QRM
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NEWS AUGUST 1982
Issued by Tasmanian Division of Wireless Institute Aust:
Registered by Australia Post Publication No! TBHO0043.
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You will notice that QRlM is stapled together for
the first time. Thanks for this go to Jack VK7JF
who kindly donated the necessary equipment.
A few articles submitted to us have again not
been printed for various reasons, e.g. unsuitable
out of date and inaccurate material. Articles
may be printed anonymously, however a name must
be- supplied for the purpose of checking the
information.
On page 16 you will find a questionnaire which
will give some guide lines for both QRM and the
branches to follow.
Many thanks to those people who have bothered
to submit articles, suggestions and praise.
Keep it coming, we need all we can get,
WHD'S WHO?
VK7MX Max Ives Cressy:
It was in 1924 that I came to know the now late
Lon Jensen, We were at the Devounport High School
together when he put on an exhibition in electrical
and radio phenomena. At the same time a mainland
company exhibited a large new wireless with a big
horn speaker. We heard rarmers Ltd. in Sydney with
lots of static and a good deal of imagination.
'I became so carried away that I took up radio, freque
and, a pair of high impedance headphones and a cats-
Laf
whisker crystal detector radio have 1
whisker crystal detector later, oh, and some copper succun
wire and about a year's pocket money, I had a crystal I nhave
receiver working. as whe
Within a short time I nad a valve set working; a new br
Philips DI, directly heated with 4 volts at 2 amps, a home
and about 20 candle power., I still have it. And so I It doe
went on to regeneration, T.R.F., and finally to Super into o
het receivers., I made resistors from lead pencil I n
rubbed on cardooard and variable capacitors from tin was arg
plate and three-ply. About that time two of us had a 1956,
funny way of communicating but I'll say no more about Two
that. and di
And so the experiments continue until World War 2 Vees o
and as 1 was in a reserved occupation, I joined the father
V.D.C. in the signals section. There I passed a morse fied ¢
test at 18 w.p.m. and had some experience in the occasi
operation of radio transmitters. I also became a back w
morse instructor in the Air Training Corp. radio
Study in connection with my work, rearing a family Amateu
and home building delayed my entry into Amateur Radio.
world.
Finally I joined in 1956, first the W.I.A. and with
though
some nudging from VK7J0O and others I obtained my full yours
licence. In that time we depended on kind amateurs the wo
to pound the key for us and it was then 14 w.p.m.
Cont.
They were the days of A.M. radio and so I built
a 70 watt transmitter with a screen grid modulator.
I secured a lot of bits and pieces from disposals
and wound all my transformers including modulation
types. This saved a lot of nard earned cash. I built
a double conversion receiver with crystal filters,
BFO, etc. With a cubical quad made from bamboo fish-
ing rods, I worked round the world. It was tough
going but very rewarding.
In those days we learncd the hard way. When some-
one calls you and asks 'Do you know you are on 7.2
Megs?' and you are supposed to be on 3.6 Megs you
take some smart action and find you are doubling in
the aerial coupler. At that time we always had a
frequency absorption meter handy.
Later I built my first Single Sideband rig. I
have to say with tongue in cheek, that I finally
succumbed to the popular BLACK BOX. Since doing so
I have never had the same interest in communication
as when 1 used 'Home Brew'. I feel sorry for the
new breed of amateurs who have never suffered from
a home brew headache. And I don't mean gassy 807 s!
It does not surprise me that amateurs are branching
w
into otner fields where there is more Do-it-yourself,
I nave done my share in WIA activities since I
wassappointed secretary of the North West branch in
1956.
at Two years ago I moved from Devonport to Cressy
and disposed of beams etc. I now have only inverted
Vees on H.F. and some beams on 2 Metres. As old
father time nas no respect for persons, I am satis-
fied to take a back seat in radio apart from an
occasional stir when I think it necessary. Hi. I look
back with satisfaction to my explorat ons in the
radio field. I say to young members I believe the
Amateur Radio fraternity to be the greatest in the
world. So try to keep it that way. Have you ever
thought - your callsign is peculiar to you. It is
yours alone and only you are entitled to use it in
the world. So, be worthy of it.
73 All; VKTMX.
TRANSMATCH FCOR MATCHING RANDOM WIRE ANTENNAS TO GENERAL
COVERAGE RECEIVER: FREQ. RANGE APPROX. 1600Khz - 30Mhz.
