• Country
• France

• Manufacturer / Brand
• Grammont (Radiofotos, Fotos); Paris, Malakoff

• Year
• 1924 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 316939

• • alternative name: Radiofotos || Société des lampes Fotos

• Number of Tubes
• 4

• Valves / Tubes
• TM TM TM TM

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries / 6 & 300 Volt

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

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Amplificateur de puissance a résistances D1 - Grammont Radiofotos, Fotos;

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 390 x 240 x 160 mm / 15.4 x 9.4 x 6.3 inch

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

• Other Models

• Here you find 163 models, 124 with images and 65 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Grammont (Radiofotos, Fotos); Paris, Malakoff