• Country
• Germany

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

• Year
• 1931/1932

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 73358

• Power type and voltage
• No Power needed

• Loudspeaker
• Magnetic loudspeaker (reed) of high quality (4 magnet poles).

• Material
• Wooden case

• from Radiomuseum.org
• Model: MK1 - Hegra, Hekra, Marke, Hermann

• Dimensions (WHD)
• 415 x 380 x 180 mm / 16.3 x 15 x 7.1 inch

• Notes
• Anpassungsmöglichkeit für verschiedene Endröhren.

• Price in first year of sale
• 48.00 RM

• Source of data
• Katalog Radio-Zentrale Prohaska 1931/32 / Radiokatalog Band 2, Ernst Erb

• Author
• Model page created by Wolfgang Eckardt. 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