Frequency shift keyer
United States Patent 2480705
US Patent References:
Single-side-band system
- - 1773116

Modulating system and method
- - 1831516


Inventors:
Brian, Joseph M.
Publication Date:
08/30/1949
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Assignee:
RCA CORP
Primary Class:
375/306
International Classes:
H04L27/12; H04L27/10