FM-AM Program Tuner ST-242 US Model

Sony Corporation; Tokyo

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  • Year
  • 1980 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 184025

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 450/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 120 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: FM-AM Program Tuner ST-242 [US Model] - Sony Corporation; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 430 x 110 x 315 mm / 16.9 x 4.3 x 12.4 inch
  • Notes

  • An AM/FM stereo tuner with an analogue dial. Wih manual tuning and five FM radio station presets. With a 5 LED signal strength indicator, indicators for FM Tuned and FM Stereo, rotary band selector switch (FM. AM), push button switches for FM Program, Mode/Muting and Manual Tuning, 5 FM Programmed Tuning push button switches, on the back a built-on adjustable ferrite bar AM antenna, terminals for AM and FM antennae and a Line Output interconnect cable with RCA phono plugs.

    Specification  
    FM Tuner Section  
    Tuning range 87.5 - 108 MHz
    Intermediate Frequency 10.7 MHz
    Sensitivity at 50dB Quieting 16.1dBf, 3.5µV (12dB) (MONO)
    38.3dBf, 45µV (33dB) (STEREO)
    Usable Sensitivity 10.3dBf, IHF 1.8µV (5dB)
    Signal-to-Noise Ratio 75dB (MONO), 70dB (STEREO)
    Harmonic Distortion at 1kHz 0.2% (mono), 0.3% (stereo)
    IM Distortion 0.2% (mono), 0.3% (stereo)
    Separation 45dB at 1kHz
    Frequency Response 30Hz - 15kHz +0.5dB,-2dB
    Alternate Channel Selectivity 60dB at 400kHz
    Capture Ratio 1.5dB
    AM Suppression Ratio 54dB
    Image Response Ratio 45dB
    Spurious Response Ratio 70dB
    Muting Threshold 5µV approx.
    Output Level 450mV, 8.2kΩ (75kHz deviation)
    Antenna Terminals 300Ω balanced, 75Ω unbalanced
    AM Tuner Section  
    Tuning range 530kHz - 1610kHz
    Intermediate frequency 450kHz
    Antenna Built-in ferrite-rod antenna,
    External antenna terminal

    Versions/Power Requirements
    US / 120 V AC 60Hz

    Power Consumption: 15 W

    Similar to the Sony ST-242 FM-AM Program Tuner (other markets).

  • Net weight (2.2 lb = 1 kg)
  • 4.3 kg / 9 lb 7.5 oz (9.471 lb)
  • Source of data
  • - - Manufacturers Literature
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Service manual ST-242 US model dated 1980)
  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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