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The invention of radio communication was preceded by many decades of ... Cal: The author. Bottone, S. R. (1910). ... A complete text book for students of radio ...
Radio pioneer Alexander Popov on the 1989 USSR stamp. The text says "Inventor of radio, A. S. Popov, 1859–1906. Demonstration of the first radio, 1895" Books about A. S. Popov: Golovin G.I. ("The life of wonderful people" Series, No. 141): Alexander Stepanovich Popov – 1945, 88 pp., 50
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
Empire of the Air: The Men Who Made Radio is a non-fiction book by Tom Lewis, which traces the early development of radio broadcasting in the United States, published by HarperCollins in 1991. [2] The book was adapted into both a 1992 documentary film by Ken Burns and a 1992 radio drama written and directed by David Ossman . [ 3 ]
1920s: Radio was first used to transmit pictures visible as television. 1926: Official Egyptian decree to regulate radio transmission stations and radio receivers. [40] Early 1930s: Single sideband (SSB) and frequency modulation (FM) were invented by amateur radio operators. By 1940, they were established commercial modes.
Guglielmo Giovanni Maria Marconi [11] [12] was born in Palazzo Marescalchi in Bologna on 25 April 1874, the second son of Giuseppe Marconi (an Italian aristocratic landowner from Porretta Terme who lived in the countryside of Pontecchio) and his Irish wife Annie Jameson (daughter of Andrew Jameson of Daphne Castle in County Wexford, sister of Scottish naturalist James Sligo Jameson, and ...
Armstrong's "feed back" circuit drawing, from Radio Broadcast vol. 1 no. 1 1922. Armstrong began working on his first major invention while still an undergraduate at Columbia. In late 1906, Lee de Forest had invented the three-element (triode) "grid Audion" vacuum-tube. How vacuum tubes worked was not understood at the time.
Radio Electronics Weekly Business Letter; Radio Listeners Guide and Call Book [title varies] Radio News — July 1919 (as Radio Amateur News) to July 1948; Radio Program Weekly; Radio Review; Science and Invention – formerly Electrical Experimenter; published August 1920 to August 1931