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BULLETIN ISSUED BY THE NORTHERN ZONES OF THE P,0, BOX 17
WIRELESS INSTITUTE OF AUSTRALIA TASMANIAT DIVISION ' LAUN CES?
TAS, 7i-i
AUGUST
VOL. 1 NO, 4
REGISTERED AT G,P,0, HOBART
fer transmissicn by pest as
a Pericdical, CATEGORY B, - . PRICE 5¢,
PAGE 1
EXPERTMENTER, OPERATOR cr CONSTRUCTOR., - That is the Questicnl
I was terpted to let the Title be the editcrial, for in itself it poses
a nurber of cuesticns that have a variety cf valid answers
I suggest there is a useful place fer all threc types cf Radic Ameteur
(and the perrutations thercefi)
Our cqualificaticn is celled the Anateur Operaters Certificate cf Prcficicney
cven thcugh the rt,:'ulutlcnsarc slanted tcwards Experirenters,
A geed cperater is a naticnal asset and being o geed cporator is deceptiv.”
difficult, It requircs geed procedure, articulate thln"lng and a lct of
practise, ‘
How nany real experirenters are there in cur renks, Very few in the
final ccunt, I gucss, and this avenue rcouires a concentrated "grind" to acquire
Oe—
2 scund kncwledge of 'basics', the nced for o new device cr circuit and the
ability, applicaticn and tenacity tc prcduce the end result - rare qualities!
The censtructer, building an alrecady developed piece of equipnent cut o
a magazine is gaining skill end applying knowledge, This process cf
application in itself makes the theery "stick® and calls fer thought, judgner
and appreciation of the preblems of attaining a nleasing eppcarance as well -.
zceod performence,
A really hard leck at we anatcurs as a group reveals an almost wniversal
sherteering, Most of us have the 'jargon! and can fluently discuss 'this and
that! using technical terms, but cleser examinaticn rcveels cnly a thin vencer
of rcal knecwledge and a sad lack of the real fcundation of electronic basic
theory, withcut which it is cxtremely difficult tc recascn or understand
the 'how and why' cf circuitry.
I guess in all this rarbling I've tricd to present twe things for
ecngsideration - an appreciation of the cther blcke for what he is, and
to arn cncself mththc 'tcels cf trade! of cur hebby i.e. a srund undcr-.
standing of basic knowlcdge,
73
TOM, 7PM,
COMING EVENTS
AUGUST 3rd NORTH WEST ATNUAL GENERAL MEETING, Lakirs Hall, Ulverstrn:,
LUGUST 13th VORTHERYAL\NAo
ZONEBt
MEETINGot Recn 10 Adult Educaticn Becard
Rrcms, | &R HIG
HIGHT“\EETZQLHUHCCStCI’l.
ATTATTOM a2 L3 MATINT AT AFTOTIMTRT A e . ATTNT AT AT
AUGUST
VOL. 1 NO. 4
oe
REGISTERED AT G,P.C, HCBART
fer transmissicn by pest as .
& Pericdical, CATEGORY B, : . PRICE 5¢,
PAGE 1
EXPERTMEN TER, OPERATCR cr CONSTRUCTOR. .. That is the Questicnl
I was termpted to let the Title be the editcrial, for in itself it poses
a nunber of cuesticns that have a variety cf valid answers,
I suggest there is a useful place fer all threc types cf Radic Amateur
(and the perrutations therecfl)
Our qualificaticn is celled the Anateur Operaters Certificate ¢f Preficicn ey
cven thcugh the re.oulutlcns arc slanted tocwards Experirenters,
A geed cperater is a naticnalasset and beinga geed cperater is deceptiv.®
difficult., It requires gred procedure, articulate 'thln‘{lng end a lct of
prectise, '
How nony real experirenters are there in cur renks, Very few in the
o
final ccunt, I gucss, end this avenue rcouires a concentrated "grind" te acquire
2 scund Jncwledge cf 'basics', the nced for a ncw device cr circuit and the
ability, applicaticn end tenacity tc prcduce the end result - rare qualities!
The ccnstructer, building an already developed piece of equipnent cut ¢
a magazine is gaining skill end applying knowledge, This process of
application in itself makes the theery Mstick" and calls fer thought, judgmer
and appreciation of the preblems of attaining a pleasing eppcarance as well -
gcod performence,
A really hard leck at we anateurs as a greup reveals an almeost wniversal
shorteeming, Most of us have the 'jargen! and can fluently discuss ‘'this end
that! using technical terms, but cleoser examinaticn reveels cnly a thin vencer
of rcal knewlecdge end a sad lack of the recal fcundation of electronic basic
theory, without which it is cxtremely difficult tc rcasen or wnderstend
the 'how and why' of circuitry. _
I guess in all this ranbling I've tricd to present tw things for
eccnsideration - an appreciaticn of the cther blckce for what he is, and
to arn cncself with the 'tcels cf trade! of cur hebby i.e. a scund under-
standing of basic kncwlcdge,
73
, THM,
COMING EVENTS
AUGUST 3ra NORTH WEST AVNUAL GRIERAL WEETING, Lokins Hall, Ulverstrm:,
LUGUST 13th NORTHERY ZONE MEETING ot Reen 10 Adult Educaticn Beard
Rrens H?fiHIGJ T*{EET,\ Launccsten,
AUGUST 14th ¢ COUNCIL MEETING in LAUNCESTON,
AUGUST 14th & 15th R,D. CCNTEST,
The Centest is nct finished wntil
ycu have sont ycur leg in!
