AM/FM Stereo Tuner RT-850A

Rotel, The, Co., Ltd.; Tokyo

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  • Year
  • 1990
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 212887

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • PLL, Phase-locked loop
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • 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: AM/FM Stereo Tuner RT-850A - Rotel, The, Co., Ltd.; Tokyo
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 444 x 66 x 329 mm / 17.5 x 2.6 x 13 inch
  • Notes

  • An AM/FM stereo synthesizer tuner covering MW and FM housed in a black metal case with a digital frequency display. With 8 station push buttons each of which can retrieve one stored FM and one stored MW radio station, Memory button, push buttons for Tuning up and Tuning Down, FM Auto-Tuning, FM Mute Off/Mono, AM bandwidth (Narrow/Wide), Bands (AM, FM), 5 signal strength LED indicators, indicators for Memory and Stereo, adjustable clip-on loop aerial on the back, connections for AM and FM antennae and RCA phono Line Output sockets.

    Specification  
    FM Tuner Section  
    Usable Sensitivity (mono) 5dBf / 0.95µV (75Ω)
    50dB Quieting Sensitivity Mono   8.8dBf / 1.5µV (75Ω)
    Stereo  31.2dBf / 20µV (75Ω)
    Signal-to-Noise Ratio  (at 65dBf) Mono    80dB
    Stereo  75dB
    Harmonic Distortion (at 65dBf) 1 kHz 0.07% (mono), 0.25% (stereo)
    Frequency Response 30-15,000Hz ,+1dB, -1dB
    Capture Ratio 1.0dB
    Alternate Channel Selectivity (±400kHz) 63dB
    Spurious Response Rejection 95dB
    Image Response Ratio 70dB
    IF Response Ratio 95dB
    AM Suppression Ratio 58dB
    Stereo Separation 100Hz/1kHz/10kHz,
    43dB/46dB/38dB)
    Antenna 75Ω unbalanced
    AM Tuner Section  
    Sensitivity 350µV/m
    Selectivity Wide/Narrow 27dB / 42dB
    Signal-to-Noise Ratio 60dB
    Image Response Ratio 40dB
    IF Response Ratio 40dB
    Antenna Loop antenna

    Versions/Power Requirements
    120V AC 60Hz
    220V AC 50Hz
    240V AC 50Hz
    120, 220, 240V AC 50/60Hz (depending on destinations)

    Power Consumption        10 watts

    Similar to the RT-850AL model which additionally has Long Wave.

  • Net weight (2.2 lb = 1 kg)
  • 3.9 kg / 8 lb 9.4 oz (8.59 lb)
  • Price in first year of sale
  • 300.00 $
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Owner's manual RT-850A RT-850AL)
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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