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- The history of radio can be summarized as follows12:
- August 31, 1920: The first known radio news program was broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan.
- October 1920: Westinghouse in Pittsburgh, Pennsylvania became the first US commercial broadcasting station to be licensed when it was granted call letters KDKA.
- From about 1920 to 1945, radio developed into the first electronic mass medium, monopolizing “the airwaves” and defining, along with newspapers, magazines, and motion pictures, an entire generation of mass culture.
- About 1945 the appearance of television began to transform radio’s content and role.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.31 August 1920: The first known radio news program was broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan. October 1920: Westinghouse in Pittsburgh, Pennsylvania became the first US commercial broadcasting station to be licensed when it was granted call letters KDKA.
en.wikipedia.org/wiki/Timeline_of_radioFrom about 1920 to 1945, radio developed into the first electronic mass medium, monopolizing “the airwaves” and defining, along with newspapers, magazines, and motion pictures, an entire generation of mass culture. About 1945 the appearance of television began to transform radio’s content and role.
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The invention of amplitude-modulated (AM) radio, which allows more closely spaced stations to simultaneously send signals (as opposed … See moreWikipedia text under CC-BY-SA license Brief History Of The Radio From 1900 To 2023 Evolution - Radio4All
- In 1900, the first wireless transmission of the human voice was accomplished, thanks to Roberto Landell de Moura. He had undertaken a public exhibition before some journalists on the 3rdof June that year. Everything happened somewhere in Brazil, Sao Paulo. The signal was able to travel up to 8 kilometers.
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