AM/FM Stereo Tuner RT-400

Rotel, The, Co., Ltd.; Tokyo

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  • Year
  • 1981
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 288599

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Powered by external power supply or a main unit. / DC 16 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: AM/FM Stereo Tuner RT-400 - Rotel, The, Co., Ltd.; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 66 x 324 mm / 16.9 x 2.6 x 12.8 inch
  • Notes

  • An AM/FM stereo hi-fi tuner sold with the Rotel RA-400 amplifier which exclusively supplies the power to this tuner. With an analogue dial, a rotary Function switch (AM/FM), Signal Strength LED indicators, Stereo indicator, adjustable AM bar antenna on the back, connections for AM and FM antennae, Line Output interconnect cable with phono plugs, power cable to connect to the DC power outlet on the back of the RA-400 amplifier.

    Specification  
    FM Tuner Section  
    Usable Sensitivity (Mono) 10.8dBf (1.9µV/300Ω)
    50dB Quieting Sensitivity Mono   : 17.8dBf (4.3µV/300Ω)
    Stereo : 41dBf (63µV/300Ω)
    Signal-to-Noise Ratio (at 65dBf) Mono  :  72dB
    Stereo :  65dB
    Distortion (at 65dBf)  
     100Hz and 1kHz
     6kHz    		 0.15% (mono), 0.3% (stereo)
    0.25% (mono), 0.4% (stereo)
    Frequency Response 30 - 14,000Hz +0.3dB,-3dB
    Capture Ratio 1.5dB
    Alternate Channel Selectivity 52dB
    Spurious Response Ratio 75dB
    Image Response Ratio 50dB
    IF Response Ratio 75dB
    AM Suppression Ratio 56dB
    Stereo Separation 40dB (1kHz), 30dB  (30-15,000Hz)
    Antenna Input 300Ω balanced, 75Ω unbalanced
    AM Tuner Section  
    Sensitivity 250µV/m (IHF, ferrite antenna)
    13µV (IHF, ext. antenna)
    Selectivity 30dB
    Signal-to-Noise Ratio 45dB
    Image Response Ratio 40dB
    IF Response Ratio 38dB
    Antenna Built-in ferrite loopstick antenna

    Power requirements
    16 volts DC 170 mA supplied from the RA-400 amplifier

    Similar to the Rotel RT-400L MW/LWFM Stereo Tuner which additionally has LW.

  • Net weight (2.2 lb = 1 kg)
  • 2.8 kg / 6 lb 2.7 oz (6.167 lb)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Owner's manual RT-400 RT-400L)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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