Audio Current Transfer FM Stereo/FM-AM Tuner ST-S444ES US, Canada and E models

Sony Corporation; Tokyo

Data
Forum
Pictures
Collections

  • Year
  • 1984/1985
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 324265

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • PLL, Phase-locked loop; ZF/IF 450/10700 kHz
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220; 240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Audio Current Transfer FM Stereo/FM-AM Tuner ST-S444ES [US, Canada and E models] - Sony Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 80 x 340 mm / 16.9 x 3.1 x 13.4 inch
  • Notes

  • A hi-fi AM/FM stereo quartz lock digital synthesizer tuner with a digital frequency display. Features Direct Comparator Technology and an Audio Current Transfer (ACT) circuit. With Automatic tuning, Manual tuning, Memory for 8 AM or FM radio stations, SCAN/READ function, a Program Function with optional timer, Hi-Blend switch, a 10 step Signal Strength indicator and a Calibration Tone button which produces a 400Hz, 50% mod. signal for calibrating the recording level on a tape deck. AM and FM antennae terminals and an ACT output connector (a special ACT cable is supplied for connecting the tuner to an amplifier).

    Specification  
    System PLL quartz-locked digital synthesizer system
    FM stereo, FM/AM super-heterodyne tuner
    FM tuner section  
    Tuning range 87.5MHz - 108MHz
    Antenna terminals 75Ω unbalanced
    Sensitivity at 50dB quieting 16.8dBf, 1.8µV (mono) ; 37.9dBf, 22.5µV (stereo)
    Usable sensitivity 10.3dBf, 0.9µV (IHF)
    Signal/Noise ratio 91dB (mono), 88dB (stereo)
    Frequency response 30Hz - 15kHz +0.2dB,-0.5dB
    Selectivity at 400kHz 60dB (WIDE), 90dB (NARROW)
    Harmonic distortion at 1kHz Mono:   0.03% (WIDE), 0.05% (NARROW)
    Stereo: 0.04% (WIDE), 0.06% (NARROW)
    IM distortion Mono:   0.03% (WIDE), 0.05% (NARROW)
    Stereo: 0.04% (WIDE), 0.06% (NARROW)
    Separation at 1kHz 60dB
    Capture ratio 1.0dB
    AM suppression ratio 65dB
    Image response ratio 120dB
    IF response ratio 120dB
    Spurious response ratio 120dB
    Muting threshold Approx. 29dBf, 8µV
    Auto tuning threshold Approx. 29dBf, 8µV
    Output level/impedance
    at 75kHz deviation
    750mV/620Ω
    Calibration tone 400Hz, 50% mod
    AM tuner section  
    Tuning range 531 - 1,602kHz (9kHz steps)
    530 - 1,610kHz (10kHz steps)
    Antenna Layout-Free AM antenna
    External antenna terminal
    Usable sensitivity
    at 999 or 1,000kHz    		 Layout-Free AM antenna 300µV/m
    External antenna 30µV
    Signal/Noise-ratio 54dB
    Harmonic distortion 0.3%
    Selectivity 35dB (9kHz), 38dB (10kHz)
    Image response ratio 42dB (at 999 or 1,000kHz)
    Auto-tuning threshold Approx. 1mV/m

    Versions/Power requirements
    US, Canadian model  / 120V AC 60Hz
    E model  / 120, 220 or 240V AC 50/60Hz with voltage selector

    Power consumption 18 watts

    See also the similar Sony ST-S444ES Audio Current Transfer FM Stereo/FM-AM Tuner AEP and UK model.

  • Net weight (2.2 lb = 1 kg)
  • 4.4 kg / 9 lb 11.1 oz (9.692 lb)
  • Mentioned in
  • -- Original prospect or advert (1984 Sony Audio catalogue)
  • Literature/Schematics (1)
  • -- Original prospect or advert (1985 Sony HiFi-Systemkomponenten katalog)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Service manual ST-S444ES dated 1984)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum