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 505
be obtained withheterodyne reception. The heterodyning of course destroys thepurity of the tone emitted by the transmitter, but gives muchbetter reception than a crystal detector or simple tube detector.If a low frequency, such as 60 cycles, is used, the received signalcan be improved by using a… … WAVE. FORM OF OUTPUT CURRENT FROM TUBE. TRANSMITTER HAVING PLATE. SUPPLIED WITH 80O CYCLE! SINE WAVE ALTERNATING CURRENT Fio283 It should be noted that this alternating-current modulationof plate supply gives only one train of oscillations per cycle,corresponding to the intervals when the plate is…
Telegraph, Wireless · Radio
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