. The principles underlying radio communication . ., Current | vin Hadiotelephom JransmittinatheWoound of a* as m father] ]ModuJatea rradio-frequencyWave which can be received with Simple Detector. fiqZol Jlntenna Current in nadiotelephony Transmittinathe Sound of a as in father. Radio-frequency Wave soh/fodJated that Beat Reception is Required. 53904°—22- -33 511 512 ELECTRON TUBES. upper and lower boundaries of the modulated wave were pushedtoward the zero axis so that the points h, h just touch the zeroaxis. In the circuits commonly used in radiotelephony, if theamplitude
. The principles underlying radio communication . ., Current | vin Hadiotelephom JransmittinatheWoound of a* as m father] ]ModuJatea rradio-frequencyWave which can be received with Simple Detector. fiqZol Jlntenna Current in nadiotelephony Transmittinathe Sound of a as in father. Radio-frequency Wave soh/fodJated that Beat Reception is Required. 53904°—22- -33 511 512 ELECTRON TUBES. upper and lower boundaries of the modulated wave were pushedtoward the zero axis so that the points h, h just touch the zeroaxis. In the circuits commonly used in radiotelephony, if theamplitude of the modulating audio frequency becomes too greatthe radio-frequency oscillations entirely cease during a consid-erable portion of the cycle, and a marked distortion of speechoccurs; this is called overmodulation. The effect of overmodulation in an electron tube radiotele-phone transmitting set is similar to the effect during part ofthe cycle in an electron tube generating set having plate supplyof sine wave alternating current of perhaps 800 cycles. Thewave form for such a generating set is shown in Fig. 283, page500. During the intervals when the plate voltage is negative,the radio-frequency oscillati
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1922
