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«
iforthern PO Box 1010
; Lastitate Launceston
Division. Visie 7250
Auguot 1974
Vol.i No 5
Anzust 6th Jorth wWest Brvanch, Lakxins Holl, Ulverstone.
August Jih Korthern pBranch, asB rooms, High st.
Lecturs by Fhill VET7S3S
suagast 19th Councill aeceting at the QTH of VA77¥, 2.00 n.d.
IRCY
August 24th rcom 39, dings Headows High School.
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CulT..8T
ruazust 40th and 44th -~ aArcentinicn phons contest
supust 10t and 11th ~ muropenn OW contast
August 2Lth and 25th -~ 11 Asian OW contest
Asugust 17th and 18th ~ L0iLS.BRANCE DaY CONTES
GeRasM. August 1974, Page 2 .
Northern Notes by Reg VK7KK
is it the winter nights or aren't you getting what's wanted?
Only 28 attended the July meeting and four of those were visitors!
H0pe that 70A, 7AX, 741k and Wayne Gibson enjoyed their visit to the
meeting. Good to have Harvey 2ZY%Z with us and it is hoped that this
first visit will become a regular affair,
Joes' demonstration showed us how to tune an FM receiver with
equipment that c¢very good shack should have, Whilst there were many
asides suggesting alternative methods, such as Norm's calibrated
earhole to replace a §600 CRO, 1'm sure all gaipned something
whether it be ideas or the basis for a later argument. Jokes asiue,
thanks Joe for your effortse- shows we have lecturer material in
our midst.
You may have noticed a new activity at the last two meetings.
Lindsay, 7Z2LD, has undertaken to provide a raffle to give you the
chance for a 'take away' and to help defray supper expenses. So far
a cheese and a pair of HI F1 phones have found a home., Having become
the winner of the phones last meeting 1 can personally recommend.
Lindsay's efforts,
An extra last meeting was a windfall of cells dropped through
the efforts of Brian, 7RR. Thanks Brian from all those whose torches,
Kens and transistor radics received an extra boost.
Due to a member's suggestion we're now listed on the Northern <
Regional Library's register of clubs. They are also con51der1n5
subscribing to 'Amateur Radio' magazine. As a result of discussions
during their recent Eany Radic Exhibition a suggestion for an
Amateur Radio exhibition was made by the Library staff. Norm 7NR
has offered to coordinate this activity and would, no doubt, appreagiate
offers of historical equipment, suitable photographs and old records.
Despite this being a few months away your thoughts would be appreciated,
Can YOU help?
A visitor for a weekend recently was Malcolm 3MW who spent a
weekend in Launceston. Secems Malcolm was impressed with the activity
‘noted on Channel 48, Advice has been received that Gordon Dawes,
VK3ZLA, will be visiting Tasmania during the week August 12-16 and
would,welcome meeting locals whilst here( contact via Dr. Wood,
Westbury).
You have2chance to keep up with the local electronics scene
at our August meeting. The Furneau Group Radio Concentration System
will be explained by Phil Thomson, 788 . Seems this is a series of
base stations and a subscribers' phone system searches until it finds
an avsilable base, Anyhow.... Phil has slides and plenty of know-
how to tell you all about ite. Noted Phil referred to as a " Southern
eesesFieeess On a recent broadcast! Make Phil's retreat North
worthwhile and find out what "professional communicators" are doing
in our region.
Y.R.CoSs Activities
It has been decided to fill in off weeks of YRCS meetings°
by an activities day. The prime reason was to allow work on a club ¥
project but it was thought that it may be worth making it an open i
session, The following sorts of activities are envisaged; &
1. Operating club HF and VHF equipment.
2, Group CW practisec.
i
Cont. Page 4
we Reile august 1774, Page 3L
North .sest notes by Max VA/MX, :
During the last few weeks I nave had ample time to think a
great deal about many things including ham radio.
Being incapacitated for several weeks, to one who is active
can be a great trial, but as usual radio has played its part.
Instesad of bemoaning my lot I have spent some pleasant time
in the operating chair, chatting all and sundry and thankfuli
that I nhad the brains to become a ham. vne is never isolated,
has pleunty of Ifriends and its hara to feel sorry ror oneselfl
with a Q50 in progress. The moral is to keep the rig in good
order so that it is ready for action at any time.
