Radio for everybody; being a popular guide to practical radio-phone reception and transmission and to the dot-and-dash reception and transmission of the radio telegraph, for the layman who wants to apply radio for his pleasure and profit without going into the special theories and the intricacies of the art (1922)
Lescarboura, Austin C. (Austin Celestin), 1891- · New York, Scientific American publishing company [etc.] · leaf 228
ed for coveringdistances up to 100 miles with a 10-inch spark coil, andback in the crude beginnings of amateur radio most ama-teurs made use of a spark coil and the plain aerial arrange-ment here shown. In those days the transmitters weregaged by the inch; that is to say, the amateur talked ofhis… … The simplest form of damped radio transmitter, consisting: ofa po-wer source, telegrapli key for making: long: and shortsignals of the radio code, a transformer for stepping: up thecurrent, a spark grap, and the aerial and the g:round. In thisarrangement, known as the plain aerial transmitter, the…
Radio
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