A Convenient Method for Referring Secondary Frequency Standards to a Standard Time Interval

A method is described for obtaining a convenient low frequency from a high-frequency standard by means of harmonic control of distorted wave oscillators (multi-vibrators). In the equipment described two such oscillators are employed, for convenience in arriving at a harmonic series of frequencies, b...

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Bibliographic Details
Published in:Proceedings of the IRE 1929-02, Vol.17 (2), p.252-271
Main Authors: Hull, L.M., Clapp, J.K.
Format: Article
Language:English
Subjects:
Broadcasting
Calibration
Earth
Frequency
Harmonic distortion
Laboratories
Oscillators
Radio control
Radio transmitters
Weight control
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Summary:A method is described for obtaining a convenient low frequency from a high-frequency standard by means of harmonic control of distorted wave oscillators (multi-vibrators). In the equipment described two such oscillators are employed, for convenience in arriving at a harmonic series of frequencies, based on 10-kc fundamental, as well as a frequency of 1 kc for operation of the clock motor, from a standard frequency of 50 kc. The conclusions based upon an experimental investigation of harmonic control of the distorted wave oscillators are given. Representative curves of the variations in frequency of the 50-kc standard for 10-day intervals are shown.
ISSN:0731-5996
0096-8390
2162-6626
DOI:10.1109/JRPROC.1929.221673