• Country
• Netherlands

• Manufacturer / Brand
• Philips; Eindhoven (tubes international!); Miniwatt

• Year
• 1940

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 89118

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH3 EF6 EL3 EZ2 EFM1 150A1

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: NF-Schwebungsoszillator - Toongenerator GM2307 [ECH3 ] - Philips; Eindhoven tubes

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 340 x 255 x 200 mm / 13.4 x 10 x 7.9 inch

• Notes
• Audio Frequency Oscillator, range 30 - 16000 Hz. Signal originated by beat of two HF signals produced by two seperate valve oscillators.

• Net weight (2.2 lb = 1 kg)
• 12 kg / 26 lb 6.9 oz (26.432 lb)

• Price in first year of sale
• 750.00 RM

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by a member from D. See "Data change" for further contributors.

• Other Models

• Here you find 5233 models, 4365 with images and 3445 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Philips; Eindhoven (tubes international!); Miniwatt