In early July a very severe solar flare took place, this made
things very interesting, with blackouts in some arceas and most
unexpected signals from rare places.
Branch news is rather scarce but we had a most interesting
meeting in early July. There wasa't much business, the main
item being that the dinner idea &8s abandoned. sSeems most
people are too busy with various interests to afforad anlbht
for branch jollifications.
Following the meeting we were treated t0 a most interestlna
talk by Harry VK7AR, on the change and progress in commerc1a1
mobile units over the years. This wus ably demonstrated by a
host of units from vintage to modern which Harry had amasseu.
Very interesting particularly to the VHF boys.
Thanks Harry and we look forsard to the next one.
Wwe were pleased to wselcome Cliff VK7CD once again.
Our worthy counciilor Graham has had a spell in hoapltal,
something in the nature o' a impedance mismatch but last
report he is coming good.
Tony has been Ireternising with the &ing of beast or some such
80 we have missed him -on 4 couple of occasions. He is in
Hobart at present; tralnlno course we believe.
Peter VA7PF is having a rugged time at the local balt mine
and can be heard dashing about vetween Devonport and wynyard
even at weekends.
Charly VK7CF has been heard from Burnie on 2 on several
occasions. B0 74ds now has a local contact.
I will finish on a few suggestious-
How to Handle a #oman rbuCTRICALLY.
If she is wrong - rectifier.
If her hand is cold -~ heater.
If she wants a vacation - transmitter.
If she talks too much - iaterrupter.
If she is narros - anplilier.
I her views do not coincide - corrector.
If she flirts - eliminator.
1f she uwants a date - meter.
If she nants to call - receiver.
If she wants ai escort = conductor.
If she wants to be an angel - trantormer.
B
If she proves your foars al'c wPoiy - compensator.
If you think she 1s golng out with others - aetector.
And if none of these worx, brother youa're short cicuited.
CUL Max 7MX
Q.R. M. August 1774, Page 4
_ADIES PAGE
Time sure flies by, its aliwst R.D. contezt timce agaein and
voy I know what I'ix in for.
John usually operates for the full 24 hours wand every hslr
hour or so there's a call frow tihe shack "coffee" or "how
about something to =zat" and then when I do toxe somethlilg
in to him I get nothing but "sshhhh' or "don't speaw I =u
havingz a coatact", talk about annoying!
But thats nothing compareu with his constructing n=sw pieces
of equipment, as the hauashuick is alresady overflowing, he
usually brings his bits and pieces into the dining-room
which means we eat our dinier in the lounge off our lap.
QRM is another problem, when the table is cleared of bits
and pieces it is QRM time again and the mess of ?agers,pags
and typewriter remeins there for 2 weeks or nore.
vell at least the kitchen is mine, that is untill Le briags
his photographic equigment out.
But I'm prouc of his Lobbies and .ouldn't like it any other
way: or would I?
73 Joy Mras.VK7JV
000000002000000
Spiced cookies
1b flour
1t butter
b O] 0}
ib soft brown sugar
tablespoon milk
tablespoon cinnamon
= = oh 7
teaspoons baking powder
teaspoon salt
teasypoon ground cloves
teaspoon nutmeg
-0+
teaspoon pepper
teaspoon anise powder
blanched almonds if required
Cream butter and sugar, add spices, then mix in flour and
milk. After working dough into a plyable ball, roll out
very thin and cut into shapes.
Half almonds may be pressed into top of eazch biscuit.
Bake at 425° for 7 minutes then at 2250 for 25 minutes.
Joy MNrs., VE7JV
00000000003000000000
l,fi{ze R.;.i. :‘-\‘ugust 197)_‘,’ Pa-e;e 5
by Den VK7DK
DXnotes
Jell, as all you avida DXers will know , the DX has not been
too available over the lust month, and the pickings have
indeed besen slii.
The ¥ stations are the only ones that have been cowing through
with any consistency, particularly the West cosst. They have
been coming through froa 02002 till almost 0300Z, and at
gtrensths up to 89+. Lven on 40 metres the ¥'s have been guite
Z£00de
The openings to Eurups have been quite poor, with the I's
being the more proainent.
The central Americen countries have besn coming in very well
ga occasions, around OLUDZ with sigs up to 89 plus. a4 few of
the Carribean countries heard at good strength around the
same time.
