Bi-Ampli BX998A /16

Philips; Eindhoven (tubes international!); Miniwatt

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  • Year
  • 1955 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 184736

 Technical Specifications

  • Number of Tubes
  • 16
  • Number of Transistors
  • Main principle
  • Superhet with RF-stage; 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.

  • Literature/Schematics (4)
  • -- Schematic
  • Author
  • Model page created by Ottmar Lauth. See "Data change" for further contributors.

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