Solid State Stereo Tuner TX-900

Pioneer Corporation; Tokyo

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  • Year
  • 1970/1971
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 326003

 Technical Specifications

  • Number of Transistors
  • 28
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 117 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Solid State Stereo Tuner TX-900 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 405 x 140 x 356 mm / 15.9 x 5.5 x 14 inch
  • Notes

  • A hi-fi AM/FM stereo tuner with an analogue dial housed in a metal case with wooden trims. With FM Tuning and Signal meters, FM Stereo indicator, rotary contros for Tuning, AM Output Level, FM Output Level and Muting, rotary Selector switch (FM Auto, FM, AM), push button on/off switches for Muting, MPX Noise Filter and AFC. On the back, an adjustable AM ferrite loopstick antenna, terminals for AM and FM antennae and ground, RCA phono sockets for Line Output and output to Tape recorder, adjuster for FM MPX Separation Control and a switched AC outlet (200W).

    Specification  
    FM TUNER SECTION  
    Circuitry Front end using 3 FETs, 2 stage RF amplifier
    IF stage using 2 crystal filters and 4 ICs
    Frequency Range 87MHz-108MHz
    IHF Usable Sensitivity 1.7µV
    Image Rejection 95dB (at 98MHz)
    Capture Ratio 1.5dB (IHF rating)
    S/N Ratio 60dB (30% MOD), 70dB (I.H.F rating)
    Antenna Input 300Ω (balanced), 75Ω (unbalanced)
    Output Level  1V (400Hz, 30% MOD)
    FM MPX SECTION  
    Circuit Time-switching type de-modulator
    FM Mono/Stereo Automatic selection
    Channel Separation 38dB (at 1kHz), 30dB (40Hz-8kHz)
    AM TUNER SECTION  
    Circuitry Superheterodyne
    Frequency Range 525kHz-1,605kHz
    IHF Sensitivity 10µV
    Image Rejection 70dB (at 1,000kHz)
    Output Level 1V (400Hz, 30% MOD)
    Antenna Input Built-in ferrite loopstick antenna

    Semiconductors
    FETs 3, ICs 4, Transistors 25, Diodes 24

    Version/Power Requirements
    KC model  / 117V AC 60Hz

    Power consumption: 13VA, 12 watts (Max)

  • Net weight (2.2 lb = 1 kg)
  • 7.8 kg / 17 lb 2.9 oz (17.181 lb)
  • Mentioned in
  • -- Original prospect or advert (1970 and 1971 Pioneer Stereo Components catalogues)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Operating and Service manual TX-900)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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