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Heinrich Hertz detects and produces radio waves.
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First radio transmission of music at Graz, Austria.
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First radio program of voice and music broadcast in the U.S.
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Radio communications gain publicity when the captain of the Montrose alerts Scotland via radio of an escaping criminal.
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Armstrong develops the superheterodyne radio receiver. The principle for this receiver is the basis for all radio receivers now in use.
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Shortwave radio is developed, RCA is founded.
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KDKA broadcasts the first regular licensed radio broadcast out of Pittsburgh, PA.
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RCA starts operating Radio Central on Long Island. The American Radio League establishes contact via a shortwave radio with Paul Godley in Scotland, proving that shortwave radio can be used for long distance communication.
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the juilliards college opened in 1924
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Electric guitar makes its debut.
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WCBN hosts the first National Association of College Broadcasters.
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Billboard debuts its Hot 100 chart.
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United States radio stations begin broadcasting in stereophonic sound.
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U-M President Robben Fleming urges that WCBN should be used only for educational purposes and restricted to students only.
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In the US, FM radio stations begin to use the RDS already in place in Europe.
