• Country
• Netherlands

• Manufacturer / Brand
• Siera; Eindhoven (NL)

• Year
• 1940/1941

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 97165

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

• Number of Tubes
• 4

• Valves / Tubes
• UCH4 UF9 UBL1 UY1

• Main principle
• Superheterodyne (common); ZF/IF 473 kHz; 1 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

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

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

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 15 cm = 5.9 inch

• Material
• Bakelite case

• from Radiomuseum.org
• Model: S141A [Bakelite] - Siera; Eindhoven NL

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

• Dimensions (WHD)
• 395 x 246 x 153 mm / 15.6 x 9.7 x 6 inch

• Notes
• 3 Band reception:
  • LW: 708 - 2000 m.
  • BC: 186 - 585 m.
  • SW: 16,7 - 51 m.
  Tuning scale light bulb type: 8095D (19V, 90mA).
  Loudspeaker Philips type 9676. No connectors for external loudspeaker or pick-up. 
  This model is comparable with NSF H140A, NSF H142A, NSF H160A, Mediator M142A, Mediator M160A and Mediator M160B.

  The wiring makes use of the internal connections of the rectifier tube UY1.

  Chassis like S145A but S141A has no tone control. Also exists with wooden cabinet (probably for the Dutch market only).

  Attention: the unit contains an auto-transformer - mains connected to the chassis !

• Net weight (2.2 lb = 1 kg)
• 4.5 kg / 9 lb 14.6 oz (9.912 lb)

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

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

• Other Models

• Here you find 50 models, 46 with images and 19 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera; Eindhoven (NL)