Hera 641A

• Country
• Belgium

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

• Year
• 1950

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98457

• Picture
• Schematics

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

• Number of Tubes
• 5

• Valves / Tubes
• UCH41 UF41 UAF42 UL41 UY41

• Main principle
• Superheterodyne (common); ZF/IF 484 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 110; 130; 225 Volt

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

• Power out
• 3.5 W (unknown quality)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Hera 641A - SBR Société Belge Radio-

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

• Dimensions (WHD)
• 11 x 10 x 8 inch / 279 x 254 x 203 mm

• Notes

• Staleman's Radio Vademecum mentions the tube line-up ECH41 EF41 EAF42 EL41 AZ41. No actual sets with this line-up are known as of this moment so it is assumed to be erroneous.

  The 641A uses U-tubes and an autotransformer for the high voltage. A secondary winding of 6,3 Volt is only used for the scale lamps.

  Attention: although this model has an "A" as suffix, the chassis is connected to the mains !
  We do not always tell in such situations since only trained persons should work with electrical apparatus.

• Price in first year of sale
• 180.00 Hfl

• Source of data
• Technisch- Commercieel - Radio Vademecum Staleman

• Author
• Model page created by John Koster. 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