Sapfir-401 black-and-white television receiver.

Black and white televisionsDomesticSince the beginning of 1981, the television receiver for b / w images "Sapphire-401" has been produced by the Ryazan plant "Red Banner". The small-sized unified semiconductor-integral TV set "Sapphire-401" is designed to receive television programs in the MW range. The TV operates from the mains or from a 12 V current source. High-quality image and sound are provided by the AFC and F systems, AGC, and a stabilized rectifier. The TV has a retractable telescopic antenna. It is possible to install a channel selector for receiving transmissions in the UHF range. Headphones can be connected to the TV. The TV is equipped with an explosion-proof picture tube 23LK13B. The case is made of impact-resistant polystyrene in various colors. Specifications: Image size 140x183 mm. TV sensitivity - 55 μV. The frequency range is 400 ... 3500 Hz. The nominal output power of the sound channel is 100 mW. Dimensions 338x233.5x212 mm. Weight 4.5 kg. The retail price of the TV is 200 rubles. Since 1982, the plant has been producing the Sapphire-401-1 TV set, which, apart from a slight change in the external design and a price of 165 rubles, did not differ from the base one. Since 1985, the TV "Sapphire-401-1" has been "modernized" and has been produced practically unchanged under the name "Sapphire-401M".