History of broadcasting

The development of transmitting audio and audiovisual programs to dispersed audiences, from early radio services to modern broadcast media.

Guglielmo Marconi: An Italian inventor and entrepreneur who developed practical long-distance wireless telegraphy. His wireless work helped establish the technical foundations for radio transmission.
Amplitude modulation: A method of radio transmission that encodes information by varying a carrier wave's amplitude. AM enabled early radio services to carry speech and music over broad areas.
Lee de Forest: An American inventor whose Audion vacuum tube amplified weak electrical signals. Signal amplification helped make practical radio reception and broadcasting possible.
Radio news: The collection and broadcast of news reports and analysis through radio services. Radio news made timely reporting available to mass audiences, especially before television.
Golden Age of Radio: A period when radio was a central medium for entertainment and information, especially from the 1930s to the 1950s. Its dramas, variety shows, and news shaped daily life before television displaced radio's dominance.
Reginald Fessenden: A Canadian inventor who demonstrated early transmissions of voice and music by radio. His experiments anticipated radio broadcasting beyond Morse-code telegraphy.
Frequency modulation: A method of radio transmission that encodes information by varying a carrier wave's frequency. FM offered clearer audio and became a major alternative to AM broadcasting.
David Sarnoff: An American broadcasting executive who led the Radio Corporation of America and NBC. He advanced the commercial network model that dominated American radio and television.
Radio drama: Fictional storytelling written or adapted for performance through radio sound. Drama demonstrated how broadcasting could create vivid experiences without images.
Radio propaganda: The use of radio broadcasts to influence political beliefs and mobilize populations. Governments recognized broadcasting as a powerful instrument of persuasion.

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Television studiesRelated: Television studies inherits histories of broadcasting that explain its institutions and public role.