13/3A) N^. 12 30 3 &S
B4. 4. 7. K ohm -^. Ferroxcube ferii-fce N5 500 34 B & S
Gi 40 uf., 16 vw« "•I" Gore (56010. 33/3A).
02 1 uf 125V
G3, ^ 16 uf. 300v.
Dl, 2... QA210 . . ,
R5 100k ohn.,. ....
(Adapted from an article in "Mini va.Wl Diges-b, Oc-bobor 1962)
73 , ;'
Cha s. Harris son 'VK7GH
for Bulletin Commi-bteo
.
The Wireless Institu-fce of Australia, Tasraanian Division,
February 1963 Monthly Bulletin Page 5
DISPOSALS.
Available to financial meabers on the usual conditions* Appliiioations on
tihe attached fona to e-fcher •with reini-fctance (unless you have a credi-fc balance) •bo
Disposals Gommi-fc-bee 'by Februa 18th. Items can. be inspected at the nexfc meeting,
As most is •boo heavyn'fco conveniently post, it would be appreciated if ca'un'bry orders
could be collected when soneone comes to Hobart,
I-fcem__No. » Descri tion Price
B3 A further supply of these popnlar 122 -transformers has been received
and we offer the set of three, new in sealed boxes, for •••••• •25s/-
Or separately
B31 ZM0616 I4iorophone -branny ...................... 5s/-
B32 ZAAD615 Driver transfonaer s, e, prii3aiy,p«p. secondary for grids of
6N7 plus low impedance secondary- for headphones ••«•••••••• 7s/6d
B33 ZAA0617 Ifcdula-fcion -bran-ny 6N7 Glass B modula-bors -bo 807 P»A.. . « • • £1,
01" BFO Coils 455 kc/s for 122. New....... ............ 3s/-
02 we have been fortunate in get-fciiig a quantity of commercial •vibrators
heavy duty, 9 pin, 100 waU synchronous, 12 volt, and also commercial
•vibrator transformers, 12/24V« heavy duty, 100 •wa'fc'fc raulti-tap secondaiy7,
UC" Core, ond some 100 ma filter chokes. This is beautiful s-fci-gf
currently used in coraaercial gear. ALL BRAND NEW. Kit consisting of :
(a) Vibrator transfomer 90-177 (See ••tapped about 200-400V)
^b) 2 heavy duty vi'brat'ors (one for a spare)
,c) 9 pin socket
(d) io^raa fil-ber choke. ................. The lot £2-5s/~
03 770170 Vibrator -fcransfomers 6/12 vol-b ("G" cores) believed sui-babls
for -fcransis-fcor power supply uindings* Secondary raul-bi-tapped about
200-400v« Similar to 90-177 but lighter duty &<ansL aev ••, »»., 7s/6d
04 V5211 6v, synschonous vibrators* New, bsxed • • , ••••••••• •6s/-
NOMINATION FORM - COUNCIL
We, the undersigned, bring Full Members of the Wireless Ins'fcitute of
Australia, Tagmanian Division, hereby nominate Mr.
for the position of Divisional CoT.u-icillor for the yea"r"~1963/64»
Proposed ty__l ___________ Seconded 1y
I agree to accept the above nomina-fcion and, if elected, to act in "bhe
above capacity,
Date _„___- (Signature)
DISPOSALS. 2/63
The Secretary,
Disposals Coainit-teo,
Wireless Institute of Australia,
Box 851 J, G. P. O.
Hobarb.
Item No Items a cd for Quantity Gos'fc
Gash/Cheque/M. O. /P. N. for £ . . . . _ enclosed.
I certify that these items are for ray o-wn use and not for resale,
Address Name
-V