Black-and-white television receiver "Spring-305".
Black and white televisionsDomesticThe television receiver of the black-and-white image "Spring-305" has been producing the Dnepropetrovsk Radio Plant since the 1st quarter of 1975. The unified TV of the 3rd class "Spring-305" (ULT-50-III-2) does not differ in design and electrical circuit from the TV "Spring-304". There is a slight difference in appearance. The TV was produced in tabletop and floor designs. CRT type 50LK1B. Wooden case with various options for finishing the body and front panel. The TV works in any of the 12 channels of the MW range. Sensitivity 150 μV. The rotary, vertical chassis contains printed circuit boards with nodes and circuit elements. The main control knobs are brought out to the front panel, the rest to the upper part of the rear wall. Here are the knobs for adjusting the local oscillator, PTK, volume, mains switch, contrast and brightness. On the back wall there are line frequency controls, size and frame rate controls, a mains voltage switch, antenna sockets. The TV provides image size stabilization, connecting a tape recorder to record sound and headphones You can listen to sound on the headphones when the speaker is turned off. AGC creates a stable image. The influence of interference is minimized by AFC and F horizontal scanning. The TV has 16 tubes and 15 diodes. The TV is powered by AC. The size of the visible image is 308x394 mm. Power consumption from the network is 160 W. Dimensions of the TV 510x502x365 mm. Weight 26 kg. Since the 1st quarter of 1976, the plant has been producing the TV "Spring-306", its design does not differ from the one described, but the unification here is another 3ULPT-III, respectively, with this the electrical circuit of the new TV has some differences.
