• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1966

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 272465

• Number of Transistors
• 8

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 cm = 2.1 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Dynamic 8 Transistor DR-820 - Unknown - CUSTOM BUILT: Japan

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

• Dimensions (WHD)
• 62 x 108 x 30 mm / 2.4 x 4.3 x 1.2 inch

• Notes

• Dynamic DR-820 8 transistor radio ABS cabinet with leather case

• Net weight (2.2 lb = 1 kg)
• 0.208 kg / 0 lb 7.3 oz (0.458 lb)

• Author
• Model page created by Eckhard Wegner. 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