November 20, 1920 October 11 (Gengshen years), the world's first radio station.


November 1920 the world's first radio station - KDKA Radio officially launched
Since November 20, 1920 in Pittsburgh KDKA Radio officially launched, expand after the world's broadcasting history, with advances in technology and the human pursuit of a higher quality of life, scientists continue to study how to improve the broadcast sound quality, improve the broadcast quality of service. Began in the 1980s, due to the ever-changing digital technology, radio technology into the revolutionary era of digital broadcasting technology.
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