Frequency-Shift, Carrier-Current Equipment for Telemetering and Other Control Type Functions [includes discussion]

The frequency-shift crystal oscillator and the crystal discriminator, which are vital to the channel equipment utilized, are described here. The former is used to generate the carrier signal and the latter is used in the receiver to reform the transmitted intelligence.

[1]  G. Farnell,et al.  A Multichannel PAM-FM Radio Telemetering System , 1951, Proceedings of the IRE.

[2]  R. W. Beckwith.  A New Carrier-Current Frequency-Shift System for Use with Differential Protection of Transformer Banks , 1951, Transactions of the American Institute of Electrical Engineers.

[3]  G. W. Hampe,et al.  Power Line Carrier for Relaying and Joint Usage---Part I , 1949, Transactions of the American Institute of Electrical Engineers.

[4]  H. C. Thomas,et al.  A faster telemeter for carrier-current channels , 1948, Electrical Engineering.

[5]  R. W. Beckwith.  Characteristics of New Carrier-Current Equipment for Telemetering and Load Control , 1948, Transactions of the American Institute of Electrical Engineers.

[6]  P. W. Schirmer,et al.  Space Code Selector Supervisory System , 1949, Transactions of the American Institute of Electrical Engineers.