Radio is the technology of communicating using radio waves. ... Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz).
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The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna ...
Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience.
Radio frequency power transmission is the transmission of the output power of a transmitter to an antenna. When the antenna is not situated close to the ...
A radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna. Radio waves are electromagnetic waves with ...
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, ...
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public.
A radio communication station is a set of equipment necessary to carry on communication via radio waves. Generally, it is a receiver or transmitter or ...
FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American ...
Digital radio is the use of digital technology to transmit or receive across the radio spectrum. Digital transmission by radio waves includes digital ...