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7 янв 1920 г. - AM radio takes off throughout the 20s

Описание:

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 окт 2018

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Дата:

7 янв 1920 г.

Сейчас

~ 105 г назад

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