Quartz Synthesizer AM-FM Stereo Tuner KT-990D USA

Kenwood, Trio-Kenwood Inc.; Komagane

  • Year
  • 1988/1989
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 327035
    • alternative name: Trio Corp.
    • Brand: Jennen

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • PLL, Phase-locked loop; ZF/IF 450/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Quartz Synthesizer AM-FM Stereo Tuner KT-990D [USA] - Kenwood, Trio-Kenwood Inc.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 440 x 78 x 331 mm / 17.3 x 3.1 x 13 inch
  • Notes
  • A hi-fi quartz synthesizer AM-FM stereo tuner with a digital frequency display housed in a black metal case. New Direct Linear Reception Circuit (DLRC), Direct Linear Loop FM Detector (DLLD), IF Distortion Correcting Circuit (DCC), Direct Pure MPX Decoder (DPD), Pentacle Power Supply system, Active Reception Control with RF and IF selectors, Recording level calibration, 20-station preset, 3-station preprogramming. On the rear, terminals for an AM loop antenna, connector for an FM coaxial antenna and RCA phono Line Output sockets.

    FM Tuner section  
    Frequency range 87.5MHz to 108MHz
    Antenna impedance 75Ω unbalanced, 300Ω balanced
    Usable sensitivity (IHF) 10.8dBf (0.95µV)
    50 dB quieting sensitivity (IHF)  
    16.2dBf (1.8µV)
    38.8dBf (24.0µV)
    S/N ratio (IHF)  
     Mono (75kHz Dev.)
     Stereo (75kHz Dev.)
    92dB (65dBf input), 92dB (85dBf input)
    78dB (65dBf input), 86dB (85dBf input)
    Total harmonic distortion (WIDE)  
     Mono (75kHz Dev.)
     Stereo (75kHz Dev.)
    1kHz: 0.007%, 50Hz-10kHz: 0.02%
    1kHz: 0.009%, 50Hz-10kHz: 0.05%
    Capture ratio WIDE 1.0dB, NARROW 2.5dB
    Alt. channel selectivity (IHF) WIDE 60dB (±400kHz)
    Stereo separation WIDE 1kHz 65dB
    Frequency response 20Hz-15kHz ±0.5dB
    Spurious rejection ratio (98MHz) 105dB
    Image rejection ratio (98MHz) 82dB
    IF rejection ratio (98MHz) 110dB
    AM suppression ratio 76dB
    Subcarrier suppression ratio 70dB
    Output level/impedance at 1kHz, 100% Dev. 600mV/3.3kΩ Fixed
    AM Tuner section  
    Frequency range 530kHz-1610kHz
    Usable sensitivity (Loop) 10µV (250µV/m)
    S/N ratio (30% Mod, 1mV input) 55dB
    Total harmonic distortion 0.25%
    Image rejection ratio (Loop) 40dB
    Selectivity (IHF)  30dB
    Output level/impedance
    (400Hz, 30% Mod.)
    180mV, 3.3kΩ

    Versions/Power requirements
    USA  /  AC 120V AC 60Hz

    Power consumption:  20 watts

    Very similar to the Kenwood KT-990D Quartz Synthesizer AM-FM Stereo Tuner Europe and UK model.

  • Net weight (2.2 lb = 1 kg)
  • 4 kg / 8 lb 13 oz (8.811 lb)
  • Mentioned in
  • -- Original prospect or advert (1988-89 Kenwood Audio Components catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual Kenwood KT-990D dated 1988)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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