• Country
• Germany

• Manufacturer / Brand
• Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH

• Year
• 1920

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 133862

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• RE11 RE11 RE11 RE11

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries / 6 & 50 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Niederfrequenzverstärker EV-255 - Telefunken Deutschland TFK,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 220 x 180 x 175 mm / 8.7 x 7.1 x 6.9 inch

• Notes
• Dreifach-Niederfrequenzverstärker EV-255.

• Net weight (2.2 lb = 1 kg)
• 4 kg / 8 lb 13 oz (8.811 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Sándor Selyem-Tóth. See "Data change" for further contributors.

• Other Models

• Here you find 3561 models, 3146 with images and 2113 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH