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Nederlands Forum over Oude Radio's |
Re: De afmetingen van de kathodestraalbuis zijn begrensd...
Geschreven door Henk Roovers op 15. Apr 2006 11:52:48:
In reactie op: Re: De afmetingen van de kathodestraalbuis zijn begrensd... geschreven door Henk Roovers op 15. Apr 2006 11:46:15:
Een stukje van de genoemde site:
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Various forms of experimental color television were in the laboratory from the earliest days of TV. In August 1940, CBS announced that it had marketable technology (a mechanical spinning color wheel set). In October 1950, the FCC approved the CBS color system for commercial use. Broadcasting began on June 25, 1951. Less than sixty CBS-Columbia mechanical sets were sold (2 remain today). The Korean conflict suspended color TV production until 1953, at which time the FCC reversed their decision, and approved the RCA electronic system.Color television (as we know it) was introduced to the public in 1954, with the sale of approximately 1,000 RCA Model CTC-100 sets at $1,000 each. About 75 of those first sets exist today, and only a handful are still in operation. The picture tube is unique to that set and once it goes bad, there is no way to replace it. Efforts are currently in place to attempt a rebuild of the remaining 'dud' CRTs. See original RCA ad for the new CRT below.
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te vinden op http://www.tvhistory.tv/books3.htm