The average improvement over direct connection of
antenna to receiver is about 3'S' points. (On some
frequencies, and depending upon length of antenna,
improvement is negligible, whilst on others improvement
has been observed as high as 40dB - using FRG 7700.)
Note that by adding a suitable D.F.D.T. switch, with
High isolation between poles and between sections, the
Tuner may be by-passed to permit direct connection to
receiver. e.g. for broadcast band reception or for
rapid comparison of achieved improvement over an
untuned antenna.
Cz Settings of Cl1l, C2, SW1
Cla best found by trial and
error. Suggest use of
\
o 05 s" s
low power rig & SWR
e—CCW
Moo
bridge for amateur bands:
(;::3:reneni) C \b Sw i (for the perfectionist)
Unit generally more
\
Geor effective than several
erArion &—— active antenna circuits
ERRTY = = tried at VK7BP.
Cl - 2 x 500 pf B'cast cap./(* 100 pf) If lower limits
C2 - 500 pf. B'cast cap. used, low freq. limit of
1600 won't be achieved.
SW1 - 10 (or 12) position rotary switch.
L1l - 54T 26swg or 25awg fully wound on Amidon toroid
red core ex Amidon 'Experimenters R.F. Toroid Kit'
Tapped as follows - from start:- 5T (-3) 8T (-3) 11T
(-4) 15T (-4) 19T (-5) 24T (-6) 30T (=7) 37T (-8) 45T
(-9)% 547, SUGGESTED LAYOUT:
#¥ May be increased to decrease
lower freq. limit to below V- iC
1600 Khz if space on core.
Ensure capacitor rotors are
insulated & use insulated Box: Arenoy Ci
couplings to drive shafts. x4x5"
By. Brian Proudlock VK7BP.
RAL
12,
| HOBBY ELECTRONICS
|N 83 Carella Street
ent ST0CK Howrah 7018
Ph. 476674
(At I7/7/82)
OTHER NEW EQUIPMENT. ¢ H.F. TCVRS.
|ol
AT 230 COUPLER 195 TS530S demo
ILSG SIG GEN I45 FT7 used
ICSM2 701 MIC 45 HW7 used
;s: MC I0 MIC 23 SE502 IOm used
MC 355 MIC 31 -
YE7A MIC 18 2mTCVRS.
ICBP4 IC2A PACK I0 IC22A used
3 ICLC3 CASE 8,80 IC2IA used
ICMB6 22S MOUNT 29 IC202E used
ts ICMBS 70I MOUNT 26 IC2I5 used
' ICFA2 2m BUCKY 13 KP202 used
SS-2 2m S/STEEL 4V 5
HK 701 KEYER 26 ROTATORS.
l CN620A SWR 95 CDE BIG TAILK
VC=2 SWR 29 103 LBX
3 ANTENNA ISATV used 50
T ATV.
BLACK & WHITE VIDEO RECORDER, SANYO VIC 7I00 INC
CAMERA AND POWER SUPPLY, ZOOM LENS used $250.00
7: ! SSTV.
ROBOT SSTV, FAST TO SLOW used $600.,00
Ovm
The club was founded in January I980 to encourage the
challenge of using the CW mode under low power conditions,
( 5 watts or less ) and thereby promote the study of radio
propagation, antenna experimentation and the design and
construction of home brew equipment.
The exclusive use of the AI mode, was chosen specifically
to emulate our early pioneers who battled against similar
odds to our present day QRP endeavors.
To give some tangible results, the club runs two score-
boards, one for VK-VK contacts only and the other for
contacts with DX stations.
The fee for club membership is $4.00 per annum, due in
January of each year. This will gain you initial regis-
tration but associateship can only be achieved on the
accrual of 50 or more points, on either scoreboard, or
a combination of the two. At this time an attractive
certificate will be awarded for ¥I.OO.
The club issues a quarterly newsletter which informs
members of the latest scoreboard listings. It also cont-
ains technical, home brew, awards and contest articles.
The club is a member organisation of the VWorld QRP
Federation whereby an exchange of ideas and mutual co-
operation between QRP operators in six continents will
benefit the pursuit of achieving "the furtherest with
the leastest"!
For membership or further information contact the state
representative ¢ Rai Taylor, 25 I2th Ave West Moonah,
Tasmania 7009. Ph 727743 (Q02)
3
MAN'S CCNTACT WITH HIS ELECTRICAL ENVIRONMENT: (cont.)
