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The television receiver of the black-and-white image "Sapphire 23TB-431D" from I quarter of 1995 was produced by the Ryazan plant Red Banner. The TV was produced in two versions with a kinescope size on a diagonal of 23 and 31 centimeters, the second is the Sapphire 31TB-431D model. Televisions are the same in design, but differ in design. Both models work in the MV and UHF range. The sensitivity in the MV range of 40 µV, in the UHF - 70 µV. Rated output power 100 mW. Resolution 350 lines. The dimensions of the first model are 255x260x250 mm, the second one is 330x340x280 mm. TV mass is 6.5 and 8.7 kg respectively. In 1995, experienced, on a non-standard kinescope was released TV "Sapphire 24TB-431D".
Based on information from collection of Valery Khartchenko