• Country
• Germany

• Manufacturer / Brand
• Seibt, Dr. Georg (Nachf.); Berlin, auch München

• Year
• 1927 ??

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

• Radiomuseum.org ID
• 248090

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

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sperrkreis EZ21 - Seibt, Dr. Georg Nachf.;

• Author
• Model page created by Martin Steyer. See "Data change" for further contributors.

• Other Models

• Here you find 416 models, 357 with images and 204 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Seibt, Dr. Georg (Nachf.); Berlin, auch München