• Country
• France

• Manufacturer / Brand
• GMR (G.M.R.), Georg, Montastier et Rouge; Montrouge, Paris

• Year
• 1923 ??

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 295426

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Coupleur Coronna [2 bobines] - GMR G.M.R., Georg, Montastier

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 250 x 150 x 190 mm / 9.8 x 5.9 x 7.5 inch

• Notes

• Coupleur Coronna d'expérimentation à 2 bobines

• Net weight (2.2 lb = 1 kg)
• 0.5 kg / 1 lb 1.6 oz (1.101 lb)

• Author
• Model page created by Musée des Radios Museum. See "Data change" for further contributors.

• Other Models

• Here you find 130 models, 102 with images and 30 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from GMR (G.M.R.), Georg, Montastier et Rouge; Montrouge, Paris