Sputnik transistor radio receiver.
Portable radio receivers and radios on p / p.DomesticThe transistor radio "Sputnik" was developed and experimentally produced in 1959 in Leningrad. The "Sputnik" radio receiver is assembled according to the superheterodyne circuit on 8 transistors. It allows you to receive radio stations in the ranges DV 1800 ... 750 m and SV 560 ... 210 m waves. The sensitivity when working on an internal antenna at medium waves is 1 ... 1.5 mV / m, at long 1.5 ... 2 mV / m, and when working on an external antenna, its sensitivity is respectively 200 and 300 μV. The intermediate frequency is 465 kHz. Maximum output power 160 mW. The receiver is powered by 4 D-0.2 batteries, voltage 5 V. The current consumption in the silent mode is 10 ... 13 mA, and at a maximum power of 60 mA. The radio is mounted in a wooden case in the form of a book, 140x120x30 mm in size. Its case is lined with celluloid, and the nested ribbon in the form of a bookmark also serves as a range switch. The installation is carried out on a getinax board with a size of 115x95 mm, in a hinged way. The weight of the radio receiver with accumulators is 450 g. The price of a radio set is 42 rubles 12 kopecks after the 1961 monetary reform.