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S18U; Siera; Belgien (ID = 651787) Radio
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S18U; Siera; Belgien (ID = 651787) Radio
Siera; Belgien: S18U [Radio] ID = 651787 412x406
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For model S18U, Siera; Belgien:
Advertisement from 1937 Lithuanian newspaper
Country:  Belgium
Manufacturer / Brand:  Siera; Belgien
Year: 1937 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: EK2 EF5 EB4 EBC3 EM1 EL3 EL3 AZ1
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.
Power type and voltage AC/DC-set / 110-240 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 26 cm = 10.2 inch
Power out
from Model: S18U - Siera; Belgien
Material Wooden case
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 620 x 375 x 245 mm / 24.4 x 14.8 x 9.6 inch
3 Band reception:
  • LW: 720 - 2000 m.
  • BC: 198 - 585 m.
  • SW: 16,7 - 51 m.
Tuning scale light bulbs type: 4 x 8045 (6,3V, 320mA).
Loudspeaker Philips type 9604. Connectors for second loudspeaker and for pick-up. 
This radio is the same as model S18A but with a vibrator convertor to allow to work on DC.
This model is the electronic equivalent of Jura 18U.
Net weight (2.2 lb = 1 kg) 19.5 kg / 42 lb 15.2 oz (42.952 lb)
Price in first year of sale 3'900.00 BEF
Mentioned in - - Manufacturers Literature (Siera memento of tubes and models 1932-1946)
Literature/Schematics (1) -- Original-techn. papers. (from model S18A)

Model page created by John Koster. See "Data change" for further contributors.

All listed radios etc. from Siera; Belgien
Here you find 434 models, 393 with images and 178 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.