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7 ene 1920 año - AM radio takes off throughout the 20s

Descripción:

Pittsburgh radio station uses AM radio for news. RCA starts making radios in great quantities. Volume knob invented in 1924, and the jukebox in 1927

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Mixtape Anatomy Timeline

19 oct 2018

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7 ene 1920 año

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~ 105 years ago

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