• Country
• Germany

• Manufacturer / Brand
• Nora, Aron, Heliowatt; Berlin

• Year
• 1930 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 86409

• Power type and voltage
• No Power needed

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Doppel-Kopfhörer 2 x 1000 Ohm - Nora, Aron, Heliowatt; Berlin

• Notes

• Kapseldurchmesser: 57 mm; Dicke: 23 mm.

• Net weight (2.2 lb = 1 kg)
• 0.3 kg / 0 lb 10.6 oz (0.661 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Bernd P. Kieck. See "Data change" for further contributors.

• Other Models

• Here you find 633 models, 555 with images and 342 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Nora, Aron, Heliowatt; Berlin