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RADIO AGE— "THE MAGAZINE OF THE HOUR'
RADIO AGE
The Magazine of the Hour
(Established March, 1922)
Volume 3
FEBRUARY, 1924
Number 2
CONTENTS
Page
The Reinartz Audio Regenerator 5
By Felix Anderson.
A One Tube Heterodyne. 7
By John B. Rathbun.
Analogy of the Receiving Antenna 9
By Frank D. Pearne.
Interference Rejectors 11
By Felix Anderson.
A New Tuning Unit 15
By Frank D. Pearne.
How to Avoid Interference -.21
By J. V.L. Hogan.
The Superdyne Receiver ...25
How to Make a Battery Charger 27
What the Broadcasters Are Doing 29
Pickups and Hookups By Readers.. ....34
Troubleshooter 40
Corrected List of Calls 43
With Wave Lengths.
Radio Age is published monthly by RADIO AGE, Inc.
Publication office, Mount Morris, 111.
Editorial and Advertising Offices, Boyce Building,
500 N. Dearborn St., Chicago
Frederick Smith, Editor Frank D. Pearne, Technical Editor M. B. Smith, Business Manager Louis L. Levy, Circulation Director
Western Advertising Representatives
BRUNS & MACDONALD
First National Bank Building, Chicago
Eastern Representatives
E. V. HEVEY & COMPANY
17 West 42nd Street, New York City
Telephone, Longacre 1698
Advertising forms close on the 15th of the month preceding date of issue
Issued monthly. Vol. 3, No. 2. Subscription price $2.50 a year.
Entered as second-class matter September IS, 1922, at the post office at Mount
Morris, Illinois, under the Act of March 3, 1879
Copyright, 1924, by RADIO AGE, Inc.
70,000!
AS THE forms for the February issue are about to close it looks as if 70,000 would be the minimum press run for this month. Dealers' orders are still coming in as this is written and most of them call for substantial increases over January. We are likely to need 75,000 copies.
One Chicago magazine shop sold out its RADIO AGE supply three times on January 7 and when our distributor reached the store with a fourth consignment of the January issue, thirty customers were waiting for their "Magazine of the Hour." That little loop store sold 900 copies in one day.
"Sold out clean" said a telegram from Montreal, almost immediately after receiving the January issue. Pawtucket, Rhode Island, next came in with a telegram asking that their original order be duplicated. Long distance telephone calls, telegrams, letters and personal visits from dealers steamed things up until the business manager had to telephone the printing house to put the forms all back on the presses for a second run.
We told you on this page of the January issue that this was distinctively a reader's magazine and we explained how we had attained a prosperous success, practically on circulation alone. Now we are going to tell you what made that January issue sell like peanuts at a circus.
It was the article on "Tuning out Interference." It was the best and most comprehensive article on the subject thus far published. E. F. McDonald, Jr., president of the Zenith Radio Corporation, broadcast some kind words about the article from Zenith-Edgewater Station WJAZ and other stations followed his example. That announcement over the air introduced us to more than 20,000 new readers. Their letters have been coming in — and their subscriptions. We thank the broadcasters and the broadcast listeners. We promise to reciprocate by continuing to do our best to print a good radio magazine.
—Editor, RADIO AGE