The Electric Eel: Man also encounters electric shock
in the nature of a number of electric fish and rays.
The most powerful of these is the electric eel of South
POWER America. This fish belongs to the order that includes
the carp and catfish. In size it attains a length of
three feet and thickness of a man's thigh. The electric
organ of the fish develops a shock powerful enough to
stun the largest animal.
tions, v
Faraday made observations on the electric eel but it was
radio not until recent times that accurate measurements were
and made. Peak voltages as high as 650 have heen recorded,
although 400 Volts was about the average reading for
specimens 50 cms. in length. Eels 11 cms. long however,
cally only generated 50 Volts. The voltages were measured with
nilar the fish out of water, using an oscilloscope.
Electrocution: About the year 1767, Priestly tried to
resuscitate a kitten by artificial respiration by
blowing into the windpipe with a quill. Broadie, 1828,
spoke of restoring to life, guinea pigs apparently
killed by electric discharges by perseveringly inflating
their lungs with bellows.
Many experimenters have tried unsuccessfully to elect-
rocute frogs. The frog survives shocks and prolonged
passage of 10, 100, 1000 Volts and more. On the other
hand, the dog can be killed by an A.C. of 15 Volts at
6mA. applied to pass through the heart muscle for a few
seconds only.
It was quite apparent that the results of animal
experiments could not be applied directly to man, never
the less it is not surprising that electricity became
regarded as a'vital' force and has been used on
numerous occasions to cure many ailments of man.
Electrocution first became lawful in the state of New
York in 1888. One William Kemmler was the first
criminal to be executed by this means in the year 1890.
Thomas Edison was amongst those who considered that
this method of execution was no more humane than
hanging.
To be continued in the next issue:
by Maurice Potter VK7SA.
q. ‘
!'! SPECIAL CFFER!!
Soft_Touch Cassette Deck 3 $99 Save 3141
When you purchase any of the KENWOOD models TS-1%0/
53%0/660/830 or TS-930 during the months of July
Bl and Aucust from an authorised KENWOOD Dealer. For }
B only $99 you will receive a top quality $240
KENWOOD soft toucth cassette deck, ideal for
recordine and playback of "“off-air" information,
o8 slow scan pictures, etc. (Psst! Give it to the
XYL.) To receive this offer, just bring your
KENWOOD Australian warranty card, plus proof of
sale to TKA in Lane Cove together with $99. If
you are unable to personally collect, please
o =Q= oR—~~Jui-s
include an additional $6.50 freight. Offer
definitely closes 31st Auzust 1982.
" TAS: OBBV ELECTRONICS —83 CARELLA STREET, HOWRAH.HOGART 002)47667l
© GELSTON ELECTRONICS — 40 LAVENDER GROVE SUMMERHi 803
ADVANCED ELECTRONICS — 5A THE QUADRANT, LAUNCESTON (0 3) 31 7075
VK ELECTRONCS 21l MOUNT STREET,
BURNIE.
<& By Graeme Scott VK3ZR and
=i Sandy Brucesmith VK2AD.
NOISE BRIDGE UP TO:- 150MHZ
RANGE: - 0-100 OHMS
- +/- 100PF
SANDY BRUéfiSMITH, 110 ROSEMEAD ROAD, HORNSBY. N.S.W. 2077.
« PAPER-CHASING»
Just a point to remember when chasing awards, don't
forget that you are worth a point for the Tas. Devil
Award, so mention it when on the different nets. (see
s TS-130/
details below)
First up this month, one everybody should qualify
£ July
for easily:
ler. For }
L0
ZONE 29 AWARD: Freq.- any band or mode; Contacts- 25;
for
Require- log data only, verified by 2 full calls;
)
nation,
Cost- $1:00; Send to:- Awards Manager, Zone 29 Award,
to the
P.0O. Box N1002, G.P.O. PERTH, W.A. 6001.
your
ENDEAVOR AWARD (R.N.A.R.S.):
roof of
Freq.- 3610 Time- 10:30Z. Day- Monday.
). If
Contact- 15 stations with membership No's: Cost- $1:50
case
Send to: Mr. R. Baty (Endeavor Award Custodian),
2T
4% H.M.A.S. Australia Rd., Henley Beach South, S.A. 502¢
TAS. DEVIL AWARD:
section 1: M.F.-H.F. (a)Open- combination of bands anc
/or modes available to applicant.
(b)One band. (c)One mode. (d)All Novice.
