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Period: to
Radio
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Heinrich Hertz detects and transmits radio waves
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Nikola Tesla wirelessly transmitted electromagnetic energy.
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Marconi establishes first radio link between England and France.
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American scientist R.A. Fessenden transmists human speech from radiowaves.
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Marconi transmits telegraphic radio messages from Cornwall to Newfoundland
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First radio transmission of music in Graz, Austria
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Marconi invents the directional radio antennae
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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 by radio of an escaping criminal
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First radio transmission from an airpane
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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
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March: WWJ, an AM station in Detroit, offers the University of Michigan broadcasting rights for extension lectures
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The federal radio commission is established
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A radio statio in NYC, WRNY begins to broadcast television shows.
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Fm Radio was pattened by Edwin H. Armstrong
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First pocket transistor radio
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First sony pocket radio