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Since the beginning of July 1936, the net receiver lamp SI-236 has been produced by the Voronezh plant Elektrosignal, and later by the Moscow plant Himradio. The radio, in order not to violate the production plan, was urgently created on the basis of and instead of the radio set SP-236, which for several reasons did not go into production. "SI-236" Network Individual 2-circuit 36 "‹"‹years built according to the scheme of direct amplification on the lamps SO-148 (UHF), SO-124 (Detector) and SO-122 (Amplifier LF). The receiver is powered by AC power. No other information on the SI-236 radio has yet been found.