RA644-A (RA644-01)

Erres, Van der Heem NV; Den Haag

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  • Year
  • 1964
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 308935

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Number of Transistors
  • 3
  • Main principle
  • ZF/IF 470/10700 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)     10 FM circuit(s)
  • Wave bands
  • Broadcast, Long Wave, Short Wave plus FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 127; 220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 15 cm = 5.9 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: RA644-A - Erres, Van der Heem NV; Den
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 500 x 225 x 225 mm / 19.7 x 8.9 x 8.9 inch
  • Notes

  • Models RA644-A / RA644-01 deviate from model RA644 by having one additional transistor (2SA234) in an extra stage for FM-IF and additional fuses in the power supply section.

  • Mentioned in
  • -- Original-techn. papers.
  • Author
  • Model page created by Gidi Verheijen. See "Data change" for further contributors.

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