• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98782

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

• Number of Tubes
• 6

• Valves / Tubes
• FC4 VP4A 2D4 SP4 Pen4VA DW2X

• Main principle
• Superheterodyne (common); ZF/IF 115 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and Short Wave.

• Details
• Visual Tuning Indicator pre Eye

• Power type and voltage
• Alternating Current supply (AC) / 105-260 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: S38A [Mullard tubes] - Siera; Belgien

• Shape
• Tablemodel, high profile (upright - NOT Cathedral nor decorative).

• Dimensions (WHD)
• 400 x 490 x 230 mm / 15.7 x 19.3 x 9.1 inch

• Notes

• 3 Band reception:

  • LW: 700 - 1900 m
  • BC: 170 - 580 m
  • SW: 16.7 - 51 m

  Tuning scale light bulbs type: 2 x 8046 (6 V / 500 mA).
  Loudspeaker Philips type unknown but with permanent magnet.
  Connectors for a second high impedance loudspeaker and a pick-up.
  Cabinet in varnished walnut veneer.

  There is also a version S38A with Philips tubes.

• Net weight (2.2 lb = 1 kg)
• 18.5 kg / 40 lb 12 oz (40.749 lb)

• Price in first year of sale
• 2,650.00 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.

• Other Models

• Here you find 437 models, 396 with images and 177 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera; Belgien