VK7 ROUND UP EVERY WEDNESDAY 7.30pn ON 3670 HZ,
., R, M.
BULLETIN OF NCORTHERY ZONES W.Il. feeoso...AUGUST, 1971,
PAGE 2
The General nceting of the Nerthem Zone was held cn July 9th with a record
“tondance- of 35 members,
It was a plcasure te” sce scne old faces and new renbers which included Rex:
/3, Ron 7ZRO end Bob MT, ! :
Joec 7%2GJ. reported that 7EX (broadcast staticn)‘ has given the cld 500 watt
temsnitter to the zenc, It was suggested that rembers interested should rmcet
oTterwards tororganise for the rercwval o~f this vculomn‘t
Peter “7PF reported that cur rcpeater- apnlica2ticn has been rejected cdue to th
wsc of a D,CuA. fmquency as an altermate.mcthed of turning it off, Peter
:‘:.;;r-csted that we re-subrit-cur epplicaticn shewing the switch installed on the
Luilding and elsc change the repeater frequency te Ch, 1.
Pcter pointed out that the output frequency of Ch, 4 is idantical tc the
ot frequency of several satellliic awaiting launching,
It was refreshing tc sce abcut & hands rise when the chairman called for
w luntecrs to aid Reg 7KK and Kevin 7ZAH in reking arrangenents for this ycars
vofest, Present plans are. for a Hall, pessibly in the Evandale arca with
eals catered for, The date fer the Hamfest has been set for the last weekend
in FMovenber, .
Peter 7PF, .thc state's Australic Go-crdinator then gave a talk entitled
"'Th1t Yeu'll Nccc; for Australis" and derrnstrated an orbit plotting device
“ch he hopes to mass preduce,. The Chairman welcored the Couneil Members
v handed the meeting over te W.I.A. President Geoff 7ZAS, '
Mike 7ZMK informed the mecting of the.advantages of E.D,P. and circulated
varicus cards invclved,
The rceting closed at 10,15om and supner was served,
FRT TR HK
IR
WOULDI' 'T surprise me if Tin 7ZX bcecarme the Education Departrient'!s first
cctrenics Supcrintendent, He was busy dercnstrating a new Electrenics kit
. o grecup when a group of 'Tcp Brass! walked in, Real irpresscd they were,
oarently! -
¥ CH NI
B
WHY cdoes Brian 7RR persist in travelling tc Lawmcesten, He deesn't scen
t. ot the message, A wallaby tricd to resist hin on onc trip nct sc long age
This tine a cencrete fence heled his radiater., Scricusly, bad luck Brianl
\\\\\
:’
&
e
*,‘
K
4
b
IT does takc persevercnce for kecen VHFing, Bob 5ZDX'sgear ccrcs cn via
tine clock at 5am, ready for his 6am, netecor bcunce contacts with VK81
36363036
3 SF K
AT least Tomn 7FM deesn't have this troublc - 5WI recently corplained cf
7% treuble, Secers a deg had bitten through the coaxd
LML 3¢
3 363836303
303k
THE prizc for the slowcst greowing tower rust surcly ge te 7JV or perhaps
s using it as a scaffclding advertiscrent |
MMM
SUAIA N 3636 AN N
363033 3 WK
HOPE these 2mx sniffers arc abeut ready tc ze., There'll be sernc
cctivities fer then in Launcesten befere lengt
KN AN
-um:cfanc.g. fi-egmqsu =1t
suzrecsted that we re-submit cur =ppli
Lwilding and elsc change the repester fi-eqnm c Ch.1.
Peter pointed out that the output freguenecy ef fll. - ‘
inmut frequency of several satelliic swaiting laumching, :
It was refreshing tc sce abcut & hands rise when the chaiman ealled for
wlunteers to aid Reg 7KK and Kevin 7ZAH in neking arrangerents for this years
ooifest, Present plans are-fcr a HaJ_‘L, pcssibly in the Evandale area with
:1.3 catered for, The date fer the Hamfest has been set for the last weekend
inMovenber,
.
Peter 7PF, .thc state's Australis Go-crdinator then gave a talk entitled
’”-’hat You'll Need for fustralis!" and derrnstrated an orbit plotting deviee
‘cn he hopes to mass produce,. The Chairman welcormed the Ccuncil Menbers
't handed the meeting over to W.I.A, President Geoff 7ZAS,
Mike 7ZMK informed the mecting of the.advantages of E.D,P. and circulated
varicus cards invclved,
The receting closed at 10,15pr and supper was served,
FA IR
WOUL DN rc if Tin 7ZX bccarie the Education Departrent's first
'T surprise
,,,,, ~ctronics Supcrintendent, He was busy dercnstrating a new Electrenics kit
~ greup when a group of 'Tep Brass' walked in. Reel irpressed they were,
~orentlyl
FoR IR
WHY does Brion 7RR persist in travelling tc Launcesten, He doesn't scen
t. ot the message, A wallaby tricd tc resist him on onc trip net sc long age.
This tine a ccncrete fence hcled his radiater. Scricusly, bad luck Brianl.
