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 314
ustrated in our drawing. RADIO FOR EVERYBODY 295 This consists of two pieces of wood, which are fastenedtogether by means of an ordinary hinge, so that they maybe moved toward each other or drawn apart, as the casemay be. A small wooden strip or even a nail prevents thetwo pieces from coming into… … COPPER ORALUMINUM PLATES BUMPER HINGE Top view of book type of variable condenser, consisting: of two boards hinged together, two pieces of copper or aluminum sheeting, arranged as shown. connections. The capacity of such a condenser is in-creased by moving the plates close together and lessenedby…
Radio
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