Tube network radio receiver "SI-236".

Tube radios.DomesticSince the beginning of July 1936, the network tube radio receiver "SI-236" has been produced by the Voronezh plant "Electrosignal", and later by the Moscow plant "Khimradio". The radio receiver, so as not to violate the production plan, was urgently created by the plant on the basis and instead of the SP-236 radio receiver, which for a number of reasons did not go into production. "SI-236" Network Individual 2-circuit 36 ​​years old is assembled according to the direct amplification scheme on SO-148 (UHF), SO-124 (Detector) and SO-122 (LF Amplifier) ​​lamps. The receiver is powered from the AC mains. Other information on the SI-236 radio has not yet been found.