• Country
• Japan

• Manufacturer / Brand
• Panasonic, Matsushita, National ナショナル (also tubes); Osaka

• Year
• 1968 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 258193

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

• Number of Transistors
• 12

• Semiconductors
• 2SA341 2SA101 2SA101 2SB175 2SB175 2SB173 2SB175 2SB175 2SB176 2SB176 2SB176 2SB176 OA70 OA90

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Dry Batteries / D: 3 x 1,5 Volt

• Loudspeaker
• 2 Loudspeakers / Ø 9 cm = 3.5 inch

• Power out
• 0.4 W (0.7 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: National Panasonic 4 Band 12 Transistor R-457 - Panasonic, Matsushita,

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 262 x 156 x 63 mm / 10.3 x 6.1 x 2.5 inch

• Notes

• National Panasonic 4 Band 12 Transistor 2 Speaker

  Frequency Ranges:

  MW: 525 - 1605 kHz
  SW1: 1.6 - 4.5 MHz
  SW2: 4.5 - 12 MHz
  SW3: 12 - 26.1 MHz

  Two dial lights, Two earphone or external speaker Jacks, External antenna and earth jacks, Tuning indicator, Fine tuning, Parallel Push-Pull.

  Weight with batteries.

• Net weight (2.2 lb = 1 kg)
• 1.550 kg / 3 lb 6.6 oz (3.414 lb)

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Daniel Rosha. See "Data change" for further contributors.

• Other Models

• Here you find 3074 models, 2851 with images and 635 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Panasonic, Matsushita, National ナショナル (also tubes); Osaka