• Year
  • 1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 123177

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 2 AF stage(s)
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Direct Current supply (DC) / 110-130; 130-200; 200-250 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: 938C - Philips; Eindhoven tubes
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 320 x 350 x 220 mm / 12.6 x 13.8 x 8.7 inch
  • Notes
  • Reaction coils with fixed position; feedback regulated by C13.
    Grid Detection done by first tube B2099.
    LW, BC and SW are divided in 6 ranges:
    • I. 15-33 m.
    • II. 32-90 m.
    • III. 85-200 m.
    • IV. 200-400 m.
    • V. 400-950 m.
    • VI. 950-2000 m.
    Housing in Arbolite, front panel in Philite (Bakelite).
     
    The type of resistance tube is depending on the mains voltage:
    • type 1926: 110-130 Volt.
    • type 1927: 130-200 Volt.
    • type 1928: 200-250 Volt.
  • Net weight (2.2 lb = 1 kg)
  • 9.5 kg / 20 lb 14.8 oz (20.925 lb)
  • Price in first year of sale
  • 1,250.00 FF
  • Literature/Schematics (1)
  • -- Original-techn. papers.
  • Author
  • Model page created by Jean-Louis HEYD. See "Data change" for further contributors.

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