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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 131

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 131
rnedto the point connecting with 60 turns, and the secondswitch is turned to the eighth turn of wire. This arrange-ment is found in certain of the present-day receiving sets.Another means of varying the number of turns of aninductance coil is a sliding contact, which moves over thebared section of… … ntri G The simplest receiving setthat will give fair results,using a rough tuning coil,crystal detector, fixed con-denser and telephone. RADIO FOR EVERYBODY 113 the proper contact is afforded between slider and wire. There are several ways of connecting the tuning coiLa typical one being indicated…

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