ALy aiaas
L oA eit
s
kNR
IT does take persevercnce for keen VHFing, Bob 5ZDX's gear ccmcs cn via
inw clock at 5am, ready for his 6ban, neteor bcunce contacts with VK81
3633636 e 3 I3
AT least Torn 7FM deesn't have this troublc - 5WI recently corplained of
T% trcuble, Secers a deg had bitten through the coaxl
36 5% 30 36 3% 3 I3
THE prize for the slowcst growing tower rust surcly ge tc 7JV or perhaps
1. ig using it as a scaffclding advertiscrenti
33033
3 d 3 M3k
I 6 IR
363
HOPE these 2mx sniffers arc abecut ready te ze, There'll be sene
cctivities for then in Launcesten befere lengld
33U KR
YOUTH Radic Club classcs ccntinuc fugust 7th and 21st, 10arm, at Kings
-adews High Scheel, Block B, Reem 38, If ycu kncw of anycne interested,
»'nd thenm aleng,
AR IR NN K
MEETINGS IN LAUNCESTON WILL NOW BE HELD 1IN ADULT EDUCATION ROOM 10 AT
8 HIGH STREET,
<e e ei | e
0. R, M,
CBULLETIN CF NGRTHEIN ZONES W,Z.Au.ess...0s 80GUST, 1971,
: I PAGE 3
NORTH VESTURL ZONE
cn July 6th was very sucecssful and attendance
Our renthly noctang
was bcested by four rv*btar c i t> Ferthern Zone, They wore very welcone
o
but with pccr apnctites as there was .)umcr left over, As cur Treasurer
TMZ wes indispescd, his place was ablytoken by asscciate Tan whe, as
always, did a stcrling jcb with cculprent ete,
‘Brien 77BE displaycd o new eatonna, locking scricthing like a parrot-
cage, which he assurcd us had lots of DB zein, We hepe this is so, Nice
wcr Br* an, He alsc gave a Tecture cn DB in relaticn"to a.ntenng. gain
with facts, figures ond formlas, Very mtcrcst:mbu
We were delightedto welcene Athel 7LR te his first mecting for scne
tine, Core again A'thcl, we like te sce you.
Les 7LH was missing but we understand he ;*ot tangled with a dentist
amd cane off worsce for the cuw anter,
Teny 74X spent a wecek in Hebart, When asked hew he enjeyed the
heliday the enswer didn 't scen to confirs Uhe preswption,
We enjeyed a visit fien Couneil on the rerming of 10th July, Scre
queries were irvenca cut, equiprent displeyed and sold, and a very satis-
factcry reming all round, '
Brian 77BE cntertainced the beys tc lunch end nc doubt his prowess
as a brower wes exhiblted te the satisfacticn of all, Thanks Brian, Befcre
wve leavc you Brian, could ycu »inp inl the nicee of bush where yeu
hurled the new 2 m't:'r wvhip,” The red nay cere in handyl
Ken 7KH has just cnjcyed Ve, €0 oontact with DI3YW Germany, We saw
sone very 1ntvrestvm; revice ene reeting tha Xen roceivod from his DJ
¢fiend.
Sid 7SF has enjoycd a weck in lMolbeurne, This visit is net an
isclated cne and we wnder vhat the attracticen is, Sly cld SUGAR FOX.
Correspendence nddresscd o Kon 7AT at his Semerset address has boen
rcturmed, Plcese put us right Xen., Wwnat is yeur QTH ncw,
If you rcccive this QR and wish tc crntinue te de sc make sure that
ycu are financlal with the Nciih cr Verth Western Zene, If in dcubt sce
"
your Sccretary cr Treasurcr. /4 »~"C addresscd te Bex 12, East Devenpert, 7310
will supply en enswer. :
We were a1l pleased te scs David 7MS. at beth reetings., Keep watching
that mail bex David, ycu ncver knewvwhen AR might turn up,
Qur cld DX fricnd Sam 73 turned up tc neeting with ccuncil, Niee teo
sce you lecking f£it Sam, end keep coring
Ulvcrstcnc area: 1t was ycur turn for supper last necetingbut nc rep.
present, Devenpert obliged sc yeur tom next tire, Pleasc roll up.
NORTH WESTERN MEMBERS PL.EASE MQOTE: YOUR NEXT MEETING O 3RD JULY IS
THE ANNUATL MEETI_Q&_(_}_.
Pleasc read iast QI Dfitcrial and plcasc crie aleng.
BV N e Fe NN
FORL SALE
1, Velve and tramsister tuster, As described in "Radic Telcvisicn
and Hebbies™, 1960 $10.
1, OF and AF Signal Tracer, Valve type mains cperated Tunes
fren 170 K/C t 1400 K/C. 3
}’
6 rmeter transrdtter-receiver,. TZ, switched Xtal cse,
5763 final, RY. tuncs é mcter band using a Xtal
locked ccnverter, with mike end 2 crystals but
less pewer supply., $25,
.
6 mcter ccarial
.
dipcle
.
antennn rn 30ft., toloseopic
.
nast,
.
$7.
dh
S b ahed Pra deon ele ocad
Ahana oddl eo
i OTCOA AATL TN Y
cagc, which he assured us had Icts of DB gein, We hepe this is so, Fice
work Brian, He alsc gave a lechbure cn DB in relaticn"t antenna gain
with facts, figures and fermlas, Very interesting.
We were delighted to welceme Athel 7LR te his first meeting feor scne
tine, Come again Athcl, we like e see you.
