• Country
• Germany

• Manufacturer / Brand
• Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg

• Year
• 1931

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 182898

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Lautsprecher-Chassis Form E - Hegra, Hekra, Marke, Hermann

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• Lautsprecher-Chassis, eingebaut in Holzkonstruktion.

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

• Other Models

• Here you find 119 models, 109 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg