Detektor-Empfänger DF7
Dema GmbH; Berlin
- Country
- Germany
- Manufacturer / Brand
- Dema GmbH; Berlin
- Year
- 1931–1934
- Category
- Detector-Radio (Crystal or diode, without tubes/transistors)
- Radiomuseum.org ID
- 14137
-
- alternative name: Marx, A.
Illustrierter Radio Katalog 1932/33
- Main principle
- Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)
- Tuned circuits
- 1 AM circuit(s)
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- No Power needed
- Loudspeaker
- - For headphones or amp.
- Material
- Bakelite case
- from Radiomuseum.org
- Model: Detektor-Empfänger DF7 - Dema GmbH; Berlin
- Shape
- Tablemodel, with any shape - general.
- Dimensions (WHD)
- 108 x 38 x 132 mm / 4.3 x 1.5 x 5.2 inch
- Notes
-
DEMA Detektorempfänger DF7 für externe Steckspulen.
Siehe auch den äusserlich identischen Detektorempfänger RF3 mit eingebauter Spule für 600 m Wellenbereich.
- Price in first year of sale
- 3.00 RM
- External source of data
- E. Erb 3-907007-36-0
- Source of data
- Radio-Zentrale Prohaska 1933/34 / Radiokatalog Band 2, Ernst Erb
- Mentioned in
- Katalog Radio-Zentrale Prohaska 1931/32
- Picture reference
- Das Modell ist im «Radiokatalog» (Erb) abgebildet.
- Other Models
-
Here you find 7 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Dema GmbH; Berlin
Collections
The model Detektor-Empfänger is part of the collections of the following members.