• Country
• France

• Manufacturer / Brand
• Ducretet (-Thomson; avant: Fernand Ducretet et Ernest Roger etc.); Paris

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 326044

• • alternative name: SED

• Number of Tubes
• 4

• Valves / Tubes
• 35 or 635 24 or 624 47 or 647 80 or 680

• Number of Transistors

• Semiconductors
• unknown_ballast

• Main principle
• TRF with regeneration

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Details
• Record Player (not changer)

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Radio-phono R4 - Ducretet -Thomson; avant:

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Notes

• Radio-phono équipé du châssis R4 (1° ou 2° modèle).

• Mentioned in
• L'Illustration (18.04.1933)

• 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