• Country
• France

• Manufacturer / Brand
• Radio-Opéra, Guillain & Cie; Paris

• Year
• 1923–1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 258118

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF with regeneration

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

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Poste Piano à 4 lampes - Radio-Opéra, Guillain & Cie;

• Shape
• Miscellaneous shapes - described under notes.

• Notes

• Poste récepteur Radio-Opéra à 4 lampes, forme «Piano».

  Construit par Ducretet, voir Piano CFL 4 lampes.

• Price in first year of sale
• 720.00 FRF

• Mentioned in
• Lectures pour tous, Sept. 1924

• Literature/Schematics (1)
• Science et Industries Photographiques, 1. Dec. 1924

• Literature/Schematics (2)
• La Science et la vie, No. 90, Dec. 1924

• Literature/Schematics (3)
• Je sais tout, 1923

• Other Models

• Here you find 48 models, 6 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio-Opéra, Guillain & Cie; Paris