• Country
• Soviet Union

• Manufacturer / Brand
• MEMZA Electromechanical Works (ex VTU), Moscow

• Year
• 1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 162580

• Number of Tubes
• 4

• Valves / Tubes
• СО-183 СО-182 СО-185 СО-187

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Power type and voltage
• Alternating Current supply (AC) / 110; 127; 220 Volt

• Loudspeaker
• Presumably Dynamic Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: SI-646 {СИ-646} - MEMZA Electromechanical Works

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Notes
• Coverage MW(200-550m), LW(714-2000m, SW(19-50m). Used silent tuning optoscope.
  Experimental model - not serie production.

• Mentioned in
• R. Malinin "Radio sets" 1937, Moscow

• Author
• Model page created by Zenonas Langaitis. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 18 with images and 16 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MEMZA Electromechanical Works (ex VTU), Moscow