Radiola network lamp `` Ural-57 ''.
Network tube radiosDomesticRadiola of the 2nd class "Ural-57" has been produced since 1957 by the Ordzhonikidze Sarapul plant. The radiola consists of a 6-tube superheterodyne receiver and an electric player for ordinary and LP records. A set of parts and assemblies was also on sale, from which, having initial knowledge in radio engineering, it was possible to assemble a similar radio tape. Radiola is designed to operate in four ranges: DV and SV, two sub-bands KV-1 76 ... 40 m, KV-2 31 ... 25 m. Sensitivity in DV, SV 150 µV, at KV 250 µV. Sensitivity from the pickup jacks 180 mV. Selectivity on the adjacent channel in the ranges DV, SV 26 dB. AGC provides an 8 dB change at the output when the input voltage changes by 26 dB. There is a treble tone control. The range of reproducible sound frequencies is 100 ... 4000 Hz. Rated output power 1.5, maximum 4 W. Electric motor EPU asynchronous type DAG. Piezoelectric pickup ZPU-1. The radio system consists of two loudspeakers 2GD-ZL. Power consumption when receiving 80 W, when playing records 110 W. Power is supplied from an alternating current network with a voltage of 110, 127 or 220 V. The dimensions of the radio are 549x393x310 mm. Weight 24 kg. Radiola had a different range and color combinations of the body. The radio was released until 1963.
