• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1955 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 117232

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1T4 1S5 3S4

• Main principle
• Superheterodyne (common); 1 AF stage(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 67,5 & 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 cm = 2 inch

• Power out
• 0.27 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: International MPR-100 - Unknown - CUSTOM BUILT: Japan

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

• Dimensions (WHD)
• 155 x 100 x 55 mm / 6.1 x 3.9 x 2.2 inch

• Notes

• See similar models Amico MPR-100, Kent MPR-100, Oceana PR-640, Skymaster

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Antonio Antunes. See "Data change" for further contributors.

• Other Models

• Here you find 1134 models, 996 with images and 97 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: Japan