25-12-2020, 07:57 PM
During the 1940's and early 1950's, television broadcasting times were quite short. So the picture tubes were wearing out slowly. Looking at the different types of cathode ray tubes from that period, I come to the conclusion that today they are usually good or very good. CRTs that are damaged most often have lost their vacuum or have mechanical damage. It is rare for them to have poor emissions due to wear and tear. For example, I have several models of German TV with a round cathode ray tube B30M1 / Rembrand, Rubens, Iris, Weissensee /. All these televisions retained excellent cathode ray tube emission.
