• Country
• Germany

• Manufacturer / Brand
• ROKA, Robert Karst; Berlin

• Year
• 1935 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 163048

• Main principle
• Crystal or Solid State Detector; none

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

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

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 29 x 30 x 8 mm / 1.1 x 1.2 x 0.3 inch

• Notes
• Fest eingestellter Detektor von der Größe und Form einer Steckbrücke. 4 mm Stifte, 19 mm Abstand.

• Net weight (2.2 lb = 1 kg)
• 0.010 kg / 0 lb 0.4 oz (0.022 lb)

• Author
• Model page created by Nikolaus Löwe. 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