Network tube radios '' 7N-27 '' and '' Vostok ''.
Tube radios.DomesticSince 1945, Novosibirsk Radio Plant No. 590 NKEP, MPSS has been producing vacuum tube radio receivers of the "7N-27" and "Vostok" type. At the end of 1944, the plant developed and prepared for production the 7N-27 radio receiver, which stands for 7-lamp, Desktop, 27 development. After a small batch released, the radio was modernized and began to be referred to as `` Vostok ''. A push-pull low-frequency power amplifier on 2 6F6S tubes was replaced by a single-ended on a 6P3S lamp, and the mains voltage and fuse switching block from the power transformer was moved to the rear wall of the chassis. Nothing else has been changed. Any of the radio receivers operates from an alternating current electrical network in the ranges DV 150 ... 420 kHz, SV 520 ... 1600 kHz, as well as in two HF sub-bands 4.3 ... 10 MHz and 11.5 ... 15 , 6 MHz. The average output power of the receiver amplifier is 3.5 W. Power consumption from the network is about 100 watts. The dimensions of the radio receiver are 585x345x272 mm. Its weight is 18 kg.
