• Country
• Belgium

• Manufacturer / Brand
• SBR Société Belge Radio-Electrique, Bruxelles

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 228437

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

• Number of Tubes
• 6

• Valves / Tubes
• A441N A425 A425 A415 A409 B405

• Main principle
• Superheterodyne (common)

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

• Power type and voltage
• Storage and/or dry batteries / 4 & 120 & -15 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Changeur de fréquence bigrille - SBR Société Belge Radio-

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

• Notes
• • The "BIG-SIX 31" was on sale in 3 versions: fully factory assembled, partially factory assembled or as a kit.
  • With the partially assembled kit, the so-called "MBF" block was provided, which contains all vital parts of the radio.
  • It was delivered with a loop antenna "Petit".
  • The radio could also be used with a M30 power supply.

• Author
• Model page created by Dirk Bladt. See "Data change" for further contributors.

• Other Models

• Here you find 711 models, 659 with images and 384 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from SBR Société Belge Radio-Electrique, Bruxelles