• Country
• Great Britain (UK)

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: GB

• Year
• 1925 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 245293

• Main principle
• Crystal or Solid State Detector

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Wavelength Permanent Detector - Unknown - CUSTOM BUILT: GB

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

• Other Models

• Here you find 117 models, 107 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: GB