Les 7LH was missing but we wnderstand he got tangled with o dentist
and cane off worsc for the cuw auter,
Teny 7AX spint a wecl in Hebart, When asked hew he enjoyed the
heliday the enswer didn't scen te ccwfiri Ve presumption,
We enjeyed a visit frem Ccunnil on the reming ¢f 10th July, Scre
gueries were irencd cut, equiprint displeyed and scld, and a very satis-
factery mm;ng all round, '
Brian77BE cntertaincd the beys tc lunch ond nc doubt his prowess
as a brewer wes exhibited tc the satisfacticn of all, Thanks Brian, Befere
we leave you Brian, could you pinpoint "uhc nicee of bush where yeou
hurled the ncw 2 moter whiv.‘ The red nay cere in handyl
Ken 7KH has just enjcyed e, €0 \,.fl+'!ct with DI3YW Gernany, We saw
seme very interesting evi::ene reeting tha Ken roceived fron his TJ
wriend,
Sid 7SF has enjoycd o weck in Molbewrme, This visit is neot an
isclated cne end we wnder vhat the attracticn is, Sly cld SUGAR FOX,
Corrcependence addresscd Gt Kun 7AT at his Semerscet address has boen
returmned, Please pubt us right Xen., Wwhat is ycur QTH ncw,
If you rcceive this QRM and wish tc eontinue tc de sc make sure that
If in deubt sce
o
ycu are Pinancial with the Noith cr erth Western Zene,
your Sccretary cr Treasurcr. 4 ~~"l addresscd e Bex 12, East Devenport,7310
11 supply an easwcr.
We were a1l plcased e sesz Devid 7MS at beth rceetings, Keep watching
that mail bex David, ycu ncver knew when AR might turn up,
Our cld DX fricnd San 78M tumed up to meeting with ccuncil, Niee to
sec yeu lecking fit Sam, end keep corming
Ulverstene area: it was yeur turn for supper last nccting but ne rep.
present, Dewvenpert ohliged sc your tTom next tirme, Plcasc rcell up.
NORTH WESTERN MEMBERS PL,UAQEVOTE; YOUR NEXT MEETING CIf 3RD JULY IS
THE /NNUAL MEETING, Pleascrcad iastQI Editcrial and plcasc cone aleng,
1, Velvc and transister tuster. As described in "Radic Telcvisicn
, and Hebbiest, 1960 $10.
1, RF and AF Signal Trac‘u*, Valve type mains cpcrated Tunes ‘
fren 170 K/C te 1400 K/C. 43,
.‘,
6 neter transritter-receiver,. TZ, switched Xtal csc,
5763 final, RY. tuncs € mctor band using a Xtal
lecked cenverter, with mike end 2 crystels but
less power supply. $25.
57
4
6 mcter ccaxial dipcle antennn rn 30ft, tcleseopic mast,
. . 5 . B .
i, TCA 1674 B TX. Switched for twe chonnels and with crystals
for CHS. ., B, & 4. $35.
J. Oliver, 73 Nermanstone Id., Launcesten, Phene 4432314.
Q- Ro ‘{o
BULLETIN OF NORTHERN ZONES W, I. Aceeoo...AUGUST, 1971,
PAGE 4
IT'S R, D, TIME AGATN
The crntest this year sheuld be a rcal beaut, The ZL's arc jcining fer
the first time and this shculd liven the bands up censiderably,
Can YOU werk the full 24 heurs, If sc, gred, you can be in the TOP SIX
LOGS fer the State, Hecwever therc will be scrie stiff corpetiticn,
If you cannct sparc all cf the 24 hecurs, ccme cn enyway. Even if ycu
spare cnly 15 minutes ycur log reans a bigger sccre for the Statc, and ycur
lcg is important NOT yeur scere.
ONLY 5 COMTACTS ARE REQUIRED FOR A VALID LOG,
Dcn't think that yeu are just giving pecints away tc the cther States.
cust imagine if cvery Ham thcught 1like this therce weuld be ne LD,
YOU DO NOT HAVE TO BE A W,I,., MEMBER TO PARTICIPATE IN THIS CONTEST!|
We'll talk abcut membership at a later datel
THE NEWCOMER.
If ycu have never been in a R, D, Centest THIS IS FOR YCU,
On August the 14th and 15th there is te be the BIG Crntest of the year,
T 5 REMEMBRANCE DAY CCNTEST. This centest is te remerber these Hams whe gave
their lives fer their (yeur) Couvntry, Morc cver it is designed tc get hams
¢ THE AIR. Ccre cn if yecu can and sce hew good you are, Den't be afraid to
cell CoQuR.D. o .o __ ¢ v e e e s o
Scriccne will come back and give ycu a signol repert and nurber, For
further details lce™ in ycur July issue c¢f Amateur Radic. If ycu den't have
this issue use ycur rig and ask scrmecnc that has.,
Den't hang back, VK7 nceds YOUR LOG!
Centact 5 cr reorc stations and put in your leg.
DC YOU HAVE A CALL?
DO YOU HAVE & RIG?
HAVE YOU USED IT LATELY?
WHY NOT COME ON FOR THE R.D?