LO metres does still .arrant close attention, as you never
know when a DX station may appe.r. 1 wvas idly, tuning 40 at
0650% one day \r“a I loboed on to a 55/9 sizoul and found it
to be 5WiaU, Phill. we hod a yarn and he wished me to lst zll
and sundry know that he is on 20 most nights 0L/0600Z and on
40 (70%5) about 07004, QSL via WHKNH or Vis the bureau. I will
add here that HE IS the buresu over there.
80 metres has an occasional surprise, such as ZK1CL one night.
ZE1 1is not that far away, but we dont hear many of them, evew
on 23.
Night time 1s &ll but 2 dead loss on 20, but one sizepless
night I wandered in the shzck and wvas surprised to hear soe
weak W's at 15004, One .ay skip was very evident as I waus
gettln them no better thun oC yeu the return reports .ere
'f‘bi-.‘(
S9. I donat KL:' » but 14 way bz & cuse of elastic 5 m:ters
S0Ie O tfi‘! e
The PFollowing ! shatiens wzy be of sonme helys; but
of course the iditions ehanga from Jdey to Cuye
- N SAQ N -
,
LLL.) 0 £/ j)'bLJt J;—;' Soe dweldD Jr
/ i
1@.,!14\;;,)& '_:-lld v.w" .
9 Jis
20 00/02007 ONS5, Hi, 012, ko5, 2J, I's, DL, Ead,
e £ gy o s N ¥ s - Q - , N 2 8
I, YV, Gy, SM.
g2/0400 W's, 3D2, V..
0l4,/05600 N'3, Jus (viest Coszst), OAlL.
06/0800 w's, Vi, Va prefix,, as, I, Ydo, #C.
23/2400 ON, DL, UY5, Ontl, UC2, ba2.
7 -
( short patlh has not bsen very raliables,
- \
Any coentributions to tresc notos Joulld be very selcoule =3
there must be & lct I miss.
YCOO
-
LG -INGIT
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VHE
———— iFRotes s - be e eJog
v e Vi {4Gd
Mid winter openings ided slenty or ~etivity
althoush this wmonth the only stetion -~ orlked
via the usuc
From 20/7/7 advancoasnts,
uubJl"\Qrs :* "ol ara runpninge o VHE statz of the «rt contest.
fOl" ’.fi‘(‘4 = 2 s a1l > i
For those interas 1 wn maintz2ining skeds at 0600 {loeul,
o H Eig 2 ] i : ly takes 15
minut bzsn workoed.
cont, 3 17
DaRolla August 1974,
e TeVs Cumer,
by VE222N/T, compiled by Vaillc
Jell for ease of conscicnce here is @i article that g at lesst
topical. It appoears that "4.R." 11l also gproduce this Camera
(probably in wcre detail; but ot lecaste thls beats theuw to the
fress. Altbough not written by tie construetcr, circuits arec
as supplied from him , loyouts 2s L interpret them and 1 wiil
attempt to congtruvet the unit as 1L procecd.
I am {old trat tie camers has resolution to Commercio.
standards but 1t does not have the fTacility to operate 1n
simple closed circust ag it requires external Vertical and
Horizontal drive at 237 interlsece and also an exterial proceco=
ing amplifier to give composite video., So 1f ycu are like me
you'll be tidying up that $.P.G. (still half built) or getting
on with a unit to give tne necessary pulses. An article on the
Processing Amp. will follow that on tne camera also, if not
previously published by 'Afi' one on a grey scale generator. All
circuits supplied by 2Zri/T. So, if YOU want to help, 1 have
the circuits, you prepare the article and GRM will print it.
The camera is driven from a dual supply having +, =
12 volt and + HT for the tube, a 7033 or ecuivalent integral
mesh tube and planned around yofes that were purchased from
a Japanese supply arouna two years a go. Some endec up in VLY
but I believe there are no more leflt at present., Incease demand
could cause a supplye. Bob 7KEF could be approached and bled a
little for details of winding your own, Perhaps, Bob, an
article for gkl
As stated earlier, the camera is a driven unit necding
Vertical drive to the vertical board for Vertical deflection
and Horizontal drive to the horizontal board. Outputs from both
of thesec arc Ted to a Vidicon Protection circuit on the
Vertical boara which blocks the Vidicon with loss of eltner or
both drive so protecting the Vidicon tarpget. The horizontal
bosrd also has the focus circuit which is an electronic
current regulator, The nead amp 1s on a separate board.
