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radio is used since 1895 -Today
marconi invented radio -
in 1906 lee di forest created audio tube.the audio tube vacum tube that amplified signal.it is widly belived that a Canadian inventor, fessenden actually came up with this idea but fessenden did't seem to make in into the history bookd for that invention.
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first it was called 8xk, later renamed KDKAfrank conrad invented radio stationradio station was used for communication and giving people the news.
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uncle charlie had his own radio station.back then you did't need license to buy radio if you had money you could buy radio.the proble was every one wanted the own radio station.
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they make advertising and the sell them for an apartment complex they charged $50.back then they charge 5 dollar a min now for a superball game they charge obout 3 or 4 million for 30 sec.
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uncle charlie was too popular.people near uncle charlie paid for another station but uncle charlie signal was interfering so the have FRC.federal communication commission
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535 KHz - 1605 KHzamplitude modulation
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family meduumthe entire family can enjoy it togetherpeople would buy radio
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famos shows of the golden era super man
gun smoke
64 dollar question -
W is East o the Mississippi river
K is west of the mississippi river -
tv makes appearance inthe lare 30's
as popularity grew, Advertisers wnet to tv
radio lost money, radio shows jumped ship -
pandora
youtube
i tune
spotify