• Country
• Japan

• Manufacturer / Brand
• Sansui Electric Co., Ltd.; Tokyo

• 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.

• Number of Tubes
• 14

• Valves / Tubes
• 6CW4 6CW4 6AQ8 6BA6 6R-E13 6BA6 6BE6 6BA6 6AU6 6AU6 6AQ8 6AQ8 6BL8 12AU7

• Number of Transistors
• 3

• Semiconductors
• 2SC402 2SC402 2SB324

• 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)

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 435 models, 421 with images and 133 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sansui Electric Co., Ltd.; Tokyo