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S153A; Siera; Belgien (ID = 1014948) Radio
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S153A; Siera; Belgien (ID = 1014948) Radio
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Country:  Belgium
Manufacturer / Brand:  Siera; Belgien
Year: 1941/1942 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: ECH3 EF9 EBL1 AZ1
Main principle Superheterodyne (common); ZF/IF 128 kHz; 1 AF stage(s)
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast, Long Wave and Short Wave.
Power type and voltage Alternating Current supply (AC) / 125-245 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 17 cm = 6.7 inch
Power out
from Model: S153A - Siera; Belgien
Material Wooden case
Shape Tablemodel, low profile (big size).
3 Band reception:
  • LW: 708 - 2000 m.
  • BC: 175 - 585 m.
  • SW: 13,8 - 51 m.
Tuning scale light bulbs type: 2 x 8045D (6,3V, 320mA).
Loudspeaker Philips type 9648 or 9678. Connectors for second loudspeaker and for pick-up.
This model is comparable with Fenno V-42 S153A and Jura 153A.
1) A generic schematic for type 153A made by Philips for its sub-brands exists. It shows a totally different schematic, number of tubes and chassis setup than the model presented here. Radio-vademecum Staleman defines types 144A and 153A as electronically similar which is in contradiction with the mentioned manual above. Up to this date it was not possible to decide for certain which source is right by lack of a physical model to be examined. There is however a Jura 153A and Fenno S153A (see links above) that would support the theory that S153A and S144A are related.
2) Although the Siera memento 1932-1946 doesn't mention the existence of type S153A, a survey of the types of confiscated radios in the Netherlands in 1943 shows that type S153A was found as well as type 144A.
Price in first year of sale 140.00 Hfl
Source of data Technisch- Commercieel - Radio Vademecum Staleman

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

All listed radios etc. from Siera; Belgien
Here you find 435 models, 394 with images and 178 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.