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Heinrich Rudolf Hertz was able to provide airborne electromagnetic waves in an experiment confirming Maxwell's theory of electromagnetism.
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In 1890, Marcani was awarded British patent and in 1897 He established a radio station.
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Roberto Landell de Moura transmitted the human voice wirelessly, and could talk a half mile away.
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Marconi opened the world's first purpose built radio factory in Chelmford,England.
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The first radio news program was broadcast August 31st, 1920 by 8MK in Detroit, Michigan.
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In the early 1930s, single sideband and frequency were invented by amateur radio operators.
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Commercial television transmissions started in North America and Europe.
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1955, the newly formed Sony company introduced its first transistorized radio.
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1963 the color television was being broadcast.
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LORAN became the premier radio navigation system in the 1970s.
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In 1987 culminating the launch GPS, the U,S, Navy experimented it with satellite
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In November, WXYC became the first traditional radio station to announce broadcasting on the Internet
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Many U.S. radio participated in "Day of Silence"
