An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 268
hotographic recorder; Accordingly, thereceiving apparatus may produce self-recording visible signals ontelegraphic paper tape, or audible signals by means of a telephone.In the first case, some kind of imperfect contact oscillation detectormay be employed in conjunction with a telegraphic relay,… … {By permission of the Amalgamated Eadiotelegraphic Co., Ltd. Fig. 11.—Poulsen Arc Apparatus. J^ADIG JEI.EGRAPHIC STA TIOXS 2?I The arran^oiiKMits for trlci^raiiliic re(e])ti(jn einiiloycd by Mar-coni in tlu! early clays of uircless lelej^rajjliy were as iolhjws:— The antenna, A, is eonnectetl to…
Radio · Telegraph, Wireless · Telephone, Wireless
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