Ondolina 733C3

SBR Société Belge Radio-Electrique, Bruxelles

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  • Year
  • 1932/1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 148043

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • TRF without regeneration; Anode bend detection
  • Tuned circuits
  • 3 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Direct Current supply (DC) / 220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Ondolina 733C3 - SBR Société Belge Radio-
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes
    • The 733x models are based on the chassis of the corresponding 433x models where the power amplifier is mounted on a separate chassis from the radio and with 2 output tubes in parallel. 
    • The tube line-up is 4 tubes from the radio section first, then 3 tubes from the amplifier section. The current regulators are mentioned but not counted as tubes.
    • These units were powerfull enough to be used in halls like dancings, cinemas.
    • SBR produced the following models 733:
      • 733x3: luxury console;
      • 733x4: luxury console with pick-up;

    where 'x' represents 'A' (AC mains) or 'C' (DC mains, 220V).
     

    • The "251_Ballast" current regulator (250mA; 60-180volt) can be replaced by any other brand of current regulator with the same or better specifications and the same foot (B4), like the Marconi "251_MOV" or the Philips "1934".
  • Price in first year of sale
  • 4,800.00 BFr
  • Mentioned in
  • "Radio Schakelingen" (J.G.R. van Dijck)
  • Author
  • Model page created by Gidi Verheijen. See "Data change" for further contributors.

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