Amateur radio : how and why of wireless with complete instructions on operation of receiving outfits (1922)
Grainger, Maurice J · New York : James A. McCann · leaf 109
ne trans-mitting by means of vacuum tubes. In otherwords, but for Armstrong you could not getthe wonderful musical programs and otherforms of entertainment that are now dailybroadcasted by hundreds of stations through-out the United States. Certainly an arc transmitter could be used, but the sounds… … AMATEUR RADIO 89 conversation can be carried on without theArmstrong principle being employed; eventhe modern multiplex form of wireless teleg-raphy and telephony must pay tribute to Arm-strong. Edwin H. Armstrong is a young American.The story of his discovery is one of the greatstories of radio.…
Radio · Amateur radio stations
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