BX680A /46

• Country
• Netherlands

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

• Year
• 1948/1949

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 25349

• Picture
• Schematics

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

• Number of Tubes
• 6

• Valves / Tubes
• ECH21 EF22 EF22 EBL21 EM4 AZ1

• 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; 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 19 cm = 7.5 inch

• Power out
• 4 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: BX680A /46 - Philips; Eindhoven tubes

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

• Dimensions (WHD)
• 570 x 400 x 245 mm / 22.4 x 15.7 x 9.6 inch

• Notes
• AM radio for external antenna:
  • LW: 150 - 420 kHz.
  • BC: 420 - 1620 kHz.
  • SW1: 8,1 - 5,9 MHz (37m - 50m with bandspread 49-50m).
  • SW2: 9,67 - 7,06 MHz (31m - 42,5m with bandspread 40-42m).
  • SW3: 12,5 - 9,43 MHz (24m - 31,8m with bandspread 30-31m).
  • SW4: 15,8 - 11,6 MHz (19m - 25,8m with bandspread 25m).
  • SW5: 19,3 - 15 MHz (15,5m - 20m with bandspread 19-20m).
  • SW6: 23,08 - 17,65 MHz (13m - 17m with bandspread 15-16m).

  By connecting a capacitor in series with the tuning capacitor, the total capacity change per unit of rotation is no longer linear but has the effect of stretching the chosen shortwave band when the tuning capacitor is turned in (at lowest frequency or highest meters).

  Loudspeaker: 9702-05 (7Ω, with soundwave diffuser).

  Dial lamp: 2x 8045D (E10, 6.3V/320mA).

  Version /46 is basically the same as version /00 but for the grammophone switch which is incorporated in the volume control instead of an automatic switch in the grammophone connector.  See technical documents uploaded with this model.

• Net weight (2.2 lb = 1 kg)
• 11.5 kg / 25 lb 5.3 oz (25.33 lb)

• Price in first year of sale
• 395.00 Hfl

• External source of data
• Ernst Erb

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

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

• Other Models

• Here you find 5244 models, 4386 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