radio transmitter(n = noun.artifact) - transmitter that is the part of a radio system that transmits signals;
is a kind of sender, transmitter
is a part of radio, wireless
has particulars: spark transmitter

carbon transmitter, clock radio, father of radio, omnidirectional radio range, push-button radio, quasi-stellar radio source, radio, radio aerial, radio announcer, radio antenna, radio astronomy, radio beacon, radio beam, radio brightness, radio broadcast, radio chassis, radio compass, radio control, radio detection and ranging, radio emission, radio frequency, radio interferometer, radio link, radio news, radio noise, radio observation, radio operator, radio radiation, radio receiver, radio reflector, radio set, radio signal, radio source, radio spectrum, radio station, radio technician, radio telescope, radio wave, relay transmitter, satellite transmitter, spark transmitter, television transmitter, transmitter