Make yeur plans ncwi Blow cut the ccbwebs and GET ON THE AIR|
HERE IS A SPECIAL OFFER
If you have come cn speelally just tc werk 10 or 20 staticns fer ycur cucta,
the "STAFF" and helpers of Q.R.M., will write cut your leog fer you and pass it
t- the Foderal Centest Manager in VK4, Give us the inferrmation and your
“ccleration end we'll de the rest, This offer is only intended fcr these that
wuld net nermally have ceme cn the air,
VK7 wants tc win the trephy! Hewever, participation is the thing - "Win cor
3R KRR KR TIM 77X,
“C THE EDITOR,
Dear OM,
Many thanks for putting mec cn yeur mailing 1list te a very infermative
cooir which I might add has revived 1y interest in Anatour Radic,
iclesed is ry Zene Fee and a denatien te 'Australis',
I hepe te be able to get aleng te the ncext meeting cn Friday next,
Aooresent I eanmnet set up in any way but hepe tc have that situaticn rectified
Further te the appeal fer denaticns te '/ustralis!, My rain busincss
is whelesaling auterctive parts and accesscrics and if any licensed Ham wishcs
%, hc or she may cbtain autcretive parts cr accesscrics they require at
wirlesale price and I will denate 107 c¢f the sale te the appeal. T will be
Llezsed te supply yeu with iy catalcgue at your request,
Flcaese de net ccnsider this as a girmdick but a genuine cffer cn ry behalf
If ycu camnctspere ol of T 2L Irurs’ ariy
spare cnly 15 minutes yrur log reans =2 hicrcr Sob
lcg is importent NGT your sccre.
ONLY 5 CONTACTS ARE REQUIREDFOR A VELID ICG. .
Den't think that you are just giving pcints awey tc the cu
Just imagine if cvery Ham thcught like this therc wuld be nc D B
YOU DO NOT HAVE T0 BE A W,I,A. MEMBER TO PARTICIPATE IN THIS CONTESTI!
We'll talk abcut rerbership at a later datel
THE NEWCOMER,
If ycu have never been in a R.D, Centest THIS IS FOR YOU,
On Mugust the 14th and 15th there is tc be the BIG Centest of the year,
T 5 REMEMBRANCE DAY CCNTEST, This contest is te remerber those Hams whe gave
thcir lives for their (yeur) Country, Morc cver it is designed te get hams
¢ THE AIR., Cecme cn if yeu can and sce hew good yeu are. Den't be afraid te
ccll C.Q.R.D. or __ . __ . e e P e W e ® e e
Scnicene will come back and give ycu a signol repert and nurber, For
further details lcc't in your July issue cof Amateur Radice, If ycu den't have
this issue usc ycur rig and ask scmecne that has,
Den't hang back, VK7 nceds YOUR LOG!
Centact 5 cr rere stations and rut in yeur log.
DC YOU HAVE A CALL?
DO YOU HAVE A RIG?
HAVE YOU USED IT LATELY?
WHY NOT COME ON FOR THE R.D? '
Make yeur nlans ncwi Blow cut the ccbwebs and GET OF THE ATRI
HERE IS A SPECIAL OFFER 1
If you have ccme cn speeielly just te werk 10 or 20 staticns for ycur cucta,
the "STAFFM and helpers of Q.R.M, will write cut your log fer you and pass it
t- the Federal Centest Manager in VK4, Give us the inferrmaticn and your
dc¢claration and we'll de the rest, This offer is only intended fcr these that
wuld net nermally have ccme cn the air,
VK7 wonts tc win thc trephy! Howcver, participation is the thing - "Win cor
Tesch,
FRKHHRRHRRH TIM 72X,
¢ THE EDITOR,
Dear OM,
Many thanks fer putting me en your mailing list to a very inferrative
cooir which T might add has revived ny inlC,I‘OS't in Anatcur Radic,
oclesed is ry Zene Fee and a denaticn te 'Australis',
I hepe te be able te get aleng te the next reeting en Friday next.
At oresent I ennet set up in any way but hepe tc have that situaticn rectified
Further tc the appeal for denaticns te 'Australis'!, My rain busincss
18 whelesaling auterctive parts and accesscrics and if any licensed Ham wishes
%, hc or she may cbtain autcretive parts cr aceccsscrics they require at
vih-lesale price and I will denate 107 ¢f the sale te the appeal. I will be
lezsed to supnly yeu with ry catalcgue at your request,
Flease de net censider this as a girmick but a genuine cffer cn ry behalf
o the club,
Ed, VK7HE,
43 Faulkner Road,
LAUN CESTON,
Q. R. M,
OF NORTHERY ZONES W, I. A. TiS......AUGUST, 1971.
- BULLETIN
PAGE 5,
EQUIPMENT STORE NORTHEIN ZONE
Trading in the Nerthem Zone Sterc is still cuitec brisk, This renth
we will net publish a ccrplete 1ist of parts in steck but only anendments
te the list in July Q.R.M.
Early last renth we cbtained a small quantity c¢f Audio arp, kits built
arcunad the TAA300 i,c. chip and elrcady thesc have been scld, We weuld
like tco have scric idca of how rony cof these are required, The price is $4.50.
Asc in the near futurc we con sell a 25 watt durry load kit fer
approxinately $1.20. Kits are availablc for rest of the parts ecntained
in Sclid Statec M carphenc described in AR, The price is apprcx. $40 and
delivery abcut 2 wecks,
V3565 transistors are ncw priced at 50¢ each,
The fellewing items arc deleted fren the 1ist published in July Q.R.M.
