• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1965

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 99023

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

• Number of Transistors
• 2

• Semiconductors
• 2SA53 2SB56 1N60

• Main principle
• TRF with diode detector; 1 AF stage(s); Reflex

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Sceptre Boy's Radio NTR-225 - Unknown - CUSTOM BUILT: Japan

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 105 x 70 x 35 mm / 4.1 x 2.8 x 1.4 inch

• Notes

• Einfach-Empfänger, für Export-Zollerleichterung nach USA von den Japanern als Spielzeug (Boy's Radio ) deklariert.

  Siehe auch ähnliches Modell Aniton Boy's Radio NTR-225.

• Source of data
• -- Schematic

• Mentioned in
• Transistor Radios 1954-68

• Author
• Model page created by Johann Nussbaum. See "Data change" for further contributors.

• Other Models

• Here you find 1141 models, 1004 with images and 96 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: Japan