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When was the first radio broadcast?
" Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system based on airborn Herzian waves (radio transmission)." -
Who created the radio
"a young Italian named Gugliemo Marconi invented what he called “the wireless telegraph”" -
Radio signal amplifier devised
"Columbia University electrical engineering student Edwin Howard Armstrong devises a regenerative circuit for the triode that amplifies radio signals. By pushing the current to the highest level of amplification". -
First scheduled commercial radio programmer
"station KDKA in Pittsburgh becomes radio’s first scheduled commercial programmer with its broadcast of the Harding-Cox presidential election returns, transmitted at 100 watts from a wooden shack atop the Westinghouse Company’s East Pittsburgh plant".http://www.greatachievements.org/?id=3659 -
FM radio becomes famous
"Edwin Howard Armstrong develops frequency modulation, or FM, radio as a solution to the static interference problem that plagues AM radio transmission, especially in summer when electrical storms are prevalent. " -
When did the radio become popular in America?
"radio format moved to FM, AM radio stations were left with fewer and fewer options."