FIBRE GLASS BLANKS
B/Lec ALUM PLUGS
B/Lee ST/NDARD SOCKETS
MPF102 F.E.T.
Regarding the Fibre Glass Blanks if the denend is sufficient rere of
these cen be cbhtained.
The _parts nornally stecked nay net be in stock depending en the demand
but—in gencral a ncw batch is rcceived at lcast cnee a ronth,
I have rcceived requests for the base crnnections cf transistors & FETs
sc here they arc
FHRRFHAF
RBANR
CUICK TIPS
Cften an idea used by nmanypeople is unknown to a few so I make no
apology to anyone if the fellowing idces are not original,
(1) in_dces) heotsinl-
Unbeatablc as a heatsink is a pair of artery forceps (available
D.H,A,) or cther scurcecs, These serve as a third hend snd better than
average long nese nlicrs as well, Just elip on and leave your hands free
to do the tric:y jobs,
(2) That nagnetiscd screw driver causing frayed nerves again, Bricfly
short cut the secondary of your scepe transfeormer with it and presto -
demaometised., If it dees not work first time sirmly rencat, A little
hard on the 'driver' but it works wenders with the termcr,
(3) Irprovercnt to the R.F, bridge (July 1971 A.R.).
Renlacing the 50 ohms bridge arm pet with a coax socket and rounting
it externally as a durmy load will allow complete syrmrectry of the bridge laycut,
STAND AR D
STAM AR D 50 KL CoAX
RECENWER e — svltt."'
Fiom No1sE GeneRAToR e /
eR e
7o Riviin,
-
/00
\CenTRE BRAID
LIy KN oW N R
CoMDUCT
This should allow rcroval of the twe capacitors used tc balance stray
capacitance, If the layout alrost identical teo June E, 4, R.F. bridge is
ATl TlAacernd e
Ralan atvi 2 412 A . o
Taand
llkc tc hawve scre idca of how iy cf these are ¥ & price
lscmthbnearfizmmwccmsenazsfltd-flw i
approxinately $1.20., Kits are available fcr rost of the parts mntdned
in Sclid Statec ™M carphcnc described in A.R. The price is approx. $40 ané
delivery abcut 2 wecks,
A3565 transistors are ncw priced at 50¢ each.
The fellcwing items arce deleted fren the 1list published in July Q.R.M.
FIBRE GLASS BLANKS
B/Lec ALUM PLUGS
B/LCC STANDARD SOCKETS
MPF102 F.E, T,
Regarding the Fibre Glass Blanks if the demend is sufficient rere cof
these can be cbtained.
The_parts nornally stecked may net be in stock depending en the demand
but—in gencral a ncw batch is rcceived at lcast cnce a ronth,
T have rcceived requests for the base cnnections cf transistors & FETs
sc here they are
FRRFHAHRWAK
CUICK TIPS
Cften an idea used by many people is unknown to a few so I meke no
apology to enyone if the fellowing idces are not original,
(1) ip_dicesl heotsinl-
" Unbeatablc as a heatsink is a pair of artery forceps (available
D.H.A.) or other scurccs, These serve as a third hend snd better than
average long nese nlicrs as well. Just clip on and leave your hands free
to do the tricy jobs,
(2) That nagnetiscd screw driver causing frayed nerves again, Bricfly
shert cut the secondary of your scepe transfermer with it and presto -
demarmetised., If it dees not work first time simmly rencat., A little
hard on the 'driver' but it works wenders with the termcr,
(3) Irproverknt to the R.F, bridge (July 1971 A.R.).
Renlacing the 50 ohms bridge arm pet with a coax socket and rounting
it externally as a durmy load will allow cormplete syrretry of the bridge laycut,
STANDARD
STAMDAR D 50 KL CoAX
RECEIVER e e Sulc¥
Fiiom Not st GéneRATR
w—%pn i
/o0 / 7 =
T 7o Rivias
CENTRE BRAID
LIy KN oW N CormdLcTOR
This should allow rcroval of the twe capacitors used tc balance stray
capacitancc, If the layout alrost identical to June E,4i, R.F. bridge is
followed balancing in this brute force way should nct be neceded as it should
sclf balence,
I suspect that this could raisc the raxirunm frequency to 432 MHz and
clirinate those rultiple paths that WBREGZ refers tc,
MALCCLM, VK72ZMS,
Q. R. M,
BULLETIN COF NCRTHERN ZCNES W.I. A, TASe....w0w .. 4UGUST, 1971.
| PAGE 6,
PROGRESS REPORT QN AMSAT.CSCAR.B
By George Kinal K2MBU
(Copy frem MMSAT Newsletter)
The A-0-B satellite (which will bc given an anorcpriate OSCAR nurber after
1sunch) is being built under the dirccticn cf Jen King, W3GEY, whe is the
Prcject Manager, We arc happy tc rcoort that essentially all phases of the
orejeet are prececding satisfactcrily, though with the usual arount of "™urphy's
law inecidents" to kecep things interesting,
There is sufficient space and weight allcowance in the satellite to fly
_hree trenspender (repeater) systems aleng with cormand and telemetry, The pre-
sress cn these systerns to date is as frllows:—
(1) 2=tc=10 necter linear wideband transpender
A werking pretctype was cempleted scre tinc ago, and twe tests have been
worferned by earrying the unit abrecad and in-flight aireraft, These test flights
srevided valuable technical and opcraticnal date which will be used te irpreve
the design and to devise and nublicize cperating prccedures,
(2) 432 to 144 MHz lincar wideband transpender
A breadbcard pretetype of this unit built be Karl MecinzerDJAZC was tested
i~ this ccuntry several renths age, The flight unit is new being corpleted,
t is cempesed of three redules, The transmitter and the rpdulatcr and power
re,ulater redules have been cerpleted; the receiver redule is under con-
ctruetion, One rcascn for delay in the latter is that the pulsc blanking
circuit which we feecl is essential tc reduce intcrference frenm radars ncar
the uplink frequency has becen re~designed,
(3) 4 Yo 432 MHz FM, Tremsocnder
L singlc channcl M"Derrnstrater® breadbcard has been received fren Aus-
trolia, Electrical pcerfcrnance tests cn this breadbcard are in pre Press.
