• Country
• Germany

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

• Year
• 1933 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 149338

• Wave bands
• - without

• Power type and voltage
• No Power needed

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

• Material
• Metal case

• from Radiomuseum.org
• Model: 4-Polsystem E - Hegra, Hekra, Marke, Hermann

• Notes
• Lautsprecher-Antriebssystem. Preis im Melezinek Katalog (CZ, ca.1933): 116 Kč.

• Author
• Model page created by a member from SK. See "Data change" for further contributors.

• Other Models

• Here you find 117 models, 99 with images and 4 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