S53A

Siera; Belgien

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  • Year
  • 1938/1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 97134

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 128 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21.5 cm = 8.5 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: S53A - Siera; Belgien
  • Shape
  • Tablemodel with Push Buttons.
  • Dimensions (WHD)
  • 535 x 355 x 230 mm / 21.1 x 14 x 9.1 inch
  • Notes
  • 3 Band reception:
    • LW: 720 - 2000 m.
    • BC: 195 - 585 m.
    • SW: 16,7 - 51 m.
    Tuning scale light bulbs type: 3 x 8045 (6,3V, 320mA). The booklet "Siera memento of tubes and models 1932-1946" mentions 3 light bulbs for this radio, where the schematic and Staleman mentions only 2.
     
    Some other properties:
    • Loudspeaker Philips type 9602, having an extra cone to reduce the beaming effect at high frequencies. 
    • Connectors for second loudspeaker and for pick-up. 
    • Variable selectivity coupled to the tone control. 
    • Eight preselection buttons and manual tuning. 
    • AF feedback circuitry to reduce distortion.
    This model is comparable with Philips 750A and Jura 53A .
     
    This model can be upgraded to an AC/DC set (see type S53U) by incorporating a vibrator (Price: 250 BEF).
  • Net weight (2.2 lb = 1 kg)
  • 15.6 kg / 34 lb 5.8 oz (34.361 lb)
  • Price in first year of sale
  • 2,750.00 BEF
  • Mentioned in
  • - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)
  • Literature/Schematics (1)
  • -- Original-techn. papers.
  • Author
  • Model page created by John Koster. See "Data change" for further contributors.

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