• Country
• Japan

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

• Year
• 1963–1965

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 240317

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

• Number of Transistors
• 9

• Semiconductors
• 2SA70 2SA103 2SA101 2SA101 2SB173 2SB171 2SB175 2SB178 2SB178 OA90

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Tuned circuits
• 5 AM circuit(s)

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

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Power out
• 0.3 W (0.5 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: National Panasonic 2 Band 9 Transistor R-905J - Panasonic, Matsushita,

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

• Dimensions (WHD)
• 8 x 4.75 x 2 inch / 203 x 121 x 51 mm

• Notes

• National Model R905

  Nine transistors, one diode, two-band portable. Supersensitive, noise-free reception, with AD Type transistor 2SA70 (OC170 )which works as R.F. amp. on the M/W band. Variable tone control and fine tuning control. Tuning - battery life magic meter and dial light for tuning in the dark. Jacks for earphones and/or external speaker. Independent battery compartment allows easy replacement of batteries. Plastic cabinet with leather case.

  Specifications: frequency range, M/W 525 - 1605 kC/s (kHz), S/W 5.9 - 18 MC/s (MHz). Power output, 500mW maximum. Speaker 4" x 3½" dynamic. 3 x UM-2 (C Cells) National flashlight batteries. Price and weight includes batteries. (MINGAY'S PRICE SERVICE)

  See also Model R-905H with different SW frequency range.

• Net weight (2.2 lb = 1 kg)
• 2 lb 1 oz (2.063 lb) / 0.936 kg

• Price in first year of sale
• 45.15 AUS £

• Mentioned in
• Mingay's Price Service (Feb 1964 to Feb 1965.)

• Literature/Schematics (1)
• J.R. Publications Transistor Radio Service Handbook (Group C1, 1964, Page N100.)

• Author
• Model page created by Manuel Henrique Oliveira-Jesus. See "Data change" for further contributors.

• Other Models

• Here you find 3053 models, 2830 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