- Country
- France
- Manufacturer / Brand
- Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris
- Year
- 1930/1931
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 103976
-
- alternative name: SED
From auction website Marktplaats.
From auction website Marktplaats.
From auction website Marktplaats.
Aus Werbeblatt Ducretet 1931
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 5
- Number of Transistors
- Semiconductors
- unknown_ballast
- Main principle
- Superheterodyne (common)
- Wave bands
- Broadcast (MW) and Long Wave.
- Power type and voltage
- Alternating Current supply (AC) / 110; 150; 220 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Wooden case
- from Radiomuseum.org
- Model: CF4 - Ducretet -Thomson; avant:
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Dimensions (WHD)
- 460 x 245 x 295 mm / 18.1 x 9.6 x 11.6 inch
- Notes
-
Appareil prévu pour réception sur cadre. Utilise une lampe régulatrice 0.55 A, 20/75 V.
Même caractéristiques techniques que modèle CM4, sauf la liaison MF utilise un couplage à résonance (CM4 : par transformateur).
Prix sans lampes, prix pour l'installation complète à partir de 3875 Fr.
- Net weight (2.2 lb = 1 kg)
- 12.5 kg / 27 lb 8.5 oz (27.533 lb)
- Price in first year of sale
- 2,350.00 FRF
- Mentioned in
- -- Original prospect or advert (Le Journal, 14.01.1931)
- Literature/Schematics (1)
- -- Original-techn. papers.
- Author
- Model page created by John Koster. See "Data change" for further contributors.
- Other Models
-
Here you find 657 models, 523 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 is part of the collections of the following members.
Forum contributions about this model: Ducretet -Thomson;: CF4
Threads: 1 | Posts: 3
Im Schaltbild 2 hat sich ein Fehler eingeschlichen : der Koppelkondensator 20nF zwischen DW1508 und R80 koppelt vor dem Lastwiderstand die stabilisierte Versorgungsspannung aus. Da bleibt die R80 stumm!
Im Schaltbild 1 ist er richtigerweise nach dem Lastwiderstand anodenseitig angekoppelt und überträgt so die entstandene NF-Welle.
Dietmar Herian, 24.Sep.21