• Country
• Soviet Union

• Manufacturer / Brand
• Moscow Telegraph Works (ex-Morse)

• Year
• 1927

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 91928

• Main principle
• Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)

• Wave bands
• Broadcast and LongWave in ONE range.

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: P-4 {П-4} - Moscow Telegraph Works ex-

• Shape
• Tablemodel, with any shape - general.

• Notes
• Set-in crystal detector. Rheostat type tuning.

• Mentioned in
• -- Collector info (Sammler)

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

• Other Models

• Here you find 6 models, 6 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Moscow Telegraph Works (ex-Morse)