Handicraft for handy boys; practical plans for work and play, with many ideas for earning money (1911)
Hall, A. Neely (Albert Neely), b. 1883- · Boston, Lothrop, Lee & Shepard Co · leaf 297
300 and wired up as shown inFig. 325 or Fig. 326, according to which form of detectoris used. With either receiving set you should be ableto hear commercial companies for a distance of a hundredmiles, with the proper aerial, and all amateur stations inyour vicinity. The arrangement of the… … QQQQQ- Battery10 dry cells in series-parallel Receiving Set Transmitting Set Fig. 326. —Complete Wiring Plan — when a Microphone Detector is used. purchased, as they are too complex to make. The out-fit consists of an induction-coil {spark-coil), spark-gap,battery, key, and switch. The…
Woodwork · Toys · Amusements
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