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the antenna made electrical waves into radio waves
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italian inventor that sent the first radio signal. not sure if he was the actual inventer or just a good PR
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a vacuum tube that amplified signals created by Lee de forest or Reginald fessenden
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back then the marines bought marconi's invention. if it wasnt for the radio there would have been no survivors on the titanic.
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the first radio station was made by frank conrad which was called 8XK but then renamed to KDKA
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the KDKA did 10 min radio advertising and made money from all the adverting ny charging $50
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uncle charlies very popular and they were mostly blocking most of the radio advertising so the FRC was made. they would organize licsening transmitters and assigning frequences.
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during the great depression the radio providea escape form the troubles that were going on at the time
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radio lost money when advertisers went to tv.popularity grew more for tv then radio around this time.
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apple was a new dawn of commercial severs