Definition of radio

Electromagnetic waves longer than about 0.3 mm (frequencies lower than about 1 THz). Radio is used to transmit a wide variety of signals, using various frequency ranges and types of modulation, such as AM and FM broadcasts, microwave relays, and television broadcasts.

A part of a device that converts sound waves or mechanical movements into corresponding electric waves or impulses.

A feature that provides unending stream of music based not on the user’s library, but on an artist or song selected by the user.

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