Black-and-white television receiver `` Birch ''.
Black and white televisionsDomesticThe Birch TV set has been produced by the Kharkov Kommunar plant since 1964. Since 1966, the plant has been producing TV sets "Birch-2", "Birch-2-1", "Birch-3". These unified class 2 TVs have a common electrical circuit and design, differing slightly in different release options for their scheme and design. The Birch TV (UNT-47) has a 47LK1B kinescope, 16 lamps and 20 p / n devices. Its dimensions are 490x460x330 mm. Weight 26 kg. The Birch-2 TV (UNT-47-I) has a 47LK2B kinescope, 17 lamps and 22 p / n devices. Dimensions of the model are 595x505x350 mm. Weight 26 kg. The TV set "Birch-2-1" is an analogue of the TV "Birch-2", but it is intended for installation on the floor. The device also differs slightly in design. Dimensions of the TV with legs 595x905x350 mm. The Birch-3 TV (UNT-59-I) has a 59LK2B kinescope, 17 radio tubes and 22 p / n devices. Its dimensions are 595x500x380 mm. Weight 36 kg. All models have the same characteristics. Sensitivity 50 μV. The nominal output power of the sound channel is 1.5 W. Sound frequency range 100..10000 Hz. Power consumption 180 watts.
