• Country
• Netherlands

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

• Year
• 1955 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 184736

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

• Number of Tubes
• 16

• Valves / Tubes
• EBF80 ECH81 EF80 EC92 EM34 EF89 EBF80 EF85 EAA91 ECC83 EBC41 PL81 PL81 EL84 EZ80 EZ80

• Number of Transistors

• Semiconductors
• OA50 OA72

• Main principle
• Superhet with RF-stage; ZF/IF 470/10700 kHz; 3 AF stage(s); Export model

• Tuned circuits
• 9 AM circuit(s)     11 FM circuit(s)

• Wave bands
• Broadcast, Long Wave, more than 2 x SW plus FM or UHF.

• Power type and voltage
• Alternating Current supply (AC) / 90; 110; 125; 145; 180; 200; 220; 245 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: Bi-Ampli BX998A /16 - Philips; Eindhoven tubes

• Shape
• Tablemodel with Push Buttons.

• Dimensions (WHD)
• 710 x 440 x 320 mm / 28 x 17.3 x 12.6 inch

• Notes

• Dies ist ein Export - Modell für die Schweiz - siehe Skala.

  Getrennte Verstärkung der hohen und tiefen Töne. (" Bi - Ampli").

  Variable Bandbreite. 3 KW - Bereiche ( 60 - 180 m, 20 - 60 m, 11 -21 m ), davon die beiden letzteren mit " KW - Banddehnung ".

  "Ortsender" - Taste für einen programmierbaren Sender, mit eigener Skala.

  ---

  Export model for Switzerland. The tuning scale has a Swiss Cross with every Swiss station. See photo.

  Bandswitches for all AM bands and FM with motor control and illuminated push-button selectors.

  AM radio with 2 built-in ferroceptors in Faraday cage. The 2 ferroceptors are connected in series for LW and in parallel for BC.

  • LW: 150 - 345 kHz.
  • BC: 517 - 1620 kHz.
  • BC "Local": 517 - 1615 kHz (with its own tuning capacitor and scale).
  • SW1: 1,6 - 5,2 MHz (185m - 57,5m).
  • SW2: 5,1 - 15 MHz (59m - 20m) with fine tuning (S43) on separate scale.
  • SW3: 14,7 - 26,5 MHz (20,4m - 11,3m) with fine tuning (S43) on separate scale.

  AM I.F. filters with variable bandwidth, mechanically coupled to the treble tone control.

  FM radio with dipole antenna input: 87.5 - 100 MHz with or without silent tuning.
   
  Separated tone control for bass and treble.

  Amplifier: "Bi-Ampli" separated output stages for bass and treble. 

  The bass amplifier is of SRPP* type which act as a push-pull amplifier (2x PL81).

  The treble amplifier is of common single ended design (EL84).

   

  Loudspeakers:

  • 9758A (24 cm, 700Ω) for bass.
  • 9768M (15 cm, 5Ω, co-axial) for treble.

  Dial lamps:

  • 7x 8089N (bajonet, 12V/100mA).
  • 5x 7994N (bajonet, 7,2V/100mA).
  • 3x 8024N (bajonet, 6,3V/300mA).

  *Shunt Regulated Push Pull.

• Mentioned in
• - - Manufacturers Literature

• Literature/Schematics (4)
• -- Schematic

• Author
• Model page created by Ottmar Lauth. See "Data change" for further contributors.

• 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