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 255
extremelywell insulated. A form of insulator devised by the author,suitable to this purpose, is made as follows: A thick-walledebonite tube, about 2 feet or 60 cms. in length, has a brass wiredown the centre ending in a loop at the bottom and a button atthe top. The top button is covered over with… … Fig. 2. 238 RA DIO TELEGRA PHY keep the ebonite as far as possible dry. One or two such insulatorsmay be used in series. Similar insulators are used to draw out thewires into desired positions. A closed or loop antenna may be constructed of two or moreantenna wires connected together at the top and…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