Section 2: V,H.F. (a) & (b) as above, (c)Satellite
contacts- cross band to H.F. allowed if permitted under
licence terms. (d)Repeater contacts.
Claims:
Aust. inc. Tasmania. 50 contacts
Oceania, Antarctica 30 contacts
Asia, North America 20 contacts
Zurope, South America 10 contacts
Africa T contacts
V.H.F.- Applicants to contact 20 VK7 amateurs with at
least one station in each of the three W.I.A. branch
areas.,
Contacts made since Jan. 1l. 1978 will count.
Verification: Claim logs, with name, call, section,
station contacted, date, time, band and mode. To be
signed by applicant and two other amateurs. (No g.s.l.)
Cost: 10 IRCs overseas - 5 IRCs in Aust. or equivalent.
To: Awards Manager, P.C. Box 371D, Hobart, Tas. Aust.
7001.
Till next month, Good Hunting,
De Les. VKT7NHA
PI-BSEY___@ GELSTON COMMUNICATIONS *t
Electronics TWO WAY RADIO SALES & SERVICE
Postal Address: 40 Lavender Grove,
P.O. Box 1311, LAUNCESTON, TAS. 7250
LAUNCESTON, TAS. 7250 PHONE: (003) 443882
AGENT FOR VICOM - KENWOOD - YAESU
Contact us for your next purchase. All equipment pre-
checked on our professional test equipment. We service
what we sell.
MOVING SALE #** EVERYTHING MUST GO INCLUDING THE HOUSE
Complete with tower and antennas, will not separate.
This is a record breaking VHF site. #%** P ,Q,A,
WILLIS UIO solid state UHF transceivers complete with
crystals for VK7RAB and one simplex channel $165.00
HOXIN § wave 4.5dB gain mobile antenna with gutter
grip base and coax cable. $45.00
2 Meter Swiss quad, claimed I5dB gain $65.00
S CAN TV Keyboard working receiver part constructed
with 10" P7 tube AWA I2" AC/DC tv set. You can use the
EHT section for SSTV receiver. g£I35.00 the lot
AVANTI on-glass 3dB gain 2M antenna "No holes" £75.00
FM Stereo tuner to suit cartridge player 88-I08 Mhz
Clarion LE30I §30.00
I44 - 432 Varactor tripler $20.00
WA MRT25A hybrid car phones LO -Band suitable for
szckingAor use as solid sta;e receiver $25.00 ea
WA MRI valve car phone gI5,00
Pye hybrid LO-Band AM radios $I5.00
Valves in stock, 6146B, 6JS6, 12BY7, and many more.
Regency M400 30 ch scanner 450,00
EE?“‘L‘LOIN
coax switch £3%4.00 :
X Needle SWR meter 50 - I50 Mhz 20 or 200W £65.00
lcom 2M Multi mode mobile unit IC290A 540,00
Entennas CB twin trucker antennas 36.00
EMERGENCIES
From "200 Metres and Down" Author- Clinton B De Soto:
Tragedy swept New Zealand on February 3, 1931, when two of its most
prosperous towns, Napier and Hastings, were overwhelmed by earthquake
and fire. More than 350 residents were killed and thousands injured by col-
lapsing buildings. All telegraph and telephone wires were destroyed and
communication with the outside world was completely cut off. In his office in
Hastings when the first wrecking blow fell, C. E. Tyler, ZL2BE, escaped
through falling walls and buildings by the merest chance and reached home
to find his equipment completely wrecked. Rushing back into town, he re-
covered some batteries from a ruined radio shop and with apparatus from
his station, soon assembled a workable transmitter. Making contact with
Gisborne, Tyler gave news of the disaster and made an urgent appeal for
doctors, nurses and medical supplies, which were rushed by airplane to the
stricken towns. In Napier, ZL2GE did yeoman service. He managed to recover
a few “B” batteries from one of the radio stores before fire destroyed it and
with these under his arm bolted for home, where he reconstructed his trans-
mitter and soon made contact with Christchurch and Wellington. His station,
as were those of other amateurs, was taken over by the Post and Telegraph
aythorities for the handling of official traffic, with the amateur operators re-
tained in charge. Throughout New Zealand amateurs stood by; many stations
rendered vital assistance in handling all varieties of traffic. The work they
performed was, as always, a bright spot in the gloom of disaster.
