Network tube radio receiver "Dnipro-52" and "Dnipro-56".
Tube radios.DomesticSince 1952, the Dnipro-52 tube network radio receiver of the 2nd class has been producing the Dnepropetrovsk radio plant. The radio receiver is designed to receive radio stations and to listen to a recording when an external EPU pickup is connected. The radio receiver is assembled on 5 radio tubes: 6A7, 6K7, 6G7, 6P6S and 6Ts5S. Frequency and wave ranges: DV - 150 ... 415 kHz (2000 ... 723 m); SV - 520 ... 1600 kHz (577 ... 187 m); HF - 3.95 ... 12.1 MHz (76 ... 24.7 m). IF 465 kHz. Sensitivity in the ranges DV, SV 100 ... 150 μV, KV 250 μV. Selectivity in the adjacent channel 26 dB, mirror in LW 50 dB, SV 32 dB, HF 24 dB. Output power 0.5 W. Power consumption 35 W. Receiver dimensions 420x280x220mm. Weight 7.5 kg. The price after the monetary reform of 1961 is 43 rubles 10 kopecks. Since 1956, the plant has been producing a modernized receiver "Dnipro-52" which, in terms of design, electrical circuit, (except for the installation of a power transformer, instead of an autotransformer and the corresponding changes in the circuit and installation) and design did not differ from that described. In the electrical circuit of the receiver, it is referred to as "Dnipro-56". However, until 1956, the plant also produced small batches of receivers with a transformer, they can be easily distinguished by the "antenna" and "ground" sockets, when, as in a receiver with an autotransformer, there was only an antenna socket. The plant and receivers were produced in a white plastic case (in small quantities), from what year it was not possible to install, but with both options for power transformers. Radios were also produced with various types of loudspeakers.
