This is the January 1921 issue of Radio News. The cover art is “Grandma Listens In.” Articles include an improved regenerative circuit, a honeycomb coil machine, an electro-dynamic receiver that can power a speaker (the moving-coil invention of P. L. Jensen), and building a simple transmitter.
Contents of this Issue:
- The Electro-Dynamic Receiver
- An Efficient Wave-Meter (Fred A. Burgess)
- How We Came to Have a V.T. Transmitter on the U.S. A. T. Princess Matoika (F. M. Daggett)
- Awards of $100 Portable Radio Prize Contest
- Comparison of Modulation Methods in Radio Telefony, Part 2 (A.S. Blatterman)
- Audio or Radio Frequency Amplifier (P.L. Welke)
- A Honeycomb Coil Machine That Works (Raymond Roof)
- A Regenerative Improvement (G.N. Garrison)
- A Complete Portable Set (D.R. Clemons)
- Thermionic Vacuum Tube as Detector, Amplifier, and Generator of Electrical Oscillations (W.H. Eccles)
- Ideas–Eighth Spasm (Thos. W. Benson)
- A.C. for V.T. Filament (Joseph G. Reed)
- The Radio Constructor: A Simple and Efficient Transmitter (Frederick J. Rumford, EE)
- High and Low Spark Notes for Amateur Transmitting (E. M. Sargent)
- Radio Digest
- Awards of $50 Title Prize Contest
- “Bad” Radio Business (Arthur H. Lynch)
- With the Amateurs
- Club Gossip
- Correspondence From Readers
- A Phony Phone (Volney G. Mathison)
- The Mystery of the Dampt-Undampt Messages (Herbert L. Moulton)
- Junior Section: Junior Radio Course: The Three-Element Vacuum Tube, 2nd Part
- Junior Constructor
- I Want To Know
- Opportunity Ad-Lets
Publisher: Experimenter Publishing Company, Inc.
Editor: Hugo Gernsback
Issue: Volume 2: Number 7; January 1921
Pages: 80
Size: 9″ x 12″
Digital edition © 2006 Curtis Philips. All Rights Reserved.