• Country
• Netherlands

• Manufacturer / Brand
• NSF Nederlandsche Seintoestellen Fabriek, Hilversum

• Year
• 1947/1948

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 95029

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH21 ECH21 EBL21 AZ1 EM4

• Main principle
• Superheterodyne (common); ZF/IF 452 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• 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: H218X - NSF Nederlandsche

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

• Dimensions (WHD)
• 570 x 370 x 230 mm / 22.4 x 14.6 x 9.1 inch

• Notes
• 5 Band reception:
  • LW: 708 - 1950 m.
  • BC: 198 - 560 m.
  • SW1: 16,7 - 20,7 m.
  • SW2: 20,7 - 33,3 m.
  • SW3: 33,3 - 51,8 m.
  Tuning scale light bulbs type: 2 x 8045D (6.3V, 320mA).
  Loudspeaker Philips type 9702-05 with a soundwave disperser cone. Connectors for second loudspeaker and for pick-up. 
  This model can also work on DC mains by inserting a type 7882C vibrating convertor.
   
   

• Price in first year of sale
• 440.00 Hfl

• Source of data
• Technisch- Commercieel - Radio Vademecum Staleman

• Literature/Schematics (1)
• -- Original-techn. papers. (Generic model 218X by Philips dated 1947)

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

• Other Models

• Here you find 160 models, 118 with images and 85 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from NSF Nederlandsche Seintoestellen Fabriek, Hilversum