History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1939 06

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Front Cover

The Australasian Radio World

June 10, 1939; Vol. 4 - No. 2; Price, 1/-

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

Cover Photo: The Home of Rola (See Page 8.)

Highlighted Contents: Portable Valve Tester: Home-Made Microphone: "Radio World" Economy Fidelity Amplifier: 139 Companionette: Astra Dual_Wave Six: World S.W. News: Hourly Tuning Guide

P.02 - Editorial Notes

Editorial Notes . . .

Nil

P.02 - Contents Banner

The Australasian Radio World

Incorporating the

All-Wave All-World DX News

Managing Editor - A. Earl Read, B.Sc.

Vol. 4. - JUNE, 1939 - No. 2.

P.02 - Contents

CONTENTS:

The "Astra Dual-Wave Six" . . . . 3

The "Ultra DX Three" . . . . 6

New Ever Ready Batteries For 1.4-Volt Portables . . . . 8

Fight For Amateur Bands . . . . 10

Simple Portable Aerial . . . . 11

This Thing Called "Q" . . . . 12

More About The 1939 Companionette Three . . . . 15

A Portable Valve Checker . . . . 17

More Sets From Back Numbers . . . . 21

A.O.C.P. Questions And Answers . . . . 22

Experimenters - Get Down To Ultra Shorts . . . . 24

Installing An Extension Speaker . . . . 26

A Test-Bench Multi-Vibrator . . . . 28

Making A Reiss Microphone . . . . 31

Leaves From A Serviceman's Diary (3) . . . . 32

The Economy Fidelity Amplifier . . . . 33

What's New In Radio . . . . 36

Shortwave Review . . . . 41

Hourly Tuning Guide . . . . 46

P.02 - Publication Notes

The "Australasian Radio World" is published monthly by Read Publications. Editorial offices, 214 George Street, Sydney, N.S.W. Telephone BW6577. 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., 214 George Street, Sydney, N.S.W., for the proprietors of the "Australasian Radio World," 214 George St., Sydney (Footnote P.48)

P.04 - Change in Publication Date

Change In "Radio World" Publication Date New Scheme Will Give Commonwealth-Wide Distribution By First Of Month. Readers are advised that the next issue of "Radio World," to be published on July 15, will be the July-August issue. The following issue, published on August 15, will be the September issue, and this arrangement will then be maintained subsequently. In this way, by publishing each issue a fortnight or so before its actual date of publication, readers throughout the Commonwealth should receive their copies on the first of the month of issue, while subscribers whose copies are mailed direct should receive the magazine a few days earlier. This plan is being adopted in response to enquiries from inter-state readers, asking if some new arrangement could be adopted whereby they could receive their copies earlier than a fortnight or so after date of publication, which for the past ten issues has been the tenth of the month. From now on readers will still continue to receive the "Radio World" on approximately the same date of the month as in the past, but from the September issue onward, the "Radio World" will be distributed throughout the Commonwealth by date of publication.