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HF/VHF Analyzer


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The MFJ-249B HF/VHF 1.8-170 MHz SWR analyzer is a versatile device. It combines four basic circuits: a wide range oscillators, a frequency counter, a 50 ohm RF bridge and a micro controller. This combination of circuits allows measurement of SWR, magnitude of impedance, components of the impedance (resistance and reactance) of any load connected to the Antenna input connector on the top panel. By connecting a signal to the BNC jack labeled Frequency Counter Input it is possible to determine its frequency. It is designed to measure many things:

Antennas: SWR, impedance, resistance, resonant frequency and bandwidth efficiency.
Antenna tuners: SWR and frequency.
Amplifiers: input and output networks.
Coaxial transmission lines: SWR, velocity factor, losses and resonance.
Matching or Tuning Stubs: SWR, resonance frequency, bandwidth.
Traps: resonant frequency.
Small capacitors: value.
RF chokes and inductors: self resonance, series resonance, value.
Transmitters and oscillators: frequency.

This device requires 12 VDC (see optional MFJ-1312D) or ten AA cells (not supplied).

Order # Item Description List Price Your Price Order
  MFJ-29C Black carry case with accessory pocket and strap. INFO Discontinued
  MFJ-66 Dip Meter adapter (set of two coils covering 1.8-170 MHz). Discontinued
  MFJ-66C Dip coil set (set of three coils covering 1.8-230 MHz). INFO Discontinued
  MFJ-99 Accessory kit: MFJ-29C case, MFJ-66 Dip Coils and MFJ-1312D power supply. Discontinued
  MFJ-1315 AC power supply (12 VDC 500 mA). Replaced by MFJ-1312D. Discontinued
   MFJ-1312D AC power supply (12 VDC 500 mA). Discontinued

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