Radiola network lamp `` Ural-57 ''.
Radio and electrical constructors, sets.Radio receiving devicesRadiola network lamp "Ural-57" from the beginning of 1957 was produced at the Sarapul plant. Ordzhonikidze. Consists of a 6-tube superheterodyne receiver and an electric turntable for regular and LP records. Since 1957, a full set of radio components, assemblies and housings have also been widely sold, from which, having initial knowledge in radio and electrical engineering, it was possible to assemble a radio tape similar to the factory one. Radiola is designed to operate in 4 ranges: DV and SV, 2 sub-bands KV-1 76 ... 40 m, KV-2 31 ... 25 m. Sensitivity in DV and SV 150 µV, KV 250 µV. Pickup sensitivity 180 mV. Selectivity on the adjacent channel with a detuning of 10 kHz in the ranges DV, SV 26 dB. Selectivity on the mirror channel in the range of DV 36 dB, MW 30 dB, in the KB ranges 12 dB. AGC provides, when the input voltage changes by 26 dB, the output voltage changes by 8 dB. The background level at the output is -37 dB. Treble tone control provides a 6 dB change in frequency response. Uneven frequency response of the entire receiver path in terms of sound pressure in the frequency range 100 ... 4000 Hz -12 dB. Nonlinear distortions in sound pressure at rated output power at frequencies below 200 Hz no more than 10%, at frequencies above 200 Hz no more than 7%. Rated output power 1.5 W, maximum 4. Electric motor EPU asynchronous DAG. Piezoelectric pickup ZPU-1. The speaker system consists of two 2GD-ZL loudspeakers. Power consumption when receiving 80 W, when playing records 110 W. Power supply from a network with a voltage of 110, 127 or 220 V. The dimensions of the radio are 549x393x310 mm, weight is 24 kg. Radiola had a different range and color combinations of the body. The radio was released until 1963.
