• Country
• Germany

• Manufacturer / Brand
• Kätsch GmbH, Paul (Logo PK); Sömmerda bei Erfurt

• Year
• 1931 ??

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

• Radiomuseum.org ID
• 342222

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

• Tuned circuits
• 1 AM circuit(s)

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Sperrkreis - Kätsch GmbH, Paul Logo PK;

• Dimensions (WHD)
• 130 x 130 x 80 mm / 5.1 x 5.1 x 3.1 inch

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Author
• Model page created by Alfons Lammers. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kätsch GmbH, Paul (Logo PK); Sömmerda bei Erfurt