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Radio Broadcast
Willis K. Wing Associate Editor
Arthur H. Lynch Editor
John B. Brennan Technical Editor
AUGUST, 1925
Cover - - - - - From a Painting by D. K. Hutchinson
The Social Side of Radio - - - - - Frontispiece 450
From Figures to Fame - - - - - - Myra May 451
How to Build a Two-Stage Detector-Amplifier Unit John B. Brennan 458
The Listeners' Point of View ------ Kingsley Welles 469
The Revolution in the Art of Teaching Frederick P. Mayer 477
The March of Radio - - - - - J. H. Morecroft 483
For the Radio Beginner - - - - Zeh Bouck 492
Adding a Bulb to the Beginner's Crystal Set What "Detection" Means and How It Works References in Good Radio Text Books Radio Terms Defined
Wavelength or Frequency — Which? ----- J. H. Morecroft 498
As the Broadcaster Sees It---------- Carl Dreher 500
Drawings by Franklyn F. Stratford
An Induction Loud Speaker --------- C. W. Hewlett 508
Making a "Super-Het" From Your Neutrodyne or Single-Circuit Set - - - - - - - - A. O'Connor 516
Coils and Condensers -------- By the Laboratory Staff 524
More About Radio Broadcast's Phonograph Receiver
Arthur H. Lynch 529
"Now, I Have Found ..." - - - - - - 535
Neutralizing the Roberts Knock-out
A Simple and Efficient Form for Winding Your Own Coils
R. F. Transformers and High Plate Voltage
Helps for Constructors
Winding Coils on "Air"
A Plate Supply from 1 10 Volts a. c.
Rheostats and Verniers Controlled With Horizontal Dials A Lightning Arrester Made from a Spark Plug Hard Rubber Spiderwebs for the Roberts Receiver
The Grid - - - 540
Home Made Coils for the Roberts Receiver
The Roberts Neutralization Method Applied to the Neutrodyne
Placing of Rheostats Precaution in Charging B Batteries
Oscillation of the Hanscom "Super' ' on low waves
A Transmitter-receiver Circuit
Methods of A and B Battery Connection
One Method of learning the Code
* Copyright. 1925, in the United States, All rights
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