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How T.V broadcasting has progressed.
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John Logie Baird broadcasted a picture of the Maltese Cross. It was a mechanical system, with a 30 lines resolution.
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German government began a national service. It was the first non-experimental public television broadcast.
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Don Lee Broadcasting system begins a public demonstration of CRT television with daily broadcasts with 300 line pictures using the Harry Lubcke's system.
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The first scheduled television broadcasts in the UK started. (The Baird and EMI systems were rotated on a daily basis until February 4, 1937, when the EMI system was adopted, and Baird's was stoped.)
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The first regularly scheduled television broadcasts in the USA started in LA.
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The first commercial TV licenses were issued to WCBW and WNBT , New York City. (On September 1, 1941, KYW-TV, Philadelphia became the third licensed station for commercial operation.)
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When monochrome broadcasts became common, CBS and RCA went to war with different colour broadcasting systems. Baird had demonstrated a color system as early as 1928. CBS, which proposed its Field Sequential System in 1940, fought its way through the courts, received approval for color broadcasts.
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In the 1960's RCA colour began to take hold, and in the summer of 1966, NBC went all colour geting rid of the peacock opening in early 1975.
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WRAL-HD starts broadcasting the first HD T.V.
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It turned out, less than 15% of stations went off. With more then 6500 translators and Low Power TV stations still running in June 2009, analog to digital conversion is work in progress.