Personal preference is to keep these boards as separate
as posgcible to allow for modifications without upsetting the
rest ol the camera,
Bouks worth reading;
Cy TV ail issucs
VAR Communication Dec 1972, June 1973
Amateur Radio 1G5
QYOOGS I Yo s o200
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Plastic Taek
Hext month, Horizontal and vertical circuits.
SeRelie sugust 1374, Pa.2 5
. by_Rus3ellVATl
when ma a printed clrcuit toard for thst next project
coiisider the followirng uethod.
In the first slace uwake &11 ygour boards the ssme slze e
57x 2" even to the extent of rv&rleAn cgpiu” from maz
mre use of graph paver lined 41 tenth inch i3 a sy of makin?
layout cosy Llnfw the lins upuaiug eguals oin gzoeing of
D I.P2.
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H
alse -
LJLk,s\-d 25
Tranusfer the mastsr cony to the hourd by tuping into position
then lightly centre punch hole iocuticase.
When this is dore clew. +ith & 30t cocurer then .ije over
with metholat=sd spirit, tuitz care that no countamination of
rs
the ccpper taxes placa, iagevF.
Now thz conductors mey bes draviy lu with a resist pen and &
rulzr the centre puach narks locaite the trucxk position, if
the ink does not flow svely cunscxk cleanness of the copoer
surface
For the etchent use a 6 ounce ccffee jar, pluce a xnob of
ferric chloride in the Jjar equal to two des=srt spoons full
then add hot water, not boiling, you may cracik the jar if
it is cold.
When the ferric chloride has disolved the board is placed in
the etchant so that the copper surface is down, the near
vertizal position encoarag<es ths ciculation of etchant,
makKing agitation unaecessary for guick results.
The advantage of the above is tnat a check ol progress may
be dons at sny time by viewing it through the jar held up
to the light.
4 oo
1
ALGE
1
ap
Li board is removed reslacing tae screw-on cap stores
the etecnant for further use.
S sl v ko bs o ol g3 e ooto 4 e ok O K ek eok
es ool eo s sl keo ot el
#tch resict pens for your circuit boards are still availablc
from the lorthern Branch ['~ui_.neat store, we wlso h‘v, a fe.
LI723 IC's as used in the rsgulzted pover sussly described
in (;Jl;‘;r Aeile
QoRe M. august 1474, Page 9
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July 1374,
Reprinted from, AMSAT ne.sletter
Getting on Oscar 7: L432Mhz eqguipment suggestlions and bilolicgraphy.
by Joe Reymann, WoPAJ
e o
o 5A el Ne et e Ae A et s 18 A ————
et~
The imminent launch of alMoal=08CaAR-B (to be known as AMoAl-
OoCAR 7 once in orbit), with its 432 to 144 Mbhz translator,
has created a surge of interect in transwmitting eguipnent for
the 452 bz band. ror those who prefer not to design (1ow
scratch, or who lack thic time to wo 1t right, this article will
serve as a reterence source for eunougn eygulipanent of various
types to be able 10 assemble a 4o< whz trausmit cagpabillty.
CW Transmitters
Leep in mind that the preferred modes on JUscurl 7, 28 OO uScCal' Oy
are cw and ssb. The lower duty cycle or these modes provides
more efficient utilization oI the limited spacecral't ri power
than does fm, am, rtty (fsk or ar'sk;, and sstv although ail
such modes have been useu through uJscur o.
CW will probably be the most popular (at least in terms of
number of users!). There are two inexpeasive and "easy' methods
of generating stable L32ihz cw power: Modif'ications of
commercial 450 lhz eguipment, and building oo buying a varactor-
tripler from 4144 ihz.
Readily available on the commercial surplus marget are several
varieties of 450 iz 'm transmitter sirips, at $1v and up.
The suthor has had experience «ith the mMotorolw units (from
Ty and Juyi4 etc stations), which put out about 15-18 watts at
450 Mhz. Follow the simple conversion instructions in the
popular FK 3Schematic Digest for sotorola units and then
disable the modulator and provice a method for Keying as 1in
the September,1771 QST article. ochematic information 1s also
available for G& units. Almost every arca of sizwoleée ham
population has someone up on the latest availabllity and
conversion of commercial gear. A Iew minutes ith nim wild
answer many questiomns. gome commercial power anpllificrs are
also available; see that section neiow.
