History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1945 09

P.03 - Contents Banner
THE AUSTRALASIAN RADIO WORLD

Devoted entirely to Technical Radio

and incorporating

ALL-WAVE ALL-WORLD DX NEWS

VOL. 10. - SEPTEMBER, 1945 - No. 4.

P.03 - Publication Notes
PROPRIETOR — A. G. HULL

Manager - DUDLEY L. WALTER

Secretary - Miss E. M. VINCENT

Short-wave Editor — L. J. KEAST

For all Correspondence: City Office — 243 Elizabeth St., Sydney, Phone: MA2325

Office Hours — Weekdays: 10 a.m.-5 p.m. Saturdays: 10 a.m.-12 noon

Editorial Office — 117 Reservoir Street, Sydney

Victorian Advertising Representative — W. J. LEWIS, 20 Queen St., Melbourne, C1 'Phone MU5154

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

Service Departments — Back Numbers, 1 /- ea. post free; Reply-by-mail Queries, 1/- each

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
CONTENTS

CONSTRUCTIONAL —

A Camera Case Portable. . . . 15

Getting the Best from a Pick-up. . . . 17

TECHNICAL —

An Answer to the Cathode Follower. . . . 11

Theory Behind Proper Amplifier Design — Part 2. . . . 18

Probe Adapter for the V.T.V.M. .. . . 24

Future Appreciations of Radio. . . . 28

Starting in the Radio Business. . . . 5

Standard Valve Types for 1945. . . . 7

Victorian Amplifier Contest. . . . 7

SHORTWAVE REVIEW —

Notes from My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

P.03 - Editorial
EDITORIAL.

You will be interested in Mr. Langford Smith’s article in this issue in which he announces, on behalf of the Amalgamated Wireless Valve Company, the type numbers of the valves which are to be recommended as the standard or preferred-type valves for the immediate future. In his article Mr. Langford Smith gives a full explanation of the reasons behind the choice of these valves, giving the article added interest. After reading the article you will doubtless agree that the policy adopted is sound and logical. It is to be hoped, however, that the powers-that-be will appreciate that it is not reasonable to expect the local factories to produce every type of valve that the fertile mind can conceive, and make due allowance by making it easy for importers to land stocks of those particular valve types which cannot be produced locally on an economical basis. Valves such as the 6SN7GT and other twin types, for example, have many special applications and if the local experimenters are denied a chance to obtain small quantities of these valves it may tend to retard progress. It almost looks as though we need two classifications for considering the importation of valves, giving preference to the types which are not locally-made. The locally-made valves are reasonably satisfactory and doubtless they can supply the need for all standard types. Whilst on the subject of valves, we hope that a more legible branding of type numbers can be made, and that a handy abbreviation can be found for the mouthfuls like "6SN7GT." How about starting off a new run of serial numbers or letters say, a single type letter, such as "A," "B," "C," etc., stamping it into the bakelite base and painting on a colour code as well? A. G. HULL.