Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Marconi and radio telegraphy · Radio companies · FM |
The first voice and music signals heard over radio waves were transmitted in December 1906 from Brant Rock, Massachusetts (just south of Boston), when Canadian ... |
The first commercial radio broadcast was transmitted on 2 November 1920, when the live returns of the Harding-Cox presidential election were broadcast by ... History of radio · Radio (disambiguation) · Radio wave · Radio receiver |
In 1893 the inventor Nikolai Tesla demonstrated a wireless radio in St. Louis, Missouri. |
These two pages focus on the first historical use of radio—mobile radio. Heinrich Hertz proved that electricity can be transmitted in electro- magnetic waves. |
The first steps toward inventing radio involved discovering electromagnetic waves and their potential. Hans Christian Oersted was the first to proclaim, in 1820 ... |
In 1895, a young Italian named Gugliemo Marconi invented what he called “the wireless telegraph” while experimenting in his parents' attic. He used radio waves ... |
In 1913 Lee de Forest, inventor of the audion tube, a device that makes radio broadcasting possible, was brought to trial on charges of fraudulently using the ... |
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