• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98639

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

• Number of Tubes
• 6

• Valves / Tubes
• S4VB SP4 SD4_Mullard 104V PM24M DW2X

• Main principle
• Superheterodyne (common); ZF/IF 115 kHz

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• Alternating Current supply (AC) / 103; 111; 116; 127; 135; 143; 155; 196; 210; 225; 240; 253 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: S.Super Six SS6 [dekoratives Gehäuse] - Siera; Belgien

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 410 x 490 x 220 mm / 16.1 x 19.3 x 8.7 inch

• Notes
• 2 Band reception:
  • LW: 850 - 2000 m.
  • BC: 200 - 600 m.
  Tuning scale light bulb type: 8046 (6V, 500mA).
  Loudspeaker Philips type 4281. Connectors for second loudspeaker and for pick-up. 
   
  See also variant Siera S.Super Six SS6 mit rechteckigem Gehäuse.
   
  This model is related to Ténor Super-Six but with different tubes.

  There is one schematic with this model coming from P.H.Brans (ID=474609). This schematic contains multiple errors: (as well as the one from J.G.R. Van Dijck, probably copied from Brans or vice-versa)

  1. Oscillator triode defined as SP4 (tetrode) - must be 104V (Mullard).
  2. I.F. tetrode defined as 104D (triode) - must be SP4 (Mullard).
  3. Rectifier BV2X is non-existent - must be DW2X (Mullard).
  4. I.F. defined at 420 kHz - very unlikely in 1933 - must be 115 kHz.

  Schematic ID=1939586 has been updated with data from the booklet "Siera memento of tubes and models 1932-1946" verified with a real model in original condition.

• Net weight (2.2 lb = 1 kg)
• 12 kg / 26 lb 6.9 oz (26.432 lb)

• Price in first year of sale
• 2,950.00 BFR

• Mentioned in
• - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)

• Literature/Schematics (1)
• Röhren-Vademecum; P.H. Brans; Antwerpen (p.243)

• Literature/Schematics (2)
• -- Schematic (Radio Schakelingen, J.G.R. van Dijck)

• Author
• Model page created by John Koster. See "Data change" for further contributors.

• Other Models

• Here you find 456 models, 414 with images and 188 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera; Belgien