B14, SB14, B14AU

• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98718

• Picture
• Schematics

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

• Number of Tubes
• 4

• Valves / Tubes
• FC13 or CK1 SP13 or CF7 Pen26 or CL2 UR1 or CY1 B13 or C1

• Main principle
• Superhet, IF regeneration; ZF/IF 475 kHz; 2 AF stage(s)

• Tuned circuits
• 4 AM circuit(s)

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

• Power type and voltage
• AC/DC-set / 110-240 / AC: 125 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: B14, SB14, B14AU - Siera; Belgien

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

• Dimensions (WHD)
• 350 x 430 x 235 mm / 13.8 x 16.9 x 9.3 inch

• Notes
• 2 Band reception:
  • LW: 800 - 2000 m.
  • BC: 200 - 585 m.
  Tuning scale light bulb type: 8070 (10V, 200mA).
  Loudspeaker Philips type 4281. Connectors for second loudspeaker and for pick-up.
   
  Model (S)B14AU has a built-in autotransformer so that it can perform on 125V AC as good as on 220V AC or DC, a performance which is not possible working on 125V AC without that step-up tranformer. It is however still possible to function as a AC/DC device by bridging point 3 to 4 on the transformers board.
   

  Same chassis as Philips 529AU.
   
  Attention: Chassis connected to the mains !

• Net weight (2.2 lb = 1 kg)
• 12.9 kg / 28 lb 6.6 oz (28.414 lb)

• Price in first year of sale
• 1,395.00 BFr

• Mentioned in
• - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Author
• Model page created by John Koster. 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