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These color picture tubes do not exist in Poland. Our color television started late, around 1970. The color picture tubes we use are the Soviet 59LK3C, 61LK4C. At the end of the 1970s, we started to produce the A56-701X picture tube under the RCA license.
For now, my work is focused on the regeneration of black and white picture tubes, for the earliest TV sets that were in Poland. The cathode-ray tubes used there were the Soviet 31LK2B, 35LK2B and the Polish 35MK1, 35MK21, 35MK22, AW36-80, AW43-80 and the like. For training purposes, I try on much newer 20mm cathode ray tubes, similar to the A31-310W.
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