Stereo Tuner TX-520

Pioneer Corporation; Tokyo

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  • Year
  • 1981
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 320465

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

 Technical Specifications

  • Number of Transistors
  • 8
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 120; 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Stereo Tuner TX-520 - Pioneer Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 420 x 94 x 254 mm / 16.5 x 3.7 x 10 inch
  • Notes

  • A hi-fi AM/FM stereo tuner with an analogue dial covering FM and MW. With 5 green LED signal strength indicators, a green FM Tuned led indicator, a red FM Stereo indicator, an led on the pointer, switches for Function (AM/FM), FM Mute (On/Off Mono), an internal ferrite antenna, terminals for AM and FM antennae, a Line Output interconnect cable with RCA phono plugs, and on the US model an RCA phono socket for AM Stereo output.

    Specification  
    FM Tuner Section  
    Usable Sensitivity 10.8dBf (1.9µV)
    50dB Quieting Sensitivity MONO 17.3dBf (4.0µV)
    STEREO 39.2dBf (50µV)
    Signal-to-Noise Ratio (at 65dBf) MONO 75dB
    STEREO 70dB
    Distortion (at 65dBf) MONO 1kHz; 0.1%
    STEREO 1kHz; 0.2%
    Capture Ratio 1dB
    Alternate Channel Selectivity (400kHz) 60dB
    Stereo Separation 1kHz 40dB
    Frequency Response 30Hz-15kHz +0.5dB,-1dB
    Spurious Response Ratio 75dB
    Image Response Ratio 55dB
    IF Response Ratio  80dB
    AM Suppression Ratio 55dB
    Muting Threshold 19.2dBf (5µV)
    Antenna Input 300Ω balanced, 75Ω unbalanced
    AM Tuner Section  
    Sensitivity IHF ferrite antenna  300µV/m
    IHF external antenna 30µV
    Selectivity 25dB
    Signal to Noise Ratio  50dB
    Image Response Ratio 40dB
    IF Response Ratio 70dB
    Antenna Ferrite loopstick antenna
    Audio Section  
    Output (Level/Impedance)  
     FM (100% MOD)
     AM (30% MOD)    		 650mV/3.6kΩ
    150mV

    Semiconductors:  8 transistors, 4 ICs, 2 diodes, 1 zener diode, 2 rectifier diodes

    Versions/power requirements

    KU USA. 120V AC 60Hz
    YP Australia 240V AC 50/60Hz
    S/G US Military 110; 120; 220; 240V AC 50/60Hz with voltage selector
    S General export 110; 120; 220; 240V AC 50/60Hz with voltage selector
    SS South Africa 110; 120; 220; 240V AC 50/60Hz with voltage selector

    Power Consumption: 13W  (US model 11W)

    The similar model Pioneer TX-520L Stereo Tuner also has LW.

  • Net weight (2.2 lb = 1 kg)
  • 3.2 kg / 7 lb 0.8 oz (7.048 lb)
  • Mentioned in
  • -- Original prospect or advert (1981-82 Pioneer Hi-Fi Stereo catalogue)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual TX-520 dated Mar 1981)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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