S34A Tubes AK1, AF2, AB1

Siera; Belgien

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  • Year
  • 1934
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 275429

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 104 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 105-115; 120-130; 140-160; 210-230; 240-260 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: S34A [Tubes AK1, AF2, AB1] - Siera; Belgien
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 540 x 300 x 220 mm / 21.3 x 11.8 x 8.7 inch
  • Notes
  • 2 Band reception:
    • LW: 760 - 1900 m.
    • BC: 200 - 550 m.
    Tuning scale light bulb type: 8046 (6V, 500mA).
    Loudspeaker Philips type 4281. Connectors for second loudspeaker and for pick-up. 
    S34A has a varnished walnut and marquetry cabinet.
    There is also a model S34A with Mullard tubes.
     
    The schematic and a Siera literature source mention output tube PH24M instead of PM24M.

    A schematic equivalence with Philips 521A exists.

  • Mentioned in
  • - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)
  • Author
  • Model page created by Dirk Bladt. See "Data change" for further contributors.

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