The varactor multiplier has a lot going ror it. It is
relatively easy to builld and needs no power supply. Its overall
efficiency is decent. Operating at mediuww power levels
(20-40 watts input), it does generate some stroie 'auxillary'
signals wich need to be suppresssa. However, consiaering the
cost and speed of construction, it willi ve a iavorite for hams
new to 432 Mhz. geveral circuits have peen described in ham
literature, both doublers and tripicrs. The tripler circuilts
should be more popular since 144 whz transmitters are more
numerous than 216 ihz ones. Comnercially built units are wl.o
available.
SS5B .
A single sideband (or all mode) transaitter can be made relatively
inexpensively. anyone with 28, 50, or 144 Mhz cw~-ssb equipment
can generate 432 Mhz cw/ssb with any of several transverters
described. The suthor has one 0f the neat littlie 28-432 ilhs
units described in VHF Communications. 1t is solid state, works
on 42 volt dece and worke atv low signal levels. This last is
a matter of choice, but the autiior prelers to Jenerate a low-
level sigral on freguency and foliow tnat with linear signal
amplification. Generating high-levecl signais has wn apparent
advantage of needing fewer stages; but the unwanted proaucts
are harder to [ilter out.
QeRelMe August 1974, Page 10
Anyway,s the VHpF Communicaticns unlil coste less than ¢35 for
the basic components L1t ana 1s avaliunle througn BoL mide at
the address shown. It vuts out 150U-:50 me¢ depeading on 'B+'
veltage on the Iinal trans.icstor ampliirier, but tne cisadvantages
of this are outweighed by the opportunity ol being i the
technicgl foref'ront witihh a LJ2 Mo ssb signal.
There are tranesverter civcuits operaiviag Irom 19, 0, and 2 meters.
At least one unit is available commercially made, in addition
to the VHF Commuhications unit Jjust mentioned. Braun in west
Germany, which used to huve reprecentation iun the Uese, has a
unit advertisec in foreign VHF puvlications. The transverter
in genersl is more couples to builid than the varactor multiplier,
but has the adv-ntage that 1t is not mode limited.
Jlie transverter, operating on the heterodyne princinle rather
than mulitiplication, can be used o0 w.y wwode the exciter cuu
generate. It 1is therefore the better iong tern: solution tu
getting on 432 Mhz.
Power osmplifiers
AMSAT cstimates that 300-400 watts erp (effective radiated
power = rf powsr delivered to the wantennu multiplied by anteilis
gain) will be needed to work through the [32-i44 Mhz transiator.
I imagine that the ruoal nebls will Lave mor: iaformation on
this as launch time ap.roaches.
kost users therefore wili consider a povier amplifiier. Rememper
that the best and chegpest power amplirier +iil probably be
a petter antenna, but imore on that later.
A good starting point for 4i2 power amplifiiers is the June 1471
article in Ham Radio maguzine. Lrom there the biblilography
lists severel circuits of varyinyg complexity and cutputs.
For those not familiar with vhf circuit construction, the best
advise is do your homewors in the VHEF Manuals, select one of
the less complex circuits ana proceed +ith care. Nothing is
particularly difficult, but vhf constructiol practices are
somevhat different.
A neat solid state three stage amplifier has Jjust been desceribed
in the spring 1374 issue of VHF Communications magazine.
Operating on 12v dece it is a natural companion for the
transistorised transverter mentioned above.
A great source of power amplifiers is the Motoroia L4
(or Jyy etc.) unit mentioned euriicer. ihe largest part (rfor e,
of a 432 power amplifier is the plumbing or metal worik.
Commercial 450 Mhz fm units have that alreuady done for you.
A major benefit of the Motorola T-1410 or TU-204 series transmitters
(used in the =-44 series, is the case of removal.
