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In 1864, James Maxwell discovered that electromagnetic waves can travel through free space.
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Over several years starting in 1894 the Italian inventor Guglielmo Marconi built the first complete, commercially successful wireless telegraphy system based on airborne Hertzian waves (radio transmission)
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In 1900, Brazilian priest Roberto Landell de Moura transmitted the human voice wirelessly for a distance of approximately a half mile.
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In April 1909 Charles David Herrold, an electronics instructor in San Jose, California constructed a broadcasting station.
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Station 8MK was the first radio broadcaster and is still around today as WWJ under ownership of CBS
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In 1947 AT&T commercialized the Mobile Telephone Service. From its start in St. Louis in 1946, AT&T then introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948
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In 1955, the newly formed Sony company introduced its first transistorized radio. It was small enough to fit in a vest pocket, powered by a small battery.
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In 1963, the first ever television commercial in color, aired.
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In 1993, Malamud launched "Internet Talk Radio" which was the "first computer-radio talk show, each week interviewing a computer expert."
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In 2008, 13 percent of the American population listened to the radio online, compared to 11 percent in 2007. Internet radio functionality is also built into many dedicated Internet radio devices, which give an FM like receiver user experience.
