• Country
• Germany

• Manufacturer / Brand
• ROKA, Robert Karst; Berlin

• Year
• 1930 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 354950

• Main principle
• Crystal or Solid State Detector

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Aufsteck-Detektor 849 - ROKA, Robert Karst; Berlin

• Shape
• Chassis only or for «building in»

• Author
• Model page created by Gunther Becher. See "Data change" for further contributors.

• Other Models

• Here you find 25 models, 24 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from ROKA, Robert Karst; Berlin