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Marconi developed, demonstrated, and marketed in the years of 1874-1937.
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In 1901 Marconi broadcast the first transatlantic radio signal.
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British engineer Sir John Ambrose Fleming invents the two-electrode radio rectifier; or vacuum diode, which he calls an oscillation valve.
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War radios began to become more popular among civilians.
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John transmits the first recognizable image the head of a ventriloquist’s dummy—at a London department store, using a device he calls a Televisor. A mechanical system based on the spinning disk scanner developed in the 1880s.
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Edwin Armstrong develops frequency modulation, or FM, radio as a solution to the static interference problem that plagues AM radio transmission.
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The radio stations begin broadcasting in stereophonic sound.
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Today most people use their phone to search music or they use music apps, but there are still radios.