• Country
• Germany

• Manufacturer / Brand
• Birgfeld AG, W.A; Berlin

• Year
• 1924 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 120386

• • Brand: Broadcast AG

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Various materials

• from Radiomuseum.org
• Model: Dr. Nesper Phone - Birgfeld AG, W.A; Berlin

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 210 x 200 x 60 mm / 8.3 x 7.9 x 2.4 inch

• Notes
• Einstellbarer Kopfhörer von 2 x 2000 Ohm.

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Source of data
• Historische Radios Band V

• Mentioned in
• Der Radio-Amateur; Nesper (62) (S. 290 B)

• Author
• Model page created by Nikolaus Löwe. See "Data change" for further contributors.

• Other Models

• Here you find 20 models, 15 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Birgfeld AG, W.A; Berlin