Take out twelve screws, clip half a dozen or so wires, and you
have a ready to tuae two stage 2C39 amplificr (actually a
150-450 ihz tripler and a 450 uhz power amplifier;. Both tune
down to the 432 Mhz region. Together with the VHr communications
s0lid state up-converter from 1C meters, you'll have a pretty
easy Jjob of generating 432 sso at a resonable pover level
(10-40 watts depending on power supply voltasxes). wWith a decent
antenna and little line loss, that should be enough to get
through Oscar 7, or this setup magkes a grest exciter for a
higher power amplifier. 3By the way if you do get your 2C39
power amplifier this way, save the rest of the chassis. It is
a complete 2m fm transmitter endin: in a 2aco or 0146 with
little or no conversion nesded,
QeRebeo august 1974, Page 11
Motorola and others make several pieces of 450 Mhz cowmmercial
band equipment which operate at power uotput levels of 50-250
watts. ihile conversion information is not reaaily available
on a step-by step basis, the circuits are nct nearly &as
complex as the exciter circuitry, so conversion should be much
casier. Many will tune to 432 Nhz as is. A limiting factor for
meny will be availability of schematic diagrams, but most
power amplifier conversions doun't really require access to
schematics. Remember the local help available in many places
from the ham fm fraternity, or local hams involved in servicing
commercial eguipment.
Antennae
A8 we sald earlier, a good antemna is probably the cheapest
way of obtaining gain. Let's digress just a bit to amplify
our earlier statements on erp, for those nct familiar .ith
its application in ham circles. iour cffective radicted power
is the power input of your transmitter with losses considered;
amplifier effieiency (100 watts input might give 65 uatts out)
and tsnk losses, loss in the coax cable (your transmission
line might eat up 75% of your L4232 energy!), multiplied by
antenna gain. antenna gain must be a pure number, not in dB.
A 10 dB gain Jjust happens to ve a real gain of 10 times, but
other dBE numbers require some interpretation. a4 gain of 13 dB
is a multiplier of 20, a guain of 6 dB is a multiplier of L,
and so on.
- o
Antennae for the 432 ihz band are very cusy anld ileXxpensive
&
10 make., A few hours with a hand drill, hacisaw aud file will
result in an 11 element bewn described in the ARKL VHE Manual
(2nd edition). With a little extra efioirt, u nice crossed yagi
can be made by doing everything twvice. hkizterials nscessary;
one piece of 1" by 1" timber, a few aluminwn or brass .elding
or brazing rods, a u-bolt for mounting, and coax connector and
coax for the feed,
In choosing your antenna, remember that a pover gain of 10 dB
is egsier and faster to obtain by switching I{rowm an omni-
directional antenna to a yagi. sven a gain of 13-16 dB is
obtained at {32 Mhz in a very small anteluna. of course you
also gain the necessity of tracking the satellite by esntenna
rotation every few minutes, which is wnnecessary with an
omni-directional antenna. But even vertical osnii-directional
antennae have a cone of silence upward rruwm the end, resultlug
rln.some periods@f -unusabliiity on neur overihead passes.
For antenna tune-up, build a cheap but effective reflected
power meter. I have build both the one in tne sRklL VA wanual
and the one from Ham Radilo magazine. 8oth are cagy and
effective, but the HR unit is & oureezec to ussemble i'rom thv
kit and is almost foolprootf.
Azlmuth-glevation isounts
Choosing a directional antenna implies that you are going to
rotate it to point in the general dircecetion of the satellite.
The ordinary rotator is dssigned o pouint the antenna in
azimuth, or horizontal airecltion. [hat «pproach is usauble Tor
satellite work, butl the more gain your zutenna has the narrcucT
is 1its patltern. .hile gost amateur auniznna systems will have a
pattern of at least 45 this 1is narrow cnousgi to limit your
8ignal into the sateliite on orpits .iuose track is closer than
500 miles from your locabtion. 1¢ lhielps 0 mount your beam on
the rotator so that 4t points aonout 1.-20 degrees ubove the
horizon. )
QeRoelie adgust 1974, Page |
This wiil reduce your u.a.orLudlie¢ wl'cu Lo a relativel, small
part of the oroits very lear tac tocal verticsl. Houevaer, tic
purist complains of wiy cogapromicz, znd awcst of us have to
use any antenna for many uses; ohio cun JLTord to muke a speciul
purpose antsnna just for cuteliit-sy oo it helds to be able tu
point the antenna in elevation us well os the azniautin
The resulting radar lixe antennic zystem might seom Like
something out of the movie '.oud’ Lo gour neighobours, but it
is easy to builld ana operate, wna the cost can be kept Llou.
