• Country
• Germany

• Manufacturer / Brand
• ROKA, Robert Karst; Berlin

• Year
• 1934–1939

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

• Radiomuseum.org ID
• 16843

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

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

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Detektor-Empfänger 1191 - ROKA, Robert Karst; Berlin

• Dimensions (WHD)
• 90 x 25 x 110 mm / 3.5 x 1 x 4.3 inch

• Notes
• mit Drehko und Spule.

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Funkgeschichte der GFGF (9502)

• Other Models

• Here you find 24 models, 23 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