The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 570
uence the surgings in the aerial andthe transmitted electro-magnetic waves. Poulsen has since then succeeded in transmitting speechbetween Copenhagen and Berlin, a distance of 290 miles. Thetransmitter used was a multiple one made up of 12 solid-backsconnected in parallel and so arranged that all… … Fig. 491.—Stnging Axe Method of Transmission cepted by another aerial at the distant station, and varioustypes of receivers are used in connection with this aerial forconverting such received etherial waves into conductedelectrical waves or currents, and then into corresponding soundwaves. Liquid…
Telephone
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