Radiotelegraphy

noun

1. Telegraphy in which messages are transmitted by radio instead of wire.
2. Telegraphy by means of electric waves; wireless telegraphy.
3. Telegraphy using the radiant energy of radio waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912.
4. The process and techniques of sending telegrams using radio waves rather than wires.
5. the use of radio to send telegraphic messages (usually by Morse code)