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 155
receiver. When your receiving set is tuned to receivea certain transmitting set it is in resonancewith the other station. A simple way to ex-plain this is to say that the wave lengths arevery nearly the same. This is accomplishedby adding or subtracting a certain number ofturns of wire in the coils… … AMATEUR RADIO 135 sired signals only. However, these sets arevery expensive and the operator has to be anexpert. The average amateur set will nottune sharp and a great deal of trouble has beencaused by some beginners filing complaintsabout some amateur spark transmitter. Usu-ally the spark…
Radio · Amateur radio stations
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