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 194
appointed time, undergo an exam-ination which covers their proficiency in receiving andsending telegraph messages, as well as in the theory andpractice of radio. Operators licenses are of the amateurand commercial grade, depending on the proficiency of theperson examined. There is no fee or charge… … 176 RADIO FOR EVERYBODY secured by sending fifteen cents (not in stamps) to theSuperintendent of Documents, Government PrintingOffice, Washington, D. C. The laws regulating the operation of private radiostations in Canada are different in several respects fromthose in force in the United States.…
Radio
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