• Country
• South Korea

• Manufacturer / Brand
• Hung Chang Co. Ltd., Protek; Seoul

• Year
• 2000 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 261722

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 2 x 1,5 Volt

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Clamp Meter 640D - Hung Chang Co. Ltd., Protek;

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

• Dimensions (WHD)
• 70 x 230 x 33 mm / 2.8 x 9.1 x 1.3 inch

• Notes

• Clamp meter digital.

• Net weight (2.2 lb = 1 kg)
• 0.350 kg / 0 lb 12.3 oz (0.771 lb)

• Author
• Model page created by Manuel Albano Neves. See "Data change" for further contributors.

• Other Models

• Here you find 31 models, 28 with images and 17 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hung Chang Co. Ltd., Protek; Seoul