• Country
• Netherlands

• Manufacturer / Brand
• NSF Nederlandsche Seintoestellen Fabriek, Hilversum

• Year
• 1935/1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 200726

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

• Number of Tubes
• 6

• Valves / Tubes
• CK1 CF2 CB2 CF1 CL2 CY1 C1

• Main principle
• Superheterodyne (common); ZF/IF 115 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• AC/DC-set / 110-119; 120-130; 200-224; 225-250 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21 cm = 8.3 inch

• Material
• Wooden case

• from Radiomuseum.org
• Model: H49U - NSF Nederlandsche

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

• Dimensions (WHD)
• 440 x 395 x 250 mm / 17.3 x 15.6 x 9.8 inch

• Notes

• Loudspeaker 4283.

  The current stabilizer type C1 only works for mains voltages above 200 volt. For 110 volt it is short-circuited and for 130 volt there is a series resistance. There is no tube C9 option for low voltages. 

  This radio has the same chassis as model Philips 526U besides some minor differences. The position of the trimmers for alignment can also be found there.

  The two dial lamps are type 18-20 volt 200mA BA15D, Philips type 8064N

   

• Net weight (2.2 lb = 1 kg)
• 11.250 kg / 24 lb 12.5 oz (24.78 lb)

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Gidi Verheijen. 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