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"James Clerk Maxwell predicts the existence of electromagnetic waves in his paper 'A Dynamical Theory of the Electromagnetic Field'".
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"Nikola Tesla wirelessly transmitted electromagnetic energy. He made the first public demonstration of radio in St. Louis in 1893". -
Duplicating Hertz’s experiments in his own home, he successfully sent transmissions from one side of his attic to the other. Despite the indifference of the Italian Government, “Marconi moved to England and took out a patent on his device”.
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"First transatlantic signal sent-by Marconi from Ireland to Canada".
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"The Marconi Station in Glace Bay, Nova Scotia, Canada, transmits the first signal from North America back to Great Britain". -
"Marconi starts conducting more organized and documented tests sailing on board the SS Philadelphia west from Great Britain recording signals sent daily from the Poldhu Station, showing reception up to 2100 miles (3400 km)".
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"In 1906, Massachusetts resident Reginald Fessenden initiated the first radio transmission of the human voice, but his efforts did not develop into a useful application".
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"All U.S. radio stations not needed by the government are closed as WWI begins". -
"The first permanent national network, NBC, was formed".
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"FM radio was patented; Edwin H. Armstrong invented it. FM 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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"Cellular radio telephony, with call handoff and frequency reuse, was conceived at Bell Laboratories".
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"Texas Instruments produces the first commercial transistor radio, launching the portable electronic age".
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"The digital transmissions began to be applied to broadcasting". -
"Headquartered in New York City, with smaller studios in Los Angeles and Memphis, Sirius was officially launched on July 1, 2002. It now provides 69 streams (channels) of music and 65 streams of sports, news and entertainment to its subscribers".
