• Country
• Soviet Union

• Manufacturer / Brand
• Industrial Union Proton; Charkov (Ukraine), see Charkov Radio Works N°158

• Year
• 1957–1981

• Category
• Commercial Receiver (may include amateur bands)

• Radiomuseum.org ID
• 117062

• Number of Tubes
• 19

• Valves / Tubes

• Main principle
• Superhet, double/triple conversion; 2 AF stage(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Powered by external power supply or a main unit. / 110-220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Rusalka-M R-670M {Р-670М} - Industrial Union Proton;

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 670 x 520 x 540 mm / 26.4 x 20.5 x 21.3 inch

• Notes
• Marine-Bezeichnung für R-250M. Völlig identisch.Separates Netzteil.

• Mentioned in
• V.I.Shapkin, The Red Ears, Moscow, 2003

• Other Models

• Here you find 5 models, 3 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Industrial Union Proton; Charkov (Ukraine), see Charkov Radio Works N°158