# History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1940 11
## P.03 - Contents Banner

The Australasian Radio World
Incorporating the
All-Wave All-World DX News
Vol. 5 - NOVEMBER, 1940 - No. 6

## P.03 - Contents

CONTENTS:
CONSTRUCTIONAL —
Trans-Port . . . . 5
Straight Four . . . . 13
All-wave Oscillator . . . . 19
Criterion Crystal Set . . . . 24
TECHNICAL —
Direct-coupled Phase-changers . . . . 9
Further Championship Circuits . . . . 12
How to Use a Morse Key . . . . 25
H.T. from Accumulator . . . . 27
SHORT-WAVE SECTION —
Review . . . . 29
This Month's Loggings . . . . 30
Short-wave Stations of the World . . . . 33
TRADE PARADE —
Mardel Fan . . . . 38
Newcomer to Delta Range . . . . 38
Morse Combination Units . . . . 38
Expansion at John Martin's . . . . 39
New Dials by Radiokes Pty. Ltd. . . . . 39
Transverse Cutting Gear . . . . 39
Power Rheostats by I.R.C. . . . . 39
A.W.A. Modulated Oscillator . . . . 39
SPEEDY QUERY SERVICE —
Answers to Readers' Problems . . . . 41

## P.03 - Publication Notes

The "Australasian Radio World" is published monthly by A. G. Hull. Editorial offices, 117 Reservoir Street, Sydney, N.S.W. Telephone FL2842. Cable address: "Repress," Sydney. Advertisers please note that copy should reach office of publication by 14th of month preceding that specified for insertion.
Subscription rates: 1/- per copy, 10/6 per year (12 issues) post free to Australia and New Zealand.
Printed by Bridge Printery Pty. Ltd., 117 Reservoir Street, Sydney, N.S.W., for the proprietor of the "Australasian Radio World," 117 Reservoir St., Sydney (Footnote P.44)

## P.04 - Editorial Notes

PERSONAL
In step with the tremendous increase during the past few years in the number of licenses taken out annually in the Commonwealth, the radio service business has advanced to the position where it now must be recognised as a separate industry. The task of keeping over a million receivers in order is a tremendous one; that alone would make the men who perform it a force to be reckoned with, but there are other reasons why servicing as a profession is becoming increasingly more important. Of every one in the chain between set manufacturer and buyer, the serviceman has perhaps the closest and most constant contact with the latter. Once he has obtained the confidence of his clients as a result of his experience and integrity, his recommendations regarding valve or set purchases are generally followed without question. Manufacturers who realise this can build up valuable goodwill among servicemen, and thus among listeners, simply by "servicing the serviceman" — by keeping him supplied with plenty of service data on their receivers and valves. A second reason why radio servicing is now forging ahead is that the serviceman of to-day must of necessity be equipped with a wide and thorough knowledge of radio from both the practical and theoretical angles. With improved methods of manufacturing, sets are being made more and more "breakdown proof," but against this they are far more complex than they were a few years ago, which means that service calls per set average little fewer to-day than they did before the advent of dual-wave receivers, with their host of modern refinements. This increase in complexity also means that the day is well past when radio repair work can be performed by experimenters or electricians with a voltmeter, soldering iron, and a pair of pliers. Elaborate service equipment, plus a thoroughly sound and up-to-date knowledge of radio are essentials for anyone in the service game to-day. The equipment needed is expensive, and the training required means years of concentrated and costly study, but for good men the opportunities offering are endless. As an established profession, radio servicinq is only in its infancy. A. G. HULL.