National Panasonic DR 28 RF-2800B

Panasonic, Matsushita, National ナショナル (also tubes); Osaka

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  • Year
  • 1978 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 303558

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

 Technical Specifications

  • Number of Transistors
  • 24
  • Main principle
  • Superhet, double/triple conversion
  • Wave bands
  • Broadcast, more than 2 SW bands plus FM or UHF.
  • Power type and voltage
  • Line / Batteries (any type) / 110-125; 220-240 / D: 6 x 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 10 cm = 3.9 inch
  • Power out
  • 3 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: National Panasonic DR 28 RF-2800B - Panasonic, Matsushita,
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 380 x 250 x 120 mm / 15 x 9.8 x 4.7 inch
  • Notes

  • National Panasonic DR 28 RF-2800B has six wave bands:

    FM 88-108 MHz
    MW 525-1605 kHz
    SW1 1600-3200 kHZ
    SW2 3.2-8 MHz
    SW3 8-16 MHz
    SW4 16-30 MHz

    The SW2/3/4 bands use double conversion (2MHz 1st IF, 455KHz 2nd IF), whereas the MW/SW1 use single conversion (455KHz). 

    This is a solid state radio, using 24 Transistors, 16 Diodes, and 5 IC's from Matsushita/Panasonic (AN7210 for AM Conv & FM/AM IF Amp,  AN7211 for FM IF Amp & FM/AM/SSB Det & Meter Amp, AN7212 for SW 1st Osc. & Mix & MW Osc, RVITD6101P-1 Divider for Counter Display, and RVIM54829P Counter & VFD Driver for Counter Display.  

    See also the similar model National Panasonic DR 28 RF-2800 LBS with additional LW range instead of an SW range.

  • Author
  • Model page created by Jose Mesquita. See "Data change" for further contributors.

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The model National Panasonic DR 28 is part of the collections of the following members.

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