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RADIO AGE for June, 1926,
The Magazine of the Hour 33
Radio Age Develops a
Golden Rule Receiver
Double Regeneration Has Been Utilized Without Radiation
By FRED HILL
FEELING there have been too many six and eight tube sets exploited and that not enough four tube receivers have been given proper attention, the writer has been experimenting for the past three months and is now in position to disclose a circuit arrangement which is believed to contain something more or less novel in its application and an economical, efficient receiver to build.
This receiver is called the Radio Age Golden Rule receiver principally because of the fact it will not radiate except under extraordinary conditions. Operated properly, even with oscillation in the detector circuit, the emission will not reach the antenna. Therefore we believe the name Golden Rule aptly describes the set.
Technically the circuit might legitimately be called the Double Weagant, since it is an elaboration of Weagant's original circuit, although adapted to double functioning of the regenerative portion of the circuit. It lends itself well either to double
(Associate Editor)
(Copyright 1926)
or triple regeneration, the latter form to be taken up and described in a forthcoming issue of Radio Age.
Multiple Regeneration
LANDON (V. D.) of the Westinghouse interests has recently done some experimenting with the multiple regeneration applied to tuned r. f. receivers, but such work we did not find very well adapted to single control, whereas with the double Weagant scheme to be outlined herein we found it possible to get down to single dial wave control for two circuits and single regeneration control for two regenerative circuits. The methods by which this was accomplished are detailed in this article, and presented by steps as taken during the experiments.
At first it appeared a good idea would be to use the antiregenerative effect originally used by Tuska in the superdyne, and combine it with the regenerative effect of the Weagant circuit. With that end in view the parts listed in another portion of
this article were secured and laid out on a breadboard for the sake of simplicity and conservation of time. In the first set the regenerative portion of the first torostyle was reversed, electrically, so when the regenerative condenser was turned, theoretically, there would be no feedback but rather an anti-regenerative effect. In practice it developed this method of having the first r. f. stage anti-regenerative and the detector stage regenerative, added a great deal to the instability of the set, and the anti-regenerative effect did not follow either a step behind or a step ahead of the regenerative effect of the detector plate coil. Consequently we had to abandon that scheme and next decided upon the following:
Connected Alike
BOTH the first and second torostyle plate windings were connected up for regenerative effect. Thus the r. f . stage was regenerative and so was the detector. However the r. f . stage had a tendency to slip into os