radiotelegraphy

English Thesaurus

1. the use of radio to send telegraphic messages (usually by Morse code) (noun.artifact)

hypernym	:	radio, wireless,
definition	:	a communication system based on broadcasting electromagnetic waves (noun.artifact)

2. telegraphy that uses transmission by radio rather than by wire (noun.communication)

hypernym	:	wireless,
definition	:	transmission by radio waves (noun.communication)