Thanks to VK70W
. QSL BUREAU
- Cards handled by the QSL Bureau:
XEAR QUIWARDS 4NWARDS LOTAL
1979 24002 2335 47359
1980 24102 24960 49062
1981 22629 19918 42547
13
WHAT RADIO OFFERS TQO THE YOUNG MAN
—This article should be of interest because it was
printed 50 years ago! It was taken from the Feb., 193%2
issue of 'Modern Sets' edited by Mr. A. Box, a well
known technician in the early days. All the old timers
will remember articles by A.K.Box. This article may
very well have been written today, instead of 50 yrs.
ago J. Davis VK70W
ITHOUT doubt radio is the The new course at the Melbourne
most popular of all modern Technical School starts in February,
hobbies, The ever-changing 1932, when the first year class will
fashions of the science, and the con- take the following subjects:—
tinually new avenues of interest which Shop training in electrical fitting.
its progress opens up, combine to hold
Practical set>wiring.
the interest of the boy until he reaches
the stage where he starts to consider Instruction in the making and read-
his future. What is more natural ing of blue prints, in the choice of
than that he should look to his hobby materials for a job, and the prepara-
to provide him with a livelihood? So tion of estimates of material.
great are the ramifications of commer- A thorough grounding in elec-
cial radio with the associate field of tricity, covering ground up to the
talkies and the future field of tele- A.C. principles involved in radio
vision that the trained radio engineer’s communication.
prospects are rosy indeed. Even in This is the first year course, which
Australia, where a small population is intended for those students who have
prevents the rapid radio developments no thorough knowledge of electricity
which take place overseas, there is a as it-is applied to radio.
definite demand for highly trained en-
gineers. This demand will increase The Second Year Course.
vearly, particularly as the science de- The sccond year course is much
velops past the stage where the rule more involved, and aims at providing
of thumb methods of the radio old- the student with sufficient knowledge
timers will not suffice. o qualify as a competent radio en-
Unfortunately, it has been difficult gineer. Its syllabus includes:—
for the radio enthusiast to gain suf- Instruction in the principles and
ficient technical knowledge to qualify practice of the Morse code.
as an engineer., Beyond the rudiments Practical testing up to the
of the subject which he could learn A.0.P.C. standard (the standard set
from the various technical magazines, by the PAMLG’s department for the
and the small amount of practical ex- upcrauon of an amateur radio trans-
pcnence which his own cxpenmeutal mitting stauon)
energies permitted, it has, in the past, “This comprises two nights’ study
been impossible for the beginner to each week. The first night is given
progress far on the path of radio over to amateur testing (tests and
knowledge. | practice with equipment such as is
At the Melbourne Tech- used by the average radio amateur)
nical School a radio class has been and to code practice.
*Tarried on under the supervision of The second night will be given
Mr. McKay, and students of all grades over to practical testing, and to the
Rave been instructed in the funda- acquisition of a knowledge of mathe-
mentals of radio. Although the Mel- matics as applied to transmitting
bourne Technical School radio class circuits.
has been one of the best in existence The pew course represents
in Australia, its principals have con- the first serious attempt to lift the
sidered that the standard of knowledge standard of knowledge of those em-
which was imparted did not make suf- ployed in the radio industry to the
ficient provision for those students who level of the standard demanded from
were unfamiliar with the clectrical part workers in the electrical industry,
of radio. which pays good money to its highly
qualified men.
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WHAT IS YOUR PARTICULAR INTEREST IN RADIO?
This questionnaire was instigated by the North West
Branch, however your QRM committee considers the
information included is worthwhile collecting from
every member:
Please tick as appropriate:-
Main Interest 1. Operating 2.Construction
3. Other (please list)
Operating: Construction:
1. Contests 1. HF
2. Hagchewing 2. VHF/UHF
3. DX Hunting. 3. Microwaves
4, HF. 4, Satellite
5. VHF/UHF 5. Computers
6. Mode: CW SSB 6. SSTV/ATV/RTTY
FM ATV 7. Antennas
SSTV RTTY 8. Other (list)
7. Other (list)
Are you interested in group activities? YES / NO
Do you want more social activities in your Branch?
YES / NO
ANY COMMENTS?
We suggest Northern & southern members fill in and take
take to meeting or send to Secretary of their branch.
For N.W. members fill in and send to Box 194, Penguin,
or to any of the committee.