(4) Cormend deccder
M Mendincering protetype™ net including the finel dceeding natrix, .
5 alse received from fustralia for testing and evaluaticn, This unit has
ooen sent back fer orr.plctlcn, end the flight unit ¢f this subsysten is
mder ernstruaticn,
(5) Mcrse ccde teleretry enccder
Flight units being built by Jeln
Geode
m WACAY arc nearingoonplotlcn.
(6) RTIY telenctry enccder
The digital logic eand ccde conversicn porticns cof this sub-systen have
biin cerpleted end werk preperly acccrding te Australian builders cof this unit.
Cnstructicn of the analcg-te-digital conversicn unit and the rdltiplexer is
nre zressing,
(7) Code stecre
The design cf a rorse code rercry unit fer the /-0-B spacecraft centinues,
It has been cdecided that sirple LC filters will be used tc load a 640 bit
statie shift register using mark and space trncs in a nanner similar tc
tliat of en RTTY systen, Five 128 bit static shift registers have been
tnated te AMSAT by Sclid State Scientific Corp, These units along with
), cr 5 COS/MOS integrated circuits will corprise the Code Sterc unit,
.-‘rclininary studics have been completed cn the filter design end a working
broadboard of the-unit-has been built by John Gocde, IMSAT's teleretry manager.
1t is heped that the flight unit will be cerpleted by the time the next
ncwsletter is cut.:
The status cf the satellite powcr subsysten being built by AMSAT
rerbers in the U,S., is as fcllews: Sclar panels nade available te AMSAT
arc being redified fer A4.0-B., The smtchln-type pewer regulatcr fer the
telemetry and cormand systens is presently un(“cr ernstructicn, The nickel-
cadriun storage battery wnit is completed,
€ £=_=D STl1w (VICh W OC =, =Im
launch) is being built under the directicn cf Jan
Prcject Manager, We are happy tc rcoort that
projeet are prececding satisfacterily, thouzh with the uml -I-f
law incidents" to keep things interesting, ==
There is sufficient space and wcight allcwance in the satellite ¢ Ny
_hree treanspender (repeatcr) systcrs aleng with cormand and teleretry, The pre-
srcss cn these systens to date is as fellows:—
(1) 2=tc=10 neter linear wideband transpender
LA werking prctctype was cempleted scre
-tinc age, and twe tests have been
worfermed by carrying the wnit abrecad and in-flight aircraft, These test flights
orevided valuable technical and operaticnal data which will be used te impreve
the design and to devise and publicigze cperating prccedures,
(2) 432 to 144 MHz lincar wideband transpender
A breadbcard pretetype of this wnit built be Karl MeinzerDIJAZC was tested
ir this ccuntry several renths age, The flight unit is ncw being cerpleted,
It is cempesed cf three redules, The transmitter end the rodulatcr and pewer
roulater medules have been ccrmpleted; the receiver redule is under con-
ctruction, One rcascn for delay in the latter is that the pulse blanking
circuit which we feel is essential t reduce intcrference fren radars ncar
the uplink frequency has becen re-designed,
(3) 144 tc_432 MHz FM, Transocnder
L single channcl "Dercnstrater® breadbcard has been received frem Aus-
trolia, Flectrical perfcrnence tests cn this breadbeard are in DI‘O{"I‘CSS,
-
.
(4) Corwand deccder
M Mendincering pretctype® net including the finel deeeding matrix,. §
5 alsc received from fustralia fer testing end evaluaticn, This unit has :
bmn sent back fcr crrpletion, ond the flight unit cf this subsyster« is '
mder ernstrusticn,
(5) Mcrse ccde teleretry enccder
Flight units being built by Jchn
tnGcocde WSCAY are nearingoonplctirn.
(6) RITYtelernctry enccder
The digital logic and code ceonversicn porticns cf this sub-systen have
Lien corpleted and werk preperly accerding te Australian builders cf this wnit,
C nstructicn of the analecg-te-digital conversicn unit and the miltiplexer is
nrezressing,
(7) Cede stere
The design c¢f a rorse ccde rercry unit fer the /-0-B spacecraft centinues,
It has been cdecided that sirple LC filters will be used tc load a 640 bit
stntic shift register using mark end space trnes in a monner similar tc
tliat of an RTTY system, Five 128 bit static shift registers have been
rnated te AMSAT by Sclid State Scientific Corp., These units along with
,, cr 5 COS/MOS integrated circuits will ccrprise the Code Sterc unit,
Jrclirdnary studics have been completed cn the filter design end a working
broadboard of the-unit-has been built by John Gecde, [MSAT's telermetry manager.
