MFJ-259C 530 KHz - 230 MHz SWR Analyzer
World’s most popular SWR analyzer is super easy-to-use
The famous MFJ-259C gives you a complete picture of your antenna’s performance. You can read your antenna’s SWR and Complex Impedance 530 KHz to 230 MHz continuously with no gaps.
You can read Complex Impedance as series resistance and reactance (R+jX) or as magnitude (Z) and phase (degrees).
Determine velocity factor, coax loss in dB, coax length and distance to a short/open.
Read SWR, return loss and reflection coefficient at any frequency simultaneously.
You can read inductance in uH and capacitance in pF at RF frequencies.
Large easy-to-read two line LCD screen and side-by-side analog meters clearly display your information.
Built-in frequency counter, Ni-MH/Ni-CD charger circuit, battery saver, low battery warning and smooth reduction drive tuning.
Super easy to use! Just set the bandswitch and tune the dial -- just like your transceiver. SWR and Complex Impedance are displayed instantly!
Here’s what you can do
Find your antenna’s true resonant frequency. Trim dipoles and verticals.
Adjust your Yagi, quad, loop and other antennas, change antenna spacing and height and watch SWR, resistance and reactance change instantly. You’ll know exactly what to do by simply watching the display.
Perfectly tune critical HF mobile antennas in seconds for super DX -- without subjecting your transceiver to high SWR.
Measure your antenna’s 2:1 SWR bandwidth on one band, or analyze multiband performance.
Check SWR outside the ham bands without violating FCC rules.
Take guesswork out of building and adjusting matching networks and baluns.
Accurately measure distance to short or open in failed coax. Measure length of a roll of coax, coax loss, velocity factor and impedance.
Measure inductance, capacitance. Troubleshoot and measure resonant frequency, Q of traps, stubs, transmission lines, chokes, tuned circuits, baluns.
Adjust your antenna tuner for a perfect 1:1 match without creating QRM.
MFJ-259C is a complete ham radio test station with frequency counter, RF signal generator, SWR/Resistance/Reactance/Coax Analyzer, Capacitance/Inductance Meter and much more!
Use 10 AA or Ni-MH batteries (not included) or 110 VAC with optional MFJ-1312D.
Compact 4W x 6 3/4H x 2D inches
Gotta admit, I'm disappointed with this analyzer. It's a really useful piece of test gear, no question, and it does work, but I have two issues. First (and worst), this thing is a battery hog. It'll suck your batteries dry in no time, even when it's not on. And to replace your batteries, you have to unscrew the back - no quick opening here. So I like that it's portable, but you'll spend a fortune in batteries if you use it frequently. Second is the tuning itself. It's a bit clunky for my liking ie a tiny adjustment of the knob and there's a huge swing in frequency. I'd prefer something a little more subtle. But this is a minor complaint. The battery is the big problem. So does it work? yes. Is it helpful around the shack? Absolutely. Is it good value for the money? No.