• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98638

• Number of Tubes
• 5

• Valves / Tubes
• S4VB MM4V 994V PM24M 1821

• Main principle
• TRF without regeneration

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

• Power type and voltage
• Alternating Current supply (AC) / 110-240 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Super Inductance S5S - Siera; Belgien

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

• Dimensions (WHD)
• 420 x 470 x 230 mm / 16.5 x 18.5 x 9.1 inch

• Notes
• Principle: Super Inductance. 2 Band reception:
  • LW: 850 - 2000 m.
  • BC: 200 - 600 m.
  Tuning scale light bulb: 6V, 300mA). Connector for second high impedance loudspeaker and for pick-up. 
   
  There is also a probably earlier Siera type S5S with a different loudspeaker, rectifier tube and tuning scale lightbulb. See the photos from the inside and the typeplate.

• Net weight (2.2 lb = 1 kg)
• 12.6 kg / 27 lb 12.1 oz (27.753 lb)

• Price in first year of sale
• 1,975.00 BEF

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

• Other Models

• Here you find 452 models, 413 with images and 181 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera; Belgien