• Country
• France

• Manufacturer / Brand
• Hurm, Horace, Hurm et Duprat; Paris

• Year
• 1930/1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 264640

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• Superheterodyne (common)

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

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Various materials

• from Radiomuseum.org
• Model: Moduladyne IV-31 - Hurm, Horace, Hurm et Duprat;

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes

• Changeur de fréquence à 4 lampes.

  S'aliment par piles, accu ou secteur (détails à determiner).

• Price in first year of sale
• 675.00 FRF

• Mentioned in
• -- Original prospect or advert (La Science et la Vie, Juin 1930)

• Literature/Schematics (1)
• La Nature, 1931 1er, p.184

• Literature/Schematics (3)
• Le Guide du Collectionneur TSF Biraud/Foster, Vol. I (page 205)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 41 models, 38 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hurm, Horace, Hurm et Duprat; Paris