• Country
• Austria

• Manufacturer / Brand
• Robo, Wien

• Year
• 1927

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 207347

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Bosch-Ton-Kugelvariometer V - Robo, Wien

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• Vario-Kugelkoppler mit Einpunktbefestigung. Verwendung für Detektor- und Röhrengeräte.

• Author
• Model page created by Museum Roggenhofer. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Robo, Wien