An electronic device that generates and amplifies a carrier wave, modulates it with a meaningful signal derived from speech, music, TV or other sources, and broadcasts the resulting signal from an antenna.
One who or that which transmits something (in all senses).
A device, electronic or mechanical, that helps a person tune a musical instrument by showing the deviation of the played pitch from the desired pitch.
A musical.
A person who tunes a piano or organ.
The component of an audio system that receives radio broadcasts.
On a musical instrument, a peg or mechanical device that changes the tension, and hence pitch, of a string.