• Country
• France

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

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 95676

• • alternative name: SED

• Number of Tubes
• 4

• Valves / Tubes
• DW6 DW1508 or DW4023 DX3 D350B or D230B unknown_regulator

• Main principle
• TRF with regeneration; Screengrid 1926-1935

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

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

• Loudspeaker
• Magnetic loudspeaker (reed) generic. / Ø 30 cm = 11.8 inch

• Power out
• 3.8 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: RM3 - Ducretet -Thomson; avant:

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

• Dimensions (WHD)
• 455 x 420 x 195 mm / 17.9 x 16.5 x 7.7 inch

• Notes

• Utilise régulatrice 0,35 A - 25/75 volts.

• Net weight (2.2 lb = 1 kg)
• 11 kg / 24 lb 3.7 oz (24.229 lb)

• Price in first year of sale
• 2,000.00 Fr

• Mentioned in
• Le grand livre de la TSF (Doctsf Ref 7710)

• Literature/Schematics (1)
• -- Original prospect or advert

• Literature/Schematics (2)
• -- Original-techn. papers.

• Author
• Model page created by Marc Couque. 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