• Country
• Germany

• Manufacturer / Brand
• Roland-Werk AG; Berlin

• Year
• 1925 ??

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 201901

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Special material, described in the notes.

• from Radiomuseum.org
• Model: Spulenkoppler - Roland-Werk AG; Berlin

• Dimensions (WHD)
• 100 x 60 x 45 mm / 3.9 x 2.4 x 1.8 inch

• Notes
• Spulenkoppler; Beschriftungen: Huth D.R.P. als Patentinhaber sowie ROLAND D.R.G.M. als Hersteller. Außer Buchsen, Schrauben und Steckachsen sind alle Bauteile aus Hartgummi.

• Net weight (2.2 lb = 1 kg)
• 0.2 kg / 0 lb 7 oz (0.441 lb)

• Author
• Model page created by Reiner Scholz. See "Data change" for further contributors.

• Other Models

• Here you find 6 models, 6 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Roland-Werk AG; Berlin