F-1 1937
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The loudspeaker "F-1" (Frischvinger) was produced from 1937 by the Moscow plant named after the 20th of October. Produced with and without stand. Designed to receive broadcast broadcast programs. A detailed description of the loudspeaker in the magazine "Radio Front" number 7 for 1938.
Documentation:
Information from collection of Valery Khartchenko