• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1946/1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 275392

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

• Number of Tubes
• 4

• Valves / Tubes
• UCH21 UCH21 UBL21 UY1N

• Main principle
• Superheterodyne (common); ZF/IF 452 kHz; 2 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; 220 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: S143U -01 - Siera; Belgien

• Shape
• Tablemodel, low profile (big size).

• Notes
• 3 Band reception:
  • LW: 708 - 2000 m.
  • BC: 200 - 585 m.
  • SW: 16,5 - 52 m.

  Connector for second low impedance loudspeaker.

  Tuning scale lightbulbs: 2 x 8095D (19V, 90mA)

  There is a model S143U without suffix and a different intermediate frequency.

  Attention: chassis connected to the mains !

• Mentioned in
• Technisch- Commercieel - Radio Vademecum Staleman

• Author
• Model page created by Dirk Bladt. 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