HF/VHF SWR Analyzer MFJ-249

MFJ Enterprises; Starkville (MS)

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  • Year
  • 1995 ??
  • Category
  • Amateur Equipment (Other, but not Key)
  • Radiomuseum.org ID
  • 237299

 Technical Specifications

  • Number of Transistors
  • 5
  • Semiconductors
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Batteries / addl. power jack / 12 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: HF/VHF SWR Analyzer MFJ-249 - MFJ Enterprises; Starkville MS
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 102 x 60 x 173 mm / 4 x 2.4 x 6.8 inch
  • Notes

  • MFJ-249 HF/VHF SWR Analyzer

    The MFJ-249 combines four basic circuits: a wide range oscillator, a frequency counter, a 50 Ω RF bridge and a calibrated bridge unbalance indicator. This combination of circuits allows measurement of the SWR (referenced to 50  Ω) of any load connected to the ANTENNA connector. The FREQUENCY switch selects the following frequency ranges:
    1.8 - 4 MHz, 4 - 10 MHz, 10 - 26.2 MHz, 26.2 - 62.5 MHz, 62.5 - 113 MHz, 113 - 170 MHz.

    The MFJ-249 can be used to adjust or measure the following:
    Antennas: SWR, resonant frequency, bandwitdth, efficiency
    Antenna tuners: SWR, frequency
    Amplifiers: Input and output networks
    Coaxial transmission lines: SWR, velocity factor, losses, resonance
    Balanced transmission lines: Impedance, velocity factor, resonence
    Matching or tuning stubs: SWR, resonant frequency, bandwidth
    Traps: Resonant frequency
    Tuned circuits: Resonant frequency
    Small capacitor: Value
    RF chokes and inductors: Self resonance, series resonance, value
    Transmitters and oscillators: Frequency

  • Net weight (2.2 lb = 1 kg)
  • 0.7 kg / 1 lb 8.7 oz (1.542 lb)
  • Literature/Schematics (1)
  • -- Original-techn. papers.
  • Author
  • Model page created by Bernd P. Kieck. See "Data change" for further contributors.

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The model HF/VHF SWR Analyzer is part of the collections of the following members.

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