- Country
- Germany
- Manufacturer / Brand
- Grassmann, Peter, RFW, Radio-Funk-Werkstätten; vor 1945, Berlin & Neuhaldensleben
- Year
- 1927/1928
- Category
- Loudspeaker, headphone or earphone
- Radiomuseum.org ID
- 355028
Illustrierter Radio Katalog 1927/28
- Wave bands
- - without
- Power type and voltage
- No Power needed
- Loudspeaker
- Magnetic loudspeaker (reed) generic.
- Material
- Various materials
- from Radiomuseum.org
- Model: Helios Duplex - Grassmann, Peter, RFW, Radio-
- Shape
- Tablemodel, with any shape - general.
- Notes
-
Mit doppeltem Konus von verschiedener Größe und zwei Doppelsystem. Dadurch gute Wiedergabe hoher und tiefer Töne.
- Price in first year of sale
- 90.00 RM
- Mentioned in
- Illustrierter Radio-Katalog 1927/28 S.14
- Author
- Model page created by Andreas Dick. See "Data change" for further contributors.
- Other Models
-
Here you find 111 models, 76 with images and 30 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Grassmann, Peter, RFW, Radio-Funk-Werkstätten; vor 1945, Berlin & Neuhaldensleben