AM FM MPX Tuner TU-70

Sansui Electric Co., Ltd.; Tokyo

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  • Year
  • 1964 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 115214

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

 Technical Specifications

  • Number of Tubes
  • 14
  • Number of Transistors
  • 3
  • Main principle
  • Superhet with RF-stage; ZF/IF 455/10700 kHz
  • Tuned circuits
  • 6 AM circuit(s)     13 FM circuit(s)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 100; 117; 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: AM FM MPX Tuner TU-70 - Sansui Electric Co., Ltd.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 405 x 142 x 320 mm / 15.9 x 5.6 x 12.6 inch
  • Notes

  • A hi-fi valve AM/FM stereo tuner with an analogue dial housed in a metal case. With a magic eye tuning indicator, FM stereo indicator, rotary Tuning control, rotary Selector switch (AM, FM, MPX), on/off switches for Noise Filter, Muting and FM AFC. On the rear, an adjustable AM ferrite rod antena, terminals for AM and FM antennae, FM Local/Distant switch and RCA phono Left and Right channel Line Output sockets.

    Specification  
    FM Tuner  
    Frequency range 88-108MHz
    Bandwidth 230kHz (-3dB)
    Sensitivity 1.8µV at 30dB quieting IHFM
    1.2µV at 20dB quieting 100% mod. (300Ω)
    1.1µV at 30dB quieting 100% mod. (75Ω)
    Image ratio min. 42dB
    Frequency response 30Hz-15kHz ±2dB
    Distortion max. 1% at 100% mod.
    AM Tuner  
    Frequency range 535-1605kHz
    Bandwidth 7kHz (-3dB)
    Sensitivity 6µV at 20dB S/N ratio 30% mod.
    Image ratio min. 60dB
    FM Multiplex  
    Frequency response 30Hz-15kHz ±2dB
    Channel separation 37dB at 1kHz
    Distortion max. 1% at 1kHz
    Output Level min. 1.2V at FM stereo and mono
    input of 10µV or over, 30% mod.

    Power requirements: 100, 117, 220, 240V 50/60Hz

    Power consumption: 60VA

    Some examples do not have the transistors which actuate the FM stereo indicator.

    Partner to the Sansui AU-70 Stereophonic Amplifier

    Stereo-Tuner, passend zum Verstärker AU-70.

  • Net weight (2.2 lb = 1 kg)
  • 7.5 kg / 16 lb 8.3 oz (16.52 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Operating Instructions and Service Manual TU-70)

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