• Country
• Japan

• Manufacturer / Brand
• Gakken Co. Ltd.; Ohtaku, Tokyo

• Year
• 1999 ??

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 119963

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 1

• Semiconductors

• Main principle
• Crystal or Solid State Detector with Amplifer; Crystal-detection 1 circuit (no tubes)

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 1.5 Volt

• Loudspeaker
• - only for Earphone!

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Crystal Radio - Gakken Co. Ltd.; Ohtaku, Tokyo

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 310 x 330 x 95 mm / 12.2 x 13 x 3.7 inch

• Notes
• Die Rahmenantenne ist lose an den Detektor gekoppelt, was eine gute Trennschärfe ergibt. Die Empfindlichkeitseinbusse kann wahlweise durch Zuschalten einer HF-Verstärkerstufe mittels FET wettgtemacht werden. Gleichzeitig erhält der Detektor eine kleine Vorspannung zur Verringerung der Schwellspannung.

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

• Price in first year of sale
• 1,680.00 Yen

• Source of data
• - - Data from my own collection

• Author
• Model page created by Felix Schaffhauser. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 9 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gakken Co. Ltd.; Ohtaku, Tokyo