Early Television
Early Television
Early Television
Early Television
Early Television Early Television

Gerolf Poetschke's Site

German prewar color TV

COLOR TV 1938

In 1938 the German Post Office demonstrated at the Berlin Radio-Show a Color-TV-System with a 2-color disc rotating in front of a Cathode Ray Tube with 180 lines, 50 colorframes/s = 25 pics/s. During the show-demonstration the number of lines was reduced to 90 with 12,5 pics/s (why?). The scanner was only a movie-scanner, so no direct TV caps could be made. Color TV was shown on a CRT-projector with a screen of 75 x 60 cm. The system was later developed to a 3-color system but all works were canceled in 1940.

later 3-color-disc:

color range of the 2-color system:

fürther improvements were made by Otterbein from RPF and also shown (experimental) to the public 1938 in Berlin by using a electronic color filter instead of the rotating color disc. A lot of other color TV experiments were made by RPF, like a 3 color line system with 3 colors on the tube (10 lines/mm!).

Sources: 
Jahrbuch des elektrischen Fernmeldewesens 1940, pages 322-353
Goebel, Das Fernsehen in Deutschland bis zum Jahre 1945, pages 368-369


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