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10 Cards in this Set
- Front
- Back
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marconi
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invented wireless telegraphy 1894
which used code not voice est british marconi comp in 1897 american marconi comp in 1899 |
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lee de forest
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wrote first doctorial dissertation on wireless technology
interested in wireless voice and voice transmission (wireless radio telephony) |
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crystal sets
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diy radios
hobbyists became the first audience for broadcast (developed new tech) eaves dropping on gov |
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wireless ship act
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1910 recquired all us ships carrying 50+ passengers to have a radio if traveling more than 250 miles off coast helped save 700 people in titanic
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radio act
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1912 recquired all wireless stations to obtain a license from the dept of commerce, addressed problem of amature radio operators
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radio corp of america (RCA)
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a private sectoe monopoly that dominated the wireless industry and expanded american communication technology globally
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major patent holders -4
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ge westinghouse att united fruits
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kdka
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1920 by westinghouse in pittsburg first commercial broadcast station in us
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weaf
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1922 started by att in nyc
first radio station to sell commercial time to advertisers(toll broadcating) |
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wnnc and wnac used ..
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phones to create first network
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