• Country
• Germany

• Manufacturer / Brand
• Fernfunk, Gesellschaft für drahtlose Telefonie mbH; Berlin

• Year
• 1929

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 14549

• • Brand: GRB, Ges. für Radiobedarf mbH

• Number of Tubes
• 4

• Valves / Tubes
• REN1004 REN1004 RE604 1701

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110; 220 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Kraftverstärker W1 - Fernfunk, Gesellschaft für

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

• Price in first year of sale
• 222.50 RM

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Radiokatalog Band 2, Ernst Erb

• Circuit diagram reference
• Röhren in FS-Bestückungstabellen

• Mentioned in
• A. Stark, Preisliste 1929

• Other Models

• Here you find 66 models, 41 with images and 5 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fernfunk, Gesellschaft für drahtlose Telefonie mbH; Berlin