• Country
• Belgium

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

• Year
• 1924 ?

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 228318

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

• Main principle
• RF-Circuit or wave trap (separate, can also be an antenna with amp.)

• Tuned circuits
• 1 AM circuit(s)

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• from Radiomuseum.org
• Model: Filter RF 29 - SBR Société Belge Radio-

• Shape
• Tablemodel, with any shape - general.

• Notes
• • RF filter to eliminate an unwanted signal (notch filter).
  • The unit had to be coupled to the antenna and ground connectors of the radio.
  • It had to be tuned to the interfering transmitter frequency to filter it out and leaving the desired transmitter signal unaffected.

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

• Other Models

• Here you find 718 models, 666 with images and 391 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from SBR Société Belge Radio-Electrique, Bruxelles