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Radio Oklahoma Network, a subsidiary of Griffin Communications; Radio PA Networks of Pennsylvania, a subsidiary of WITF Enterprises. South Carolina Radio Network, a subsidiary of Learfield Communications. Tennessee Radio Networks, a subsidiary of iHeartMedia. Texas State Network, a subsidiary of Entercom.
Radio broadcasting has been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In 1923, 1 percent of U.S. households owned at least one radio receiver, while a majority did by 1931 and 75 percent did by 1937.
Media in category "Radio broadcasting companies of the United States" The following 4 files are in this category, out of 4 total. Galaxy Media Partners.png 250 × 125; 5 KB
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
In 1969, the company name was officially changed from Radio Corporation of America to the RCA Corporation, to reflect its broader range of corporate activities and expansion into other countries. At the end of that same year, David Sarnoff, after being incapacitated by a long-term illness, was removed as the company's chairman of the board.
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history .
same name as well Recife, Pernambuco, 1919 AM 720 kHz Made the first radiophonic broadcast in Brazil, but the first radio officially acknowledged was Rádio Sociedade do Rio de Janeiro (actually, Rádio MEC). Also, it is one of the oldest stations in the world. [List entry too long] First Australian experiment in the broadcast of music: n/a
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