radiophone

A radiotelephone.

An instrument in which a sound is produced by the successive expansions and contractions of a body under the action of an intermittent beam of radiant heat thrown upon and absorbed by it.

An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.

a telephone using radio waves, rather than wires, to convey the voice signal.

a photophone

a radiotelephone

a telephone that communicates by radio waves rather than along cables