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Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based radio station, while in satellite radio the radio waves are broadcast by a satellite in Earth orbit.
Radio stations in United States have evolved since their early twentieth-century origins. In 1920 8MK started operations in Detroit; after it, thousands of private and public radio have operated in the United States.
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Radio stations attractiveness to advertisers began to change from a "mass medium" to one shaped by demographics, although to a lesser degree than television; radio formats began to be targeted toward specific groups of people according to age, gender, urban (or rural) setting and race, and freeform stations with broad playlists became uncommon ...
RTÉ Radio 1 (current affairs and speech based broadcasting); RTÉ 2fm (rock and pop music); RTÉ lyric fm (classical music plus jazz, world music and arts); RTÉ Raidió na Gaeltachta (the Irish language station targeted at the Gaeltacht, and the Irish language-speaking community of Ireland)
A. List of radio stations in Alabama; List of radio stations in Alaska; List of AM Expanded Band station assignments issued by the Federal Communications Commission on March 17, 1997
This category contains a collection of lists of radio stations, mostly organised by geographical region. Subcategories This category has the following 3 subcategories, out of 3 total.
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 transceiver , an antenna , and some smaller additional equipment necessary to operate them.