• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1964 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 185623

• Number of Transistors
• 2

• Semiconductors
• 2SA100 2SB136

• Main principle
• TRF with diode detector

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2 inch = 5.1 cm

• Material
• Plastics (no bakelite or catalin)

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

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

• Dimensions (WHD)
• 2.5 x 4.125 x 1.25 inch / 64 x 105 x 32 mm

• Notes
• Boy's Radio that uses the case as the King or Queen radios.

• Net weight (2.2 lb = 1 kg)
• 0.5 lb (0 lb 8 oz) / 0.227 kg

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

• Author
• Model page created by Tom Guest. See "Data change" for further contributors.

• Other Models

• Here you find 1140 models, 1002 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