Sputnik-61 black-and-white television receiver.
Black and white televisionsDomesticSince 1961, the Sputnik-61 black-and-white television receiver has been produced by the Omsk Television Plant. TV "Sputnik-61" in its scheme, design and parameters almost does not differ from the TV "Zarya-2" and is an improved version of the TV "Sputnik". In contrast, AGC is used here and headphone jacks are installed. The jacks can be used to connect a tape recorder for recording. Loudspeaker 0.5GD-10 provides normal volume in a small room. The use of a wooden case has improved acoustics compared to previous TVs with metal and copolymer cases. The main control knobs, such as volume, brightness, contrast controls, as well as the channel selector and local oscillator adjustment are located in the niches on the right side of the box. The horizontal size of the image is adjusted using a copper split cylinder moving along the neck of the picture tube. The image is centered with a common handle connected to a centering magnet mounted on the neck of the tube. The size and centering can be adjusted only after removing the kinescope protective cap. The TV uses lamp panels with silvering contacts, which provide reliable contacts when the radio tubes are heated in the TV, the reliability of the output sound transformer has been increased due to the use of a larger wire in it and the use of impregnation, the reliability of the power transformer has been increased, etc. The TV has a 35LK2B kinescope with an image size of 210x280 mm, 13 lamps and 8 diodes. Sensitivity 275 μV. Sound frequency range 200 ... 5000 Hz. The nominal output power of the sound channel is 0.5 W. Dimensions of the TV 310x375x405 mm. Weight 20 kg. Power consumption 130 watts. The price is 180 rubles. In 1963, the TV was modernized. The appearance, the arrangement of parts on the board of the horizontal and vertical scan sections was changed, the L7 (6N3P) lamp was replaced with a 6F1P lamp, instead of open-frame variable resistors for adjusting the "Frame rate", "Vertical linearity", "Vertical size" and "Frame rate "that proved to be not the best during operation, they began to install standard ones in the case, the resistors connected in parallel to the rectifier diodes were transferred from the back side of the board to the front side and placed next to the diodes (for ease of installation).
