National Panasonic 2 Band 10-Transistor R-237H

• Country
• Japan

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

• Year
• 1966 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 161058

• Picture
• Schematics

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

• Number of Transistors
• 10

• Semiconductors
• 2SA341 2SA101 2SA101 2SB175 2SB172 2SB173 2SB175 2SB175 2SB178 2SB178 OA90 OA90

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

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 cm = 3.1 inch

• Power out
• 0.3 W (0.5 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: National Panasonic 2 Band 10-Transistor R-237H - Panasonic, Matsushita,

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

• Dimensions (WHD)
• 203 x 131 x 43 mm / 8 x 5.2 x 1.7 inch

• Notes

• National Panasonic R-237H 2-Band 10-Transistor;

  Frequency Range
  MW: 525 - 1605 kHz,
  SW: 3.9 - 12 MHz,
  Tuning indicator light, Dial light, Tone high/low, Earphones and ext. antenna-in port, Chrome speaker grille, sold with brown carrying leather case.

  Weight with batteries.

  See also model R-237J with different SW band reception.

• Net weight (2.2 lb = 1 kg)
• 1.1 kg / 2 lb 6.8 oz (2.423 lb)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 2987 models, 2764 with images and 621 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