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 267
uctance coil, thisoscillation circuit being so arranged as to have a frequency ofsomething of the order of a million. The antenna is generallydirectly connected to this oscillation circuit and tuned to it. Thesignals are then made by short circuiting, by means of a key, afew turns of this… … o 2 ^ 73 p w suualjle le^^Milatiug resistances being intei[iosed. The arc isenclosed in a metal box with cooling flanges attached, clockworkor an electric motor being employed to rotate the carbon. In 250 RADIOTELEGRAP HY place of hydrogen or coal gas the vapour of alcohol is now usedto exclude the…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
