Television systems before 1940 A number of experimental and broadcast pre World War II television systems were tested. The first ones were mechanical based and of very low resolution , sometimes with no sound. Later TV systems were electronic.France France 1930 : 30 lines, 12.5 frame/s France 1932 : 60 lines, 12.5 frame/s, 3:7 vertical aspect ratio , vertical scanning ~35x60 pixels per frame, sound, live images France 1935-1936 : 180 lines France 1937-1939 : 455 lines France 1943-1956 : 441 lines Germany Doberitz 1932 : 48 lines, 25 frame/s, 4:3 horizontal aspect ratio, ~64x48 pixels per frame, sound, talking movies Berlin R.P.Z. 1932 : 60 lines, 25 frame/s, 4:3 horizontal aspect ratio, ~83x60 pixels per frame, test movies and live images Germany 1932: 90 lines Germany 1935: 180 lines Germany 1936: 375 lines Germany 1937: 441 lines, 25 frame/s, line frequency 11,025 Hz. Vision 46.0 MHz Sound 43.2 MHz. Germany 1940: 1,000 lines signal projection, no glass screen but projection screen Netherlands Netherlands 1930s: 441 lines, 25 frame/s, line frequency 11,025 Hz Late 1940s: 567 lines Poland Warsaw 1937 : 120 lines, test movies and live images from a studio Electronic TV was under development and was publicly demonstrated during the Radio Exhibition in Warsaw in August 1939 , regular operations planned to start at the beginning of 1940, work stopped because of the outbreak of World War II.Switzerland Switzerland 1932 : 30 lines, 16.6 frame/s, 4:3 horizontal aspect ratio, ~40x30 pixels per frame, test movies and live imagesItaly During the 1930s there were also experimental transmissions from the Vatican - but further details are unknownItaly 1932 : 60 lines, 20 frame/s, 4:3 horizontal aspect ratio, ~45x60 pixels per frame, test movies and live images Italy 1937 : 375 lines, 25 frame/s, 4:3 horizontal aspect ratio, daily from Rome, between 6pm and 9.30pm on 6.9 meters with a power of 2 kW Italy 1939 : 441 lines, 25 frame/s, 4:3 horizontal aspect ratio, regular service from Rome and Milan. 2 kW transmission power on VHF 45 MHzUK Mechanical England 1926 : 30 lines, 5 frame/s, black-and-white experimental transmissions England 1928 : 30 lines, 5 frame/s, first experimental color TV transmissions London 1932 : 30 lines, 12.5 frame/s, 3:7 vertical aspect ratio, vertical scanning, ~70x30 pixels per frame, sound, live TV from studio England 1936 : 240 lines, 25 frame/s, line frequency 6000 Hz, used from November 1936 to February 1937 Electronic UK : 405 lines / 50 Hz . Used by the BBC Alexandra Palace television station initially from November 1936 to 1939 and then 1946 to 1985. * The EMI 405 lines system was the first to have an ITU System Letter Designation, and is known as System A . As the EMI system predates PAL , there is no PAL designator in the ITU television system table.USSR 1932 : 30 lines, 12.5 frame/s, 4:3 horizontal aspect ratio, ~40x30 pixels per frame, test movies and live images Leningrad, 1935 : 180 lines, 25 frame/s with progressive scanning Leningrad, 1937 : 240 lines, 25 frame/s with progressive scanning Moscow, 1938 : 343 lines, 25 frame/s, 4:3 horizontal aspect ratioNorth America USA 1933: 240 lines USA 1936: 343 lines; limited public demonstrations in New York City and Philadelphia . Field tests in Los Angeles used various line systems, but adopted RCA's 441 lines system by 1938. USA 1938-9: First TV receivers sold on a very limited basis, mostly in New York . Manufacturers included RCA , General Electric , DuMont , and Andrea . USA 1937-1941: 441 lines @ 30 f.p.s. and 605 lines. WRGB WNBC-TV WCBS-TV KCBS-TV BBC/BBC Television Fernsehsender Paul Nipkow Television systems before 1940 NTSC PAL SECAM Mechanical television 180-line television system 405 lines 441 lines 819 lines NBTV Display resolution
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