S425U

Siera; Belgien

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  • Year
  • 1945
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 99037

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 452 kHz; 1 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Power type and voltage
  • AC/DC-set / 110; 125; 200; 220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 17 cm = 6.7 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: S425U - Siera; Belgien
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 490 x 330 x 250 mm / 19.3 x 13 x 9.8 inch
  • Notes
  • 3 Band reception:
    • LW: 750 - 2000 m.
    • BC: 192 - 575 m.
    • SW: 15,5 - 51 m.
    Tuning scale light bulbs type: 2 x 8095 (19V, 90mA).
    Loudspeaker Philips type 9708. Connectors for second loudspeaker and for pick-up. 
     
    This model is comparable with Philips 625U. See also Telefunken 365GWK Sw (Philips Eindhoven origin) with foldable lid above the slanted dial.
     
    The booklet "Siera memento of tubes and models 1932-1946" mentions a EBL21 as LF output amplifier, which is clearly wrong.

    Attention: chassis connected to the mains !

  • Net weight (2.2 lb = 1 kg)
  • 8.2 kg / 18 lb 1 oz (18.062 lb)
  • Mentioned in
  • - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)
  • Author
  • Model page created by John Koster. See "Data change" for further contributors.

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