• Country
• Soviet Union

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

• Year
• 1965–1981 ??

• Category
• Military Receiver

• Radiomuseum.org ID
• 88338

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 25

• Valves / Tubes
• 1Ж29Б 1Ж37Б 1Ж24Б

• Main principle
• Superhet, double/triple conversion

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Powered by external power supply or a main unit. / 110-127/220; (12) Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: R-309 - Industrial Union Proton;

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

• Notes
• 1.0 to 36 MHz (AM/CW) in eight ranges, turret tuner, projection tuning scale, variabe IF bandwith from 0.6 to 6 kHz; built in tube tester. External multi purpose power supply. Mainly used in sovjet special forces applications.

• Source of data
• -- Collector info (Sammler)

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

• Literature/Schematics (1)
• - - Manufacturers Literature

• Author
• Model page created by a member from D. See "Data change" for further contributors.

• 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