• Year
  • 1977–1979
  • Category
  • Television Receiver (TV) or Monitor
  • Radiomuseum.org ID
  • 77705

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

 Technical Specifications

  • Number of Tubes
  • 1
  • Valves / Tubes
  • Number of Transistors
  • 26
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 38900/33400 kHz; 3 AF stage(s)
  • Wave bands
  • VHF incl. FM and/or UHF (see notes for details)
  • Power type and voltage
  • Line / Batteries (any type) / 220 / 9 x 1,5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8.5 cm = 3.3 inch
  • Power out
  • 0.35 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: National TR-525ES - Panasonic, Matsushita,
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 333 x 148 x 280 mm / 13.1 x 5.8 x 11 inch
  • Notes
  • Portable 5" b/w TV, VHF and UHF tuner. External 12-V-power supply possible.
    1 IC, 26 Transistors, 19 Diodes, 1 Thermistor, 1 H.V. Rectifier.
  • Net weight (2.2 lb = 1 kg)
  • 4 kg / 8 lb 13 oz (8.811 lb)

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The model National is part of the collections of the following members.

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