Quartz Control for Frequency Stabilization in Short-Wave Receivers

For the purpose of stabilizing short-wave reception, experiments were made using quartz control in receivers. It was found that the use of a crystal which produces audible beats with the frequency of the transmitter quartz is practically impossible. In fact, the quartz-controlled oscillating detecto...

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Bibliographic Details
Published in:Proceedings of the IRE 1930-02, Vol.18 (2), p.307-320
Main Authors: Von Handel, P., Kruger, K., Plendl, H.
Format: Article
Language:English
Subjects:
Aircraft
Airplanes
Communication system control
Crystals
Detectors
Frequency
Ignition
Laboratories
Radio transmitters
Temperature
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Summary:For the purpose of stabilizing short-wave reception, experiments were made using quartz control in receivers. It was found that the use of a crystal which produces audible beats with the frequency of the transmitter quartz is practically impossible. In fact, the quartz-controlled oscillating detector caused too great a decrease in the tone volume, while in the case where a separate quartz-controlled heterodyne was used, the effect of temperature on the frequency of the crystals caused disturbances. In order to solve this problem, a method is described in which the superposition of the frequencies of the transmitter quartz and the receiver quartz produces an oscillation of high frequency. This intermediate frequency corresponds to a long wave and is made audible in a normal oscillating detector.
ISSN:0731-5996
0096-8390
2162-6626
DOI:10.1109/JRPROC.1930.221997