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Heinrich Hertz invented the wireless transmitter. At that point in time Hertz didn't think it meant much
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Marconi sent the first wireless communication over open sea and read "are you ready"
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Ernest Fisk conducted an isolated experiment in which music was broadcasted
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Charles David Herrold constructed a broadcasting station. It used spark gap technology, but modulated the carrier frequency with the human voice, and later music.
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Marconi initiated duplex transatlantic wireless communication between North America and Europe for the first time, using receiver stations in Letterfrack Ireland, and Louisbourg, Nova Scotia
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First radio broadcast by station 8MK, the unlicensed predecessor of WWJ (AM) in Detroit, Michigan
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Edwin H. Armstrong invented the FM radio which uses frequency modulation of the radio wave to minimize static and interference from electrical equipment and the atmosphere in the audio program
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Standard analog television transmissions started in North America and Europe.
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Regency introduced a pocket transistor radio, the TR-1, powered by a "standard 22.5V Battery"
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LORAN became the premier radio navigation system. Soon, the U.S Navy experimented with satellite navigation