The auvtuor's iluastallation was iwue I00n two IV rotators, and
crossed yagl antennas on jlyy aad 42e Mhz. some have even adaed
a lightweight 10 meter beam (wsTl, way 1973, 2.62).
shatever rotators you choose, pick ovne with szt and forget
controls rather than the Lold Jdown tne bal typee.
watching an azimuth or celevation indicator is not ror the
satellite tracker. I use t.o aliiance rotators, a C-o25 for
azimuth and a U=-100 for eievation. The less expeusive U-10u
can be used for poth functionus. kuke sure you pick an eievatiocn
rotator of the type where the poom oes entirely through the
rotor.
Biblioygraphy
In the bibliography whicn foilows, some anlss are describved
in seversl different places: 101 CcXunp. =, il the Luodbook alld
the VI Manual. The plurulity oi references is given to
facilitate location by hams who aight not fave acceygs tu o
particular puolication.
Biblicsruphy of Lo2 shzwguipment
AMpLiTIiers:
P and Repeaters, AxRL peoy )
Ham Radlo sugazine, osept. 100, peo
Ham Raqlo hagazgine, aple 17U, peiid
Ham Radio wagazine, June 1:71, 0.0
ST, april 1972, LeuY and way 1I72, pedYy
QoT, Ucts 1972, pei1
Radio amateurs Handbook (arkLl), 1970 or 1.71, pe4bZ
: i 1973 or A7l pell20, 232
R3GB Vi Manual, p.o=750, 0-54, o-30¢
VHF Comanuanications magazine, Nove 1770, p.<36
X\udu 177(: ) pl 1“-‘-4
OpPriug 1774, pPeldV
antennse;:
QBT, Jane 1972, pe36 and waurch | :I7-
@ST, Juhe 1373, pe2d
Radio sunateurs VHEF wunaal (adill), 2040 wlde e
Azimuth-Llevation sounts:
Gw‘, Dece 1)70, pou.;
@ST, May 1273, p.62
woly, June 1373, peit
_
Catalogs:
Allisnce Manufacturiag Coumpany, alliunce, Ohio (rotors)
Cushlruft, 621 Hayward st., koachester, ey hampshire 03103
Lantznnas
o Rebie august 1374, Page 1=
Carmichael Comaunicstions, £.0. sox <uu, CuPmichael, Calir. o006
)
( Creasverters
“x
Jd=Beam antennas, C/0 VHE Colillidilicaliciie wmapdzaing
Karl Braun, Bauvereinstrasse 4u, ool Narnbely, west Uermany.
(Varactbor wripiere oho caieveirters)
Spectrum Internstional, ooa 1uoh, Loicord, wass.d1
75 (multipliers)
ommercisl purplug:
’C
M schenatic Digest (mlborc.u,, ¢0.5.0 tu Lewoil, Pe0.50x% 535
Lexlngton, wmass,
Vol/o{e2e Concii toon uly Jaile 1.71)
;ST, Decs 1)‘74\, P.&{C alid Fée 1;‘7; L Pe S0
Test mquipment:
Ham Radlo wmagasluae, Dec. (37<, p.l<
QL"I‘, ":Xi)f'il 1972, ‘C'o 21
VHF danuel (AKRL) 2nd ad. pe2l0d
3rd sd. 6317
ARKL Handbook, 1773 0r 1374, pes0
Transmitters:
R3GB VHF-UHF manual, p.6~72
o
Iransverters:
Ham Radio Jan. 1970, p.4o and Juns 2790, p.72
e-
Han Radio June 1371, pe.d
QST ’ Nov. 1 973 3 ‘J.L‘? =41d ? ,/71# 2 e ();,
VHEF Manual ARKL, 2nc zc.
Ard i
VHF Communiications,
Varsctor kultipliers:
Fi and Repeuters (ARRL) ol00
Ham Radio, Octe 1903, p.>o
Radio smateurs Hanaboos (-alkl, 1.7v: el 1971, peliu3
3 1570 2e217
VHF Manuel (ARRL) 2nd ide, pe2l4s
,:rI'.i e ’ ‘P-o 268 9 &
R5GB VHF-UHF Msanual, 2.0-1C
COD0OCTLODAVAII
)VGLULlLLicew
Cont. from 2a e 5 VHER notes v Toc Yr723J
If you require further inforuation ~iv: me a ring on L43352 or
a call on Ch.4y38.
Two metres has been very cgaict ita o inversion arcund this
time of the year, so this is = so0d ooportunity to check out
your ecuipment for the R.. conteot,
e
™ 3 B - h 1-
T111 nz2xt Lonth
)
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