Belarus'-103L 1968
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Since 1968, the radio tube network lamp Belarus-103L has been produced at the Minsk Radio Plant. Radiol consists of a first-class ten-lamp receiver designed for receiving radio stations in the range of DV 150 ... 408 kHz, CB 525 ... 1605 kHz, KV3 3.95 ... 7.6 MHz, KB2 9.3 ... 9, 8 MHz, KB1 11.6 ... 12.1 MHz and VHF 65.8 ... 73 MHz and three-speed II-EPU-15A, with auto switch and microlift. Sensitivity with external antenna in LW, MW, HF ranges 50 µV, in the range of VHF-FM 8 µV. Sensitivity with magnetic antenna in the Far East, SV ranges 500 µV / m, in the "local reception" position 0.7 mV. The intermediate frequency of the AM path is 465 kHz and that of the FM path is 6.5 MHz. The adjacent channel selectivity at 10 kHz detuning is 60 dB. In FM, the average slope of the slopes of the resonance characteristic of 0.25 dB / kHz. The bandwidth of the IF in the AM path in the "narrow band" position 4 kHz, "wide band" 11 kHz, "local reception" 14 kHz, in the FM path, the bandwidth of 160 kHz. The AGC system of the radiometers provides a change in the output signal by 10 dB, when the input signal changes by 60 dB. The nominal output power of the amplifier is 4 W, the maximum is 7 W, the frequency range is 80 ... 12500 Hz. The timbre adjustment limits are 12 dB. The sensitivity of the amplifier from the sockets of the tape recorder at a rated output power of 150 mV, the level of the background is -54 dB. The loudspeaker system consists of 3 2GD-19 loudspeakers. It feeds from the radio ac network. Power consumption from the network 100 watts. The dimensions of the radio are 790x380x355 mm, its mass is 27 kg.
Documentation:
Information from collection of Valery Khartchenko