by 
hohnsolo
ANSWERS: 3
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Compliments of About.com Guglielmo Marconi, an Italian inventor, proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895. By 1899 he flashed the first wireless signal across the English Channel and two years later received the letter "S", telegraphed from England to Newfoundland. This was the first successful transatlantic radiotelegraph message in 1902. Nikola Tesla In addition to Marconi, two of his contemporaries Nikola Tesla and Nathan Stufflefield took out patents for wireless radio transmitters. Nikola Tesla is now credited with being the first person to patent radio technology; the Supreme Court overturned Marconi's patent in 1943 in favor of Tesla.
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Technically, since the mid 1860s ... http://inventors.about.com/od/rstartinventions/a/radio.htm .
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*EVEN* longer than I have, believe it or not. (I know, it's hard for me to believe sometimes, too.)
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