• Country
• Germany

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

• Year
• 1918 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 154811

• Main principle
• none

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Dreifach-Pyritdetektor ED104a - Telefunken Deutschland TFK,

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• Dreifach-Detektor, flache Form.

• Literature/Schematics (1)
• Telefunken-Stationen und -Geräte, Anfang 1919 (das "Blaue Buch")

• Author
• Model page created by Nikolaus Löwe. See "Data change" for further contributors.

• Other Models

• Here you find 3559 models, 3144 with images and 2111 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