History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1946 04

P.01 - Front Cover

The Australasian Radio World

Registered at the G.P.O., Sydney, for transmission by post as a periodical.

Price, 1/-

Vol. 10 - No. 11; April, 1946

P.03 - Contents Banner

THE AUSTRALASIAN RADIO WORLD

Devoted entirely to Technical Radio

and incorporating

ALL-WAVE ALL-WORLD DX NEWS

VOL. 10 - APRIL, 1946 - No. 11.

P.03 - Publication Notes

Editor, Publisher, Proprietor — A. G. HULL, 336 Waverley Rd., East Malvern, Vic.

Short-wave Editor — L. J. KEAST, 3 Fitzgerald Road, Ermington, N.S.W.

Ham Notes By — D. B. KNOCK (VK2NO), 43 Yanko Av., Waverley, N.S.W.

Advertising Representative — W. J. LEWIS, 20 Queen St., Melbourne, 'Phone MU5154

Subscription Rates: 6 issues - 5/3; 12 issues - 10/6; 24 issues - £1; Post free to any address in the world.

Address for all correspondence: Australasian Radio World, 336 Waverley Rd., East Malvern, SE5 Victoria

Printed by Bridge Printery Pty. Ltd., 117 Reservoir Street, Sydney, N.S.W., for the proprietor of the "Australasian Radio World," Elizabeth St., Sydney (Footnote P.36)

P.03 - Contents

CONSTRUCTIONAL —

50-Watt Phone Transmitter . . . . 19

TECHNICAL —

Efficient Aerials for VHF . . . . 5

Improved Modulation Oscillator . . . . 7

Long Range Two Valver . . . . 9

Polysterene for Amateurs . . . . 11

My Own . . . . 15

The Proximity Radio Fuse . . . . 17

Crystals Will Not Amplify . . . . 21

30-Watt Modulation for Hams . . . . 23

Dismal Future for Radio Trade . . . . 25

Ham Notes . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary . . . . 31

New Stations . . . . 32

THE SERVICE PAGES —

Answers . . . . 34

P.03 - Editorial

EDITORIAL

There seems to be considerable disappointment expressed by our readers in regard to the lack of startling developments in receiver design. Not only our readers, but the public in general seems to feel that the amount of work done on radar and radio equipment for the forces should have brought to light something worthwhile for incorporation in post-war receivers. The commercial receivers now being placed on the market seem to be very little different from pre-war sets, except in regard to prices, these having gone up with the general trend of the money market. Neither do our own issues bristle with new ideas in technical development, as several of our readers have pointed out to us in no uncertain terms. Frankly, that is just how it is. The wartime developments will be very much in evidence when we get around to battery portables, with the new peanut valves and the lightweight minimax batteries; there is also plenty of scope for experimentation on the higher frequencies, but ordinary broadcast receivers appear to have reached a certain amount of stagnation. We don't expect this position to remain indefinitely and we have two outstanding developments in hand in our own lab., waiting for a bit more work to be done before they are released, but otherwise we feel that we can best fill in time by commercial organisation, keeping the needs of the experimenter before the manufacturers of components, and generally paving the way for the radio enthusiast to pursue his hobby under ideal conditions. A. G. HULL.