- 441 lines
441 lines, or 383i if named using modern standard, is an early electronic
televisionsystem. It was used with 50 interlaced frames per second in Franceand Germany, where it was as an improvement over the previous 180 linessystem. In North Americait was used by RCA with 60 frames per second from 1938to 1941.
Use in Italy
Broadcasts using the system began in
Italyin 1939 with regular services from Rome and Milan using 2 kW power on the frequency 45 MHz
Field tests in
Los Angeleson various line systems began in 1936, and North America had adopted RCA's 441-line system by 1938. The following year the first TV receivers were sold on a very limited basis, mostly in New York. Its manufactures included RCA, General Electric, DuMont, and Andrea. The 525 line System-M replaced the 441 line standard on July 1, 1941.
*cite web|url=http://www.pembers.freeserve.co.uk/World-TV-Standards/Line-Standards.html|title=World Analogue Television Standards and Waveforms - Line Standards|accessdate=2007-04-03
* [http://www.xs4all.nl/~aobauer/TV%20E1%201939.pdf (in German) Rolf Wigand: Technische Beschreibung des E 1 (Zeitgenössischer Artikel in „Radio-Mentor", pdf 295 kB)]
* [http://bs.cyty.com/menschen/e-etzold/archiv/TV/telefunken/einheitsempfaenger.htm (in German) Eckhard Etzold: Ausführliche Webseite mit vielen Fotos sowie Schaltbild des E 1]
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