Charles David "Doc" Herrold (November 16, 1875 – July 1, 1948) was an American inventor and pioneer radio broadcaster, who began experimenting with audio...
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Herrold is a surname of Anglo-Saxon origin, meaning "love of the army". Notable people with the surname include: Charles Herrold (1875-1948), American...
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major site of United States Navy research and technology. In 1909, Charles Herrold started the first radio station in the United States with regularly...
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States still in existence, KCBS (AM) (740 kHz), founded by engineer Charles Herrold in 1909. As the home of Silicon Valley, the Bay Area is also a technologically...
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San Jose, in early December 1921. However, the original licensee, Charles Herrold, had begun making audio radio transmissions in 1909, as part of an...
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January 2020. Retrieved 28 April 2020. "Bay Area Radio Museum: The Charles Herrold Story". 12 August 2014. "U.S. Economic Development Administration:...
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to larger audiences. Charles Herrold started broadcasting in California in 1909 and was carrying audio by the next year. (Herrold's station eventually became...
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voice and music by 1906. Charles "Doc" Herrold of San Jose, California sent out broadcasts as early as April 1909 from his Herrold School electronics institute...
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of narrowcasting came from broadcasting. In the early 20th century, Charles Herrold designate radio transmissions meant for a single receiver, distinguished...
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conducted by Fessenden, Valdemar Poulsen, Ernst Ruhmer, Quirino Majorana, Charles Herrold, and Lee de Forest, were hampered by the lack of a technology for amplification...
35 KB (4,576 words) - 04:14, 19 April 2024