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The television receiver of the black-and-white image "Wave 23TB-410D" from I-q 1999 produced by Penza Radio Plant OJSC. The TV was produced in three versions with 23, 31 and 34 cm diagonal picture tubes, which was reflected in the name, for example, "Wave 31TB-410D" and "Wave 34TB-410D". By design, electrical circuit and design, except for dimensions and masses - televisions are identical. Any of the TVs operates in the MV and UHF range. Sensitivity in the MV range of 20 μV, DMV 30 μV. Resolution 350 lines. The nominal output power of the LF channel is 0.5 watts. The range of reproduced frequencies is 250 ... 10000 Hz. The plant also produced a TV "Wave 23TB-411D" at the same time with three types of picture tubes. These televisions had a remote control of all functions.