Stereo Tuner TX-6700

Pioneer Corporation; Tokyo

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  • Year
  • 1979 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 325982

 Technical Specifications

  • Number of Transistors
  • 9
  • 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) / 120 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Stereo Tuner TX-6700 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 450 x 148 x 264 mm / 17.7 x 5.8 x 10.4 inch
  • Notes

  • A hi-fi AM/FM stereo tuner with an analogue dial housed in a wooden case. With a rotary tuning control, Signal and Tuning meters, FM stereo indicator, Function switch (FM Auto, FM Mono, AM). On the back, adjustable AM ferrite bar antenna, terminals for FM and AM antennae,  RCA phono line output sockets and an FM De-emphasis switch (75µs, 25µs for FM Dolby).

    Specification  
    FM Tuner Section  
    Circuitry FET 1-stage RF amplifier, 3-gang variable
    capacitor, double-balanced NFB type PLL MPX
    built-in automatic pilot signal canceller
    Usable Sensitivity Mono: 10.7dBf (1.9µV)
    50dB Quieting Sensitivity Mono:  16.1dBf (3.5µV)
    Stereo:  38dBf (44µV)
    S/N Ratio (at 65dBf) Mono: 79dB, Stereo: 74dB
    Distortion (at 65dBf) 1kHz Mono/Stereo: 0.15%/0.25%
    Stereo Separation 1kHz 40dB
    Frequency Response 20Hz-15kHz +0.2dB,-1.0dB
    Capture Ratio 1.0dB
    Alt. Channel Selectivity 60dB
    Spurious Response Ratio 70dB
    Image Response Ratio 60dB
    IF Response Ratio 75dB
    AM Suppression Ratio 50dB
    Muting Threshold 17.2dBf (4µV)
    Antenna Input 300Ω balanced, 75Ω unbalanced
    AM Tuner Section  
    Circuitry 1-stage RF amplifier
    2-gang variable capacitor.
    Sensitivity  
      (IHF, ferrite antenna)
      (IHF, ext. antenna)    		 300µV/m
    15µV
    Selectivity 30dB
    S/N Ratio 50dB
    Image Response Ratio 40dB
    IF Response Ratio 45dB
    Antenna Ferrite loopstick antenna
    Audio Section  
    Output (Level/Impedance) FM (100% MOD) 650mV/4.3kΩ
    AM (30% MOD) 200mV/4.3kΩ

    Semiconductors
    ICs 3, FET 1, Transistors 8, Diodes 9

    Versions/Power requirements
    KU model  /  120V AC 60Hz
    KC model  /  120V AC 60Hz

    Power consumption:  7 watts

  • Net weight (2.2 lb = 1 kg)
  • 4.8 kg / 10 lb 9.2 oz (10.573 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Operating Instructions manual Pioneer TX-6700)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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