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Since October, 1947, the tube-type radio receiver of the Riga T-755 type has been manufactured by the Riga plant Radiotekhnika. The name "Riga T-755" stands for: T network type, 7 year of development, 5 number of high frequency circuits, 5 number of lamps. The radio works in the standard ranges of long, medium and short waves. The sensitivity from the antenna input of the antenna is about 180 µV on all bands. The intermediate frequency is 468 kHz. Selectivity on the adjacent channel is 35 ... 40 dB, specular, on DV, CB - 30 dB, on KV - 12 dB. Rated output power of the amplifier - 2 watts. The range of reproduced sound frequencies is no longer - 200 ... 4000 Hz. Power consumption from a network of 50 watts. The first series of radio receivers, released before 1951, had extended ranges: DV - 2069 ... 750 m, CB - 577 ... 185.5 m, KV - 71.5 ... 21.5 m. Sensitivity and selectivity, to the neighboring The channel and the output power in this series were also significantly higher: 100 µV / 50 dB / 3 W, respectively. The model parameters were adjusted to the new GOST for 4th class receivers. The Kenotron 5TC4S in the power supply unit in 1951 was replaced by a more economical 6C5S. The dimensions of the receiver 400x310x205 mm, weight 10.6 kg.