• Country
• Hong Kong

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Hong Kong (HK)

• Year
• 1972 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 120674

• Number of Transistors
• 4

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 3 Volt

• Loudspeaker
• -Loudspeaker incorporated, but system not known. / Ø 5 cm = 2 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Protronic OSC-18 - Unknown - CUSTOM BUILT: Hong

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

• Dimensions (WHD)
• 65 x 115 x 35 mm / 2.6 x 4.5 x 1.4 inch

• Source of data
• - - Data from my own collection

• Author
• Model page created by Thomas Witkenkamp. See "Data change" for further contributors.

• Other Models

• Here you find 828 models, 738 with images and 19 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: Hong Kong (HK)