Changeur de Fréquence B-JDM
Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris
- Country
- France
- Manufacturer / Brand
- Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris
- Year
- 1925 ?
- Category
- Radio module pre 1926 (not a part, not a key)
- Radiomuseum.org ID
- 263951
-
- alternative name: SED
Collection privée (Ref: 2439)
Collection privée (Ref: 2439)
- Number of Tubes
- 1
- Valves / Tubes
- Main principle
- RF Converter/Adapter (not voltage converter)
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- Storage Battery for all (e.g. for car radios and amateur radios)
- Loudspeaker
- - For headphones or amp.
- Material
- Wooden case, TUBES VISIBLE.
- from Radiomuseum.org
- Model: Changeur de Fréquence B-JDM - Ducretet -Thomson; avant:
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Notes
-
Dual-grid tube: Bigrille Ducretet. Frequency changer for loop or antenna reception.
- Literature/Schematics (3)
- Le Guide du Collectionneur TSF Biraud/Foster, Vol. I (page 157)
- Author
- Model page created by Ernst Erb. See "Data change" for further contributors.
- Other Models
-
Here you find 655 models, 518 with images and 286 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris
Collections
The model Changeur de Fréquence is part of the collections of the following members.