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Heinrich Hertz detects and produces radio waves
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the first radio was invented in 1895 by Guglielmo Marconi
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marconi invents first directional radio antenna
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Edwin armstrong patenets radio receiver circuit
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the first time music was played in 1920 by an unlicensed professor
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fm radio is born but only in mono
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television is Brin and there is a major reduction of radio listeners
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first small studio is built
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The number of radio receivers in the world exceeds the number of newspapers printed daily
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FCC approves FM stereo broadcasting, which spurs FM development.
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FM plans are finalized for WCBN
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In Paris an experimental digital FM transmitter begins operation.
