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[rey-dee-oh-tuh-leg-ruh-fee] /ˌreɪ di oʊ təˈlɛg rə fi/
the constructing or operating of radiotelegraphs.
1895-1900; radio- + telegraphy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for radiotelegraphy
  • It also began sending voice information to help pilots navigate, first by radiotelegraphy and then by teletypewriter.
  • Coast and ship stations transmitting radiotelegraphy.
  • In the early days of amateur radio, radiotelegraphy was the primary communication mode of all radio operators, including amateurs.
British Dictionary definitions for radiotelegraphy


a type of telegraphy in which messages (usually in Morse code) are transmitted by radio waves; its use is no longer widespread as it has been superseded by satellite technology Also called wireless telegraphy
Derived Forms
radiotelegraphic (ˌreɪdɪəʊˌtɛlɪˈɡræfɪk) adjective
radiotelegraphically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Encyclopedia Article for radiotelegraphy

radio communication by means of Morse Code or other coded signals. The radio carrier is modulated by changing its amplitude, frequency, or phase in accordance with the Morse dot-dash system or some other code. At the receiver the coded modulation is recovered by an appropriate demodulator and the code groups are converted into the corresponding symbols. In many instances the symbols are generated by a computer and modem rather than with a manual telegraph key

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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