• Country
• South Korea

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

• Year
• 1986 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 353432

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 4

• Semiconductors
• MPS-A92 MPS-A92 2N3904 2N3904 ICL7126 1N4005 1S2462

• Wave bands
• - without

• Power type and voltage
• Dry Batteries

• Loudspeaker
• - - No sound reproduction output.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Digital Multimeter DM-105 - Hung Chang Co. Ltd., Protek;

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

• Notes

• Also sold as Demestres DM-105

• Literature/Schematics (1)
• -- Schematic

• Author
• Model page created by Miguel Bravo-Cos. See "Data change" for further contributors.

• Other Models

• Here you find 32 models, 29 with images and 18 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hung Chang Co. Ltd., Protek; Seoul