The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 526
Modulating System l^l|l|||Ki Generating St^t Tlgl^i Circuit for Radiotelephone Transmitter. ^modulation by Variation of Power Input of Generator Tube.
Telegraph, Wireless · Radio
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