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Who invented the radio? | HowStuffWorks
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History of Radio timeline | Timetoast timelines
The incredible secret history of the radio - CNN Style
First Radio Station — Heartland Science
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Japan's First Crystal Radio | Sharp Corporation | Sharp Global
It all started as a lab experiment: A century ago, the broadcaster that became OPB was born - OPB
Who Invented Radio: Guglielmo Marconi or Aleksandr Popov? - IEEE Spectrum
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Heinrich Hertz invented the first radio transmitter and receiver – Historical articles and illustrationsHistorical articles and illustrations | Look and Learn
File:Marconi's first radio transmitter.jpg - Wikimedia Commons
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The Development of Radio | American Experience | Official Site | PBS
Sept. 29, 1920: Radio Goes Commercial | WIRED
jan 1, 1895 - First Radio Invented. (Timeline)
Who invented the first portable radio? What were they used for? - Quora
History of radio - Wikipedia
Radio revolution: When was the first radio invented? | by Radio Fidelity | Medium
Listening to Music in Your Car? – What a Great Idea! - Davison
Who Invented Radio: Guglielmo Marconi or Aleksandr Popov? - IEEE Spectrum