Radio broadcasting

Radio broadcasting is the transmission of signals, especially audio, to receivers using radio waves over a wide area. Listeners require a broadcast radio receiver to receive these signals. "Terrestrial" broadcasts come from stations on land, and include AM and FM ; and DAB (digital).

Audio is also broadcast via satellite in both digital and analog, originating from a satellite in orbit around Earth.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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