• Year
  • 1932/1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 23150

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110-250 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: 820A - Philips akc. spol., Praha-
  • Dimensions (WHD)
  • 410 x 298 x 220 mm / 16.1 x 11.7 x 8.7 inch
  • Notes
  • Cabinet from hard bakelized paper and metal frames, bakelite mask, celluloid scale

    Grid detection on E424N.

  • External source of data
  • Erb

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