• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1970 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 307676

• Number of Transistors
• 5

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Various materials

• from Radiomuseum.org
• Model: Invicta Radio Headphone Transistor 5 500 - Unknown - CUSTOM BUILT: Japan

• Shape
• Miscellaneous shapes - described under notes.

• Notes

• Headphones with integrated AM radio, no jack.

  Made in Japan.

• Other Models

• Here you find 1142 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