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 214
er was carried out, andit was while conducting these experiments that severalnew and improved receiving devices were built. Amongthem was the first step in the development of the electro- RADIO FOR EVERYBODY 195 dynamic receiver, now well known for its loud-speakingcharacteristics. This early type… … Special power amplifier, used in connection •with extra power-ful loud-speakers such as are employed for projecting the radio-phone entertainment in a large hall. This amplifier is used inaddition to the usual amplifier of the receiving set. did reproduce the voice with remarkable distinctness,…
Radio
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