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Radio Sounds

Radio Sounds
The first commercial radio broadcast was transmitted on November 2, 1920 when the Harding-Cox presidential election was broadcast by Westinghouse Electric and Manufacturing Company in Pittsburgh. The emission of radio waves is regulated by law, coordinated by the International Telecommunication Union, which allocates frequency bands in the radio spectrum for different uses.
See also: Radio Radio Radio, Radio Radio, Radio broadcasting, Canadian Broadcasting Corporation, HD Radio, and Radio wave.