NAME: CALLSIGN:
ADDRESS:
9 5 % 0 9 0 0 0 9 6O C P G O P O OO P 0 OGP OO SV OGO UL G L GO N e
/EWE_\/E
5 PECDED TO
. REPLACE ALL YouRr
INNARPS wWIiTH A
SILICON CHIP.
BETA
ELECTRONICS
131 Bathurst Street Hobart Tasmania 7000
Telephone (002) 348232
SUPPLIERS OF ELECTRONIC COMPONENTS
SERVICE TO ALL MAKES OF RADIOS, TELEVISIONS,
MICROWAVE OVENS, ELECTRONIC ORGANS, VIDEO
CASSETTE RECORDERS, STEREO'S ETC.
AUTHORISED SHARP servICE AGENT
MODIFICATION TO CW FILTER of YAESU FT-7B.
take The CW filter of the FT-7B is an audio bandpass filter
centred on 800HZ. with a bandwidth of 80Hz. at 6dB down.
h.
in,
The filter is a conventional op-amp ovandpass filter.
As I have no use for a CW filter but could use a filter
for RTTY, I modified the filter to be centred on 2210
Hz. with a bandwidth of 200Hz. at 6dB down. This was
achieved by changing one resistor (R2606) from 180k to
78k and varying the 2k trimpot (R2601). Adjustment was
done with an a.f. generator and a CRO and checked on
air. Amateurs use 170Hz. shift on H.F. exclusively and
this unit provides good copy where none would be
possible without it. While the modification above applie
applies only to the 7B, any unit fitted with an op-amp
bandpass filter could be so modified for RTTY reception.
Footnote:If you are using an FT-7B, be aware that the
factory has issued modifications to the 50 W
pa unit to minimise the possibility of self-
destruction at high SWR's; for details contact
the writer. By Martin J. Fox VKT7MM.
17
VK7 YL HUNT: by Jan Harper VK7JM.
How many are there? Are you the only one? I've finally
found a VK7 YL operator! You are my first VK7 YL
contact!
These are typical of the gquestions and statements I
hear during H.F. operation. As for how many YL operators
there are in Tasmania, I'm afraid I don't have the
answer - consequently this current project began. To
date I have listed;
VK7CC Christine VK7ZSU/NSU Sue
VK7HD Helene VK7NSB Lucy
VK7YL Joy VK7NRG Sue
VK7JM Jan VK7NPK Pauline
VKT7Z2YL Joan :
Have I missed anyone? I would appreciate any more
information. Perhaps at a later date we may all meet
on 80 metres.
Info. to the writer; Box 1039, Launceston. 7250.
o Pt TEE 72cKER
A MG
CI e
gl
V/7' Don’s THEY Cxoks THHT ZiRD,
18.
FOR SALE
"ZENITH" SIG. GEN: 5 Bands 160 Khz to 25 Mhz. Low
: Leakage. $40 or offer considered. VK7TE 003-262297
WA r e n
YAESU FT 101E: DC to DC, Processor, 260 Watts input.
Mint condition $450.
YAESU FT 101E: same as above but with 6 meter Trans
Transverter FTV 650B and 5 element Yagi.
Mint condition $550.
YAESU FT S01 DM; Memory, DC to DC, Curtis Keyer,
Processor inbuilt. Mint $850.
ROTATOR model 502 CXX Emotator $100.
MICROPHONES - 5 only STC 4037C Studio quality, plugs
and cables $15 each.
w.M., Baily VK7UW ph. (002) 6413%20.
nupureErRIRRRERYRINN
Wanted to Buy
"WESTLAKE A.0.C.FP. Course Books": 1938 Admiralty
Handbooks Vol.l and 11 - Donation or loan on behalf
of handicapped student:
VK7TE (003) 262297.
nEnnnrnEnnErIRRRRIRRIIIERN
el
CHEAP 2 METRE Mobile on Repeater 8.
Jan Harper VK7JM (003) 391375.
-
C)7Zoonraker*’*—mnsmm SYSTEMS
WE’VE GOT WHAT IT TAKES!
If you're building your
own antenna, you need
good strong marine grade
tempered aluminium tubing
that will withstand the
elements,
We supply cut lengths in
imperial and metric sizes,
all sliding fits, and we've
got the range and the stocks
80 you won't have to wait.
. MOONRAKER AUSTRALIA PTY. LTD.
TELEPHONE: (002) 43 9733 2BWELLINGTON ROAD, LINDISFARNE,
TASMANIA, AUSTRALIA, 7015