VHF Calibrator 985

Weston Electrical Instrument Co.; Newark, N.J.; (Jewell Electrical Instrument Co.; Chicago, IL)

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  • Year
  • 1954 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 360907
    • alternative name: Jewell

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 6
  • Wave bands
  • VHF incl. FM and/or UHF (see notes for details)
  • Power type and voltage
  • Alternating Current supply (AC) / 50 - 60 Hz, 105-125 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: VHF Calibrator 985 - Weston Electrical Instrument
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 330 x 250 x 170 mm / 13 x 9.8 x 6.7 inch
  • Notes

  • This device is used for checking and calibrating VHF devices operating in frequencies from 4 to 265 MHz.
    Characteristics:

    • Variable Frequency Oscillator Bandwidth:
      4 ÷ 110 MHz in 7 bands all fundamental.
      160 ÷ 265 MHz in 3 bands all fundamental.
    • Tuning Control Gear Ratio: 4.5 turns across the entire scale.
    • Damping Range: 1% to 100%
    • Crystal Oscillators:
      1.5 MHz 0.01% accuracy
      4.5 MHz 0.01% accuracy.
    • Internal Modulation Frequencies:
      4.5 MHz; 300 kHz; 400 Hz.
    • Z-Axis Amplifier Output Voltage: 200 VMax peak to peak.
    • Beat Heterodyne Tuning Indicator Sensitivity: 500 µV.

     

  • Net weight (2.2 lb = 1 kg)
  • 10 kg / 22 lb 0.4 oz (22.026 lb)
  • Price in first year of sale
  • 199.50 USD
  • Mentioned in
  • -- Original prospect or advert ("L'Antenna" Italy, Il Rostro editor, number 9 September 1956.)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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