The MFJ-259D is the world's most popular Antenna Analyzer, now with an expanded frequency range of 100 kHz-230 MHz and 2200 Meter band. It is incredibly easy to use, just like your transceiver. The analyzer instantly displays SWR, complex antenna impedance, and frequency all at once, giving you a complete picture of your antenna. You can read SWR, return loss, and reflection coefficient at any frequency simultaneously. The analyzer also provides measurements of complex impedance as series resistance and reactance (R+jX) or as magnitude (Z) and phase (degrees). Additionally, it can determine velocity factor, coax cable loss in dB, length of coax, and distance to short or open in feet. It can measure inductance in uH and capacitance in pF at actual operating frequencies.
This all-in-one ham radio test set includes a frequency counter, RF generator, SWR analyzer, RF resistance, reactance analyzer, coax analyzer, capacitance/inductance meter, and more. The large easy-to-read two-line LCD screen and side-by-side meters clearly display all the information you need. With this analyzer, you can find your antenna's true resonant frequency, trim dipoles and verticals for the lowest SWR at your favorite frequency, adjust your Yagi, quad, loop, and other antennas, and change antenna spacing and height. You can watch SWR, resistance, and reactance change instantly on the displays, which will guide you on what actions to take.
This analyzer allows you to perfectly tune critical HF mobile antennas in seconds for super DX without subjecting your rig to high SWR. It also enables you to measure your antenna's 2:1 SWR bandwidth and analyze multiband performance. You can check SWR and outside ham bands without transmitting and violating FCC rules, and adjust your antenna tuner for a perfect 1:1 without creating QRM. It takes the guesswork out of building and adjusting matching networks, baluns, and antennas. You can accurately measure the distance to short or open in failed coax, measure coax length in feet, loss in dB, velocity factor, and impedance, and measure inductance and capacitance. The analyzer can also help troubleshoot resonant frequency, Q of traps, stubs, transmission lines, RF chokes, tuned circuits, and baluns.
The MFJ-259D features a built-in Ni-MH/Ni-CD charger circuit, battery saver, low battery warning, and smooth reduction drive tuning. It can be powered by 10 AA or Ni-MH batteries (not included) or 110-240 VAC with the optional MFJ-1312D. The rugged, compact all-aluminum construction makes it handheld and measures 4Wx6¾Hx2D inches.
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