1t is heped that the flight unit will be cemplcted by the time the next
ncwsletter is cut.: ‘
The status cf the satellite power subsysten being built by AMSAT
rerbers in the U,S., is as fcllows: Sclar panels nade available te AMSAT '
arc being rmedified for A.O-B, The switching-type pocwer regulater for the
1‘Jderetry and cormand systers is presently under eonstructicn, The nickel- ‘
cadriun storage battery unit is cerpleted, :
The spacecraft structural asserbly has been fabricated by Bob Sprele W2QJT
~nd his asscciates, ALl maj
major parts are ready., However, we still need
“Lchanieal enginecring assistance with design and fabricaticon of varicus
s2ll but essential ccrpenents such as antenna feed-threughs, antenna depleyment
nechanisms, and varicus brackets, cte, Likewise the varicus intennas for the
setellite have been designced but nct yet fabricated, To surmarize, the clectrenic
nheystems arc 211 pregressing well, with the 2.10 recter transpender closest te
+ mpletien, A1l tclernetry and cormand subsystems are well aleng,
Q. R. M.
BULLETIN OF NCRTHERN ZONES, W.I.i.......A0GOST, 1971.
PAGE 7.
A_THREE BAD VERTICAL, VK7AK
4,
The antenna te be described wes a result of a fair arxunt of head
es
vy
s8ratching tc cverecne the preblen of a rultitude of peles guy wires and
o
tuned feeders, ccux ete., required to get threc bands with the flick of a
switch, sc tc spceek, The cnd result is a very cffective antenna nct cnly
frem the cleetrical peint of view, but frem the acsthetic angle alsc, It is
situated away fren the shack fed by coax, and guycd by pretty bluc nylen, itk
adding a db or two, To goet on with it; the "stick" is 39 feet cf 2 inch
f1 irrigaticn tubing, vertical, cn a tclephene insulater, ccerplete with four
60 fcet radials, rerc would be better, It is 5/8 wave cn 20, 1/3 cn 40, and
0.16 cn 8, Refercnee to antenna handbeoks will cenfirm that thesc give zecd
angles cf radiatien. Reperts rcccived certainly confirm this, New the nethcd
of feed, this ccnsists cf a cril scven inches leng, four inches inside
diamcter, weund fren 3/8 inch scft ccpper tubing, and a breoadcast geng, end
suitable switch cr rclays, I an feeding it with 75 chm ccax but therc is nc
reasen why 50 chm cannet be uscd, tning weuld be slightly different of
Gy
course, It will pick up ncisc a 1little, beccausc of its capture area, but it
alsc picks up sigs. tc scre crder, Ask eny ZL how it transmits, VSWR'S at
the rorent of writing 205 1-1.1, 403 1-1.02, 80; 1-1.2. The tuning unit
is located at the basc of the siic’z, in a suitablc waterprecef weeden box,
a plastic bucket might be werth investigating, cnee adjustrents arc made, nc
rere fiddling, but do it with the meter at the tuning bex ccax entry,
S80™M NRPPROX. 6 Turws Mup
20 M APPRO%. 4 Tulkis Dowr/
72 VVERT12 AL
3‘,' o
!
/4 fi/Rlv
<
G
tuned feeders, ccax etc., reqguired v gt fiee
switch, sc tc specek, The cnd result is a very cffective antemnz net cnly
frenm the clectrical peint of view, but frem the acsthetic engle alsc, It is
situated awey fren the shack fed by coax, and guycd by pretty bluc nylen, th
adding a éb cr tw. To get on with it; the "stick" is 39 feet cf 2 inch
11 irrigaticn tubing, vertical, cn a tclephene insulater, ccrplete with four
60 fcet radials, rere would be better, It is 5/8 wave on 20, 1/3 cn 40, and
0.16 cn 8, Refercnce to antenna handbeecks will confirm that thesc give zecd
angles cf radiatien. Reperts rcecived certainly confirm this, Ncew the methed
of feed, this ccnsists of a ecil scven inches lcng, feur inches inside
diamcter, weund fren 3/8 inch scft ccpper tubing, and a broadcast geng, and
suitable switch cr rclays, I an feeding it with 75 chn ccax but therc is nc
reascn why 50 chnm cannct be uscd, tuning wuld be slightly different of
O
course, It will pick up ncisc a 1little, becausc ¢f its capture area, but it
2lsc picks up sigs. tc scre crder, Ask any ZL how it transmits, VSWR'S at
the roment of writing 205 1-1.1, 40; 1-1.02, 80; 1-1,2. The tuning unit
is lccated at the basc of the sticz, in a suitable waterpreef weeden box,
a plastic bucket might be wrih investigating39 cnee adjustments are made, ne
mere fiddling, but do it with the meter at the tuming bex coax entry,
80™M AVPROX. & Turns up
20 M APPROX. 4 Tukns bowir/
TJo VERTicAL
44 7T
T 0o
. N
:
/44 Tuz
LR~ -o
40 ”
W
IF
“
I t‘ 5AL
Il/- e
%‘1-
t 3 5 GALYANISED STAR
To EARTH STAKE ; FENCE THsr
AND RAdiALS Radjals Bomdi?
To SamE
Ct?ll /4 /’Z/R/\/j - 4 pcit DIAMETER - 7 INCH ZON(/ -