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 358
mitter apparatus.Fig. 7 shows the multiple microphone arrangement, the mouthpieceagainst which speech is made branching out into a number ofparallel pipes, at the end of each of which is a carbon microphonemade as described, such a transmitter being suitable for radio-telephony over 250 miles. By… … [Reproduced from The Electrician hy permission of the Froprie ors. Tig. 9.—General View of the Poulseu Transmitting Apparatus forRadiotelephony. undamped oscillations in the sending antenna, the oscillationscreated by the alternator are transferred to the antenna throughan oscillation transformer.…
Radio · Telegraph, Wireless · Telephone, Wireless
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