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The Leningrad T-3 combined installation from the 4th quarter of 1948 was produced by the Leningrad Kozitsky Plant. The installation contains a TV, radio and record player. There are 32 lamps in the installation and a 31LK1B round kinescope with a beam deflection of 53 °. TV channels are made according to the superheterodyne scheme with separation of image signals and sound after the converter. He could receive 3 programs and FM radio stations in 3 subranges. The radio "Leningrad-50" is designed to receive stations in the Far East, Northwest and HF bands. EPU with pickup and hitchhiking lost records at a speed of 78 rev / min. When receiving television, 32 lamps worked, VHF-FM - 13, while receiving AM - 15 lamps. The scheme of the sweepers as in the TV "Leningrad T-1", the synchronization channel is complicated, a new auto-tuning of the line frequency is applied. The chassis with kinescope, receiver, electric control system and loudspeakers are enclosed in a wooden box of a cantilever type. The model parameters correspond to the parameters of the devices on the basis of which it was created. The speaker consists of 4 multi-band loudspeakers and, with an input power of 8 W, reproduces an audio frequency band of 80 ... 10000 Hz. The power consumption when receiving a TV is about 450 W, the radio and the player is 185 W. Dimensions of the device 1350x1150x500 mm. Weight 150 kg. The installation did not enter the free market, but was distributed to the houses of culture of large cities, as well as to awards to honored people or for gifts to distinguished officials in the country's ruling nomenclature.