- Country
 - Germany
 
- Manufacturer / Brand
 - UNBEKANNTE FIRMA D / A / CH - Siehe Anleitung unter der «Firma»
 
- Year
 - 1950 ??
 
- Category
 - Loudspeaker, headphone or earphone
 
- Radiomuseum.org ID
 - 205809
 
- 
        
- alternative name: Unknown, Custom Built
 
 
- Wave bands
 - - without
 
- Power type and voltage
 - No Power needed
 
- Loudspeaker
 - - Is a Headphone or Earphone / Ø 6.2 cm = 2.4 inch
 
- Material
 - Special material, described in the notes.
 
- from Radiomuseum.org
 - Model: Post-Kopfhörer - UNBEKANNTE FIRMA D / A / CH -
 
- Notes
 - 2 x 2000 Ohm, Kapseln aus Metall. Ohrmuscheln aus Bakelit. Eingeprägte Beschriftung: POST.
 
- Net weight (2.2 lb = 1 kg)
 - 0.4 kg / 0 lb 14.1 oz (0.881 lb)
 
- Author
 - Model page created by Siegmar Mey. See "Data change" for further contributors.
 
- Other Models
 - 
        
Here you find 475 models, 414 with images and 41 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from UNBEKANNTE FIRMA D / A / CH - Siehe Anleitung unter der «Firma» 
Collections
The model Post-Kopfhörer is part of the collections of the following members.