# History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1950 10
## P.01 - Front Cover

The Australasian Radio World
Registered in Australia for transmission by post as a periodical.
1/6
Vol. 15 - No. 3; October 20, 1950

## P.03 - Contents Banner

THE AUSTRALASIAN RADIO WORLD
Devoted entirely to Technical Radio
and incorporating
ALL-WAVE ALL-WORLD DX NEWS
Vol. 15 - October, 1950 - No. 3

## P.03 - Publication Notes

Published by the Proprietor — A. G. HULL, Box 13, Mornington, Vic.
Short-wave Editor — L. J. KEAST, 7 Fitzgerald Rd., Ermington, N.S.W. Phone: WL1101
Representatives —
In Queensland: John Bristoe, Box 82, Maryborough, Q.
In New Zealand: H. Barnes & Co., 4 Boulcott Terrace, Wellington & S.O.S. Radio Ltd., 283 Queen St., Auckland
In England: Anglo Overseas Press Ltd., Chronicle House, Fleet St., London, W.1.
Distributed throughout the World by Gordon & Gotch (A/asia) Ltd.
Subscription Rates: 12 issues - 16/-; 24 issues - 30/-; To N.Z. and Overseas - 12 issues, 18/-; POST FREE
Address for all correspondence - Australasian Radio World, Box 13, Mornington, Vic.
Printed by The Clyde Press, 608 High St., Thornbury, for the Proprietor of the Australasian Radio World, A. G. Hull, Box 13, Mornington, Victoria (Footnote P.35)

## P.03 - Contents

CONTENTS
Home Truths About Amplifiers . . . . 5
Volume Compression . . . . 7
The Multi-Meter . . . . 11
Audio Frequency Amplifier . . . . 16
Peak Protection Devices . . . . 24
Tops in Tuners . . . . 25
Amateur Activities . . . . 27
Sapphires Hard on Records . . . . 31
Speedy Query Service . . . . 34

## P.03 - Editorial

PERSONAL . . .
A couple of years ago we ran a Special Data and Handbook Issue, complete with Buyers’ Guide. This issue proved an outstanding success, as is often brought home to us by the blank space on the back numbers' shelves. The compilation of such issues, however, calls for so much extra effort, so many more hours of time, that we haven’t been able to get around to tackling another. As most readers understand, we have a heck of a job to get even ordinary issues out on time. Things may be better in the near future, however, so here is a preliminary announcement of another special issue and with it an appeal for your co-operation............. Dealing first with the subject of data. How about dropping us a line if there is anything special you would like to see? Last time we ran the morse code, the international prefixes, the Q code, the broadcast station wavelengths, valve socket connections, circuit symbols, resistor colour codes, coil colour codes, and the frequency allocations. Can you suggest any more? Then there is a big series of constructional articles set down for future issues; quite a technical development programme, in fact. We know to start with a five-valve general purpose set, then a four-valve midget, but what next? Have you any ideas for the plan? What type of circuits seem to have been neglected lately? How many people would build a high-fidelity F.M. set on the off chance that the experimental F.M. transmissions are to become permanent? In fact, any suggestions you care to make will be doubly welcome at the moment, as big plans are being laid for the future. — A. G. HULL