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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 149

An illustration from 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, leaf 149
one away withsliding arrangements in favorof rotary adjustments, the vario-coupler has become the stand-ard device for coupling theprimary and secondary circuitsof a receiving^ set. The vario- t 1 J. u J vt, Vario-coupler, which has coupler has a tube wound with taken the place of the old many… … RADIO FOR EVERYBODY 131 FT

Radio

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More pictures from 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

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