• Country
• Belgium

• Manufacturer / Brand
• Siera; Belgien

• Year
• 1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 98616

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

• Number of Tubes
• 5

• Valves / Tubes
• EK2 EF5 EBC3 EL3 EZ3

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

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

• Details
• Visual Tuning Indicator pre Eye

• Power type and voltage
• Alternating Current supply (AC) / 110; 125; 145; 200; 220; 245 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21.5 cm = 8.5 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: S7A - Siera; Belgien

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

• Dimensions (WHD)
• 390 x 460 x 275 mm / 15.4 x 18.1 x 10.8 inch

• Notes
• 3 Band reception:
  • LW: 725 - 1975 m.
  • BC: 198 - 585 m.
  • SW: 16 - 51 m.
  Tuning scale light bulbs type: 2 x 8045 (6,3V, 320mA) and 1 x 8043 (6,3V, 90mA).
  Loudspeaker Philips type 9602. Connectors for second loudspeaker and for pick-up. 
  Variable selectivity, anti-fading and a milliamperemeter as tuning indicator. 
  Cabinet in varnished walnut.

• Net weight (2.2 lb = 1 kg)
• 15 kg / 33 lb 0.6 oz (33.04 lb)

• Price in first year of sale
• 2,800.00 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 456 models, 414 with images and 188 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera; Belgien