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Gugliemo Marconi Sent and received the first radio signal.
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On this day, Reginald Fessenden made the first wireless telephone call and became the first person in history to transmit the human voice through radio waves.
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On this date, the U.S. Air Force lauched the 24th Navstar satellite into orbit, completing a network of 24 satellites known as the Global Positioning System.
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On this day, XM rolled out its satellite radio service to nationwide subscribers