• Country
• United States of America (USA)

• Manufacturer / Brand
• Harpers International Inc.; New York

• Year
• 1957 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 108123

• Number of Transistors
• 4

• Semiconductors
• HJ23D HJ22D HJ15 HJ17D SD46

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 4 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: 4 Transistor - Harpers International Inc.;

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

• Dimensions (WHD)
• 130 x 75 x 40 mm / 5.1 x 3 x 1.6 inch

• Notes

• Made in Japan

• Net weight (2.2 lb = 1 kg)
• 0.370 kg / 0 lb 13 oz (0.815 lb)

• Mentioned in
• -- Collector info (Sammler)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 22 models, 19 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Harpers International Inc.; New York