# History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Issues/1940 10
## P.03 - Contents Banner

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

## P.03 - Contents

CONTENTS:
CONSTRUCTIONAL —
Reinortz Three . . . . 5
Itsy-Bitsy Mantel Model . . . . 13
Velco Hi-Fidelity Five . . . . 17
TECHNICAL —
Problems With 1.4 Valves . . . . 11
Oscillator Grid Currents . . . . 25
Intermediate Transformers . . . . 27
Don'ts for Battery Charging . . . . 38
SHORT-WAVE SECTION —
Review . . . . 30
Radio Engineer from Japan . . . . 30
The Month's Loggings . . . . 32
TRADE PARADE —
Calstan Portable Reviewed . . . . 28
Ultimate "World-wave" Model . . . . 29
New Trimmers for R.C.S. . . . . 36
Book Reviews . . . . 42
SPEEDY QUERY SERVICE —
Answers to Readers' Problems . . . . 41

## P.03 - Our Cover

The photograph shows the control room of the R.C.A. sound equipment at the Union Terminal railway station at Los Angeles, U.S.A.

## 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
Running a technical radio monthly if a happy job. It is such a friendly business from start to finish that it is hard to call it work. Of course, to a certain extent, it is a matter of birds of a feather flocking together. Being such a keen experimenter myself I find it a most interesting pastime to tinker about in my own laboratory and so I am well able to understand the enthusiasm of readers who have similar feelings and who like to tinker about with circuits and sets in the same way. Another welcome feature of the life is the mail. Every day there is a bundle of letters from readers who tell of what they are doing, of how they are getting along with the various jobs they are working on. Often they give suggestions for articles. These suggestions are invaluable. A good example of the assistance of these suggestions is shown in this month's issue. There are two articles which we feel sure are going to be of much interest and help to our readers, one dealing with grid current in converter valves and the other dealing with the difference in various intermediate transformers. I doubt if there is a hundred to one chance that I would have thought up the subject matter of these articles if they had not been suggested by readers. All readers, no matter whether advanced experimenters or just novices, are cordially invited to write to me. It is not always possible for me to answer each letter individually, and often enough I am so busy that I have to put aside the mail for three or four days before I get time to read every letter carefully. If, by any chance, you have written to me, but haven't received a reply, I do hope that you won't think that I am not interested or that I don't appreciate your kindness. I am pleased to notice that many readers have not forgotten Earl Read, who was formerly editor. Unfortunately Earl's name does not often appear at the heading of articles these days, as he is devoting practically all his time and energy to the business side of the paper. Earl, however, is still keenly interested, and often takes a few minutes off to peek at the mail and keep in touch with the activities of the members of the DX Club and of other readers. A. G. HULL.