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Marconi is an italian inventor. Sent and received first radio signal in 1895.
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1920,8XK, later renamed KDKA
Frank Conrad
Still around today broadicasting out of Pittsburg,Pennsylvania -
1922 WEAF aired a 10 minute 'commercial'
Established FRC in 1927
W is east Mississippi River K is west Mississippi
AM waves 535 KHz - 1605 KHz
FM waves 88 - 108KHz -
1906, Lee De Forest borrowed the idea (Canadian inventor) .Reginald Fessenden,actually came up with the idea,but didn't seem to make it into the history books for that invention.
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30's and 40's
Middle of great depression
TV makes appearance in late 30's
Radio lost money -
Juke Boxes
Records
Live concerts
Major Edwin Armstrong invented the FM transmitter
Talk on AM
Music on FM
