Sapfir-23TB-307 / D black-and-white television receiver.
Black and white televisionsDomesticThe television receiver of the black-and-white image "Sapphire-23TB-307 / D" has been produced by the Ryazan Television Plant since 1991. "Sapphire 23TB-307 / D" is a small-sized portable transistor TV set with integrated circuits. A TV with the index "D" was produced with an installed UHF channel selector of the SK-D-24 range. A TV without an index was produced without a selector, but with the ability to install it. The TV uses a 23LK13B-2 kinescope with a screen diagonal of 23 cm and a beam deflection angle of 90 °. The TV set provides reception of television broadcasts on any of the 12 channels of the MB range and on any of the channels from 21 to 60 in the UHF range; listening to sound on headphones when the loudspeaker is off. AGC provides a stable image. The influence of interference is minimal with the help of AFC and F. The size of the image is 140x183 mm. The sensitivity of the image channel in the MB range is 40 µV, UHF - 70 µV. Horizontal resolution 350 lines. The nominal output power of the soundtrack channel is 0.2 W. The range of reproducible frequencies is 400 ... 3550 Hz. The supply voltage at which the TV operates: from the network 198 ... 242 V, from an autonomous source 12.5 ... 15.8 V. Power consumption from the network is 30 W, from an autonomous source of 20 W. Dimensions of the TV 250x350x230 mm. Weight 5.5 kg.
