• Country
• Belgium

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

• Year
• 1936/1937

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 31076

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

• Number of Tubes
• 10

• Valves / Tubes
• 6D6 6A7 6D6 6H6 6G5 6C5 6L7 42 42 80

• Main principle
• Superhet with RF-stage; ZF/IF 123 kHz; something special ? Please give information (notes)

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 130; 140; 220; 240 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 26 cm = 10.2 inch

• Power out
• 10 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Super Ondolina 837A - SBR Société Belge Radio-

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

• Dimensions (WHD)
• 452 x 585 x 346 mm / 17.8 x 23 x 13.6 inch

• Notes
• • Very powerfull output with 2 tubes in push-pull and a 26 cm speaker behind an acoustic lens: around 10 Watt.
  • In this radio, the 6C5 tube acts as a dynamics expander to restore the original dynamic range of the sound. The dynamic range of the studio sound was (and is today) often compressed to avoid weak sounds to be inaudible or strong sounds to be overmodulated. A sort of Dolby NR. Quite a luxury in those days and even today not obvious. See pages sbr_837a_descr3 & ...4 in the 'documents' - 'all schematics' menu.

• Net weight (2.2 lb = 1 kg)
• 25.6 kg / 56 lb 6.2 oz (56.388 lb)

• Price in first year of sale
• 3,350.00 BFr

• Mentioned in
• Manuel de la Radio 1940, van Cortenberghe

• Author
• Model page created by Bruno Brasseur. 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