- Country
- Germany
- Manufacturer / Brand
- Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
- Year
- 1928–1930
- Category
- Loudspeaker, headphone or earphone
- Radiomuseum.org ID
- 5641
- Loudspeaker
- Magnetic loudspeaker (reed) generic.
- Material
- Wooden case
- from Radiomuseum.org
- Model: Protos Rfl4 - Siemens & Halske, -Schuckert
- Dimensions (WHD)
- 500 x 350 x 200 mm / 19.7 x 13.8 x 7.9 inch
- Notes
- Baugleich mit Arcophon 3 und Telefunken Sihaphon (siehe dort).
- Net weight (2.2 lb = 1 kg)
- 4 kg / 8 lb 13 oz (8.811 lb)
- Price in first year of sale
- 75.00 RM
- Source of data
- Vox-Haus, Katalog 1926/1927 / Radiokatalog Band 1, Ernst Erb
- Mentioned in
- Katalog Radio-Zentrale Prohaska 1928
- Picture reference
- Das Gerät ist im Doppelband "Historische Radios" von Günther Abele abgebildet.
- Other Models
-
Here you find 2520 models, 2116 with images and 1329 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Collections
The model Protos is part of the collections of the following members.