• Country
• Denmark

• Manufacturer / Brand
• Groot's Radiotekniske Laboratorium; København

• Year
• 1950 ??

• Category
• Miscellaneous (Other, Various) - see notes

• Radiomuseum.org ID
• 207393

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Various materials

• from Radiomuseum.org
• Model: Quartz Crystal 5A1 - Groot's Radiotekniske

• Notes
• GEL Quartz Crystal 5A1;
  Frequency range see pictures.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Groot's Radiotekniske Laboratorium; København