• Country
• Germany

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

• Year
• 1931 ??

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 130061

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Sperrkreis [Kleine Ausführung] - Telefunken Deutschland TFK,

• Shape
• Miscellaneous shapes - described under notes.

• Dimensions (WHD)
• 52 x 52 x 35 mm / 2 x 2 x 1.4 inch

• Notes
• Quadratisch, flach für MW, zum Anstecken an die Antennenbuchse des Gerätes.

• Net weight (2.2 lb = 1 kg)
• 0.1 kg / 0 lb 3.5 oz (0.22 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Detlef Kraus. See "Data change" for further contributors.

• Other Models

• Here you find 3557 models, 3142 with images and 2108 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