• Country
• Germany

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

• Year
• 1916

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 203871

• Number of Tubes
• 2

• Valves / Tubes
• EVN171 EVN171

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

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

• Material
• Wooden case, TUBES VISIBLE.

• from Radiomuseum.org
• Model: Zweiröhren-Niederfrequenzverstärker EV89d [EVN171] - Telefunken Deutschland TFK,

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Dimensions (WHD)
• 200 x 180 x 90 mm / 7.9 x 7.1 x 3.5 inch

• Notes
• Zweiröhren-Niederfrequenzverstärker EV89d, ab Oktober 1916 mit zwei EVN171. Verstärkung 150-fach.

• Net weight (2.2 lb = 1 kg)
• 3.9 kg / 8 lb 9.4 oz (8.59 lb)

• Author
• Model page created by a member from D. 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