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SWR Antenna Analyzer MFJ-259C HF VHF 0.53-230Mhz

by MFJ
4.1 out of 5 stars 28 customer reviews

Price: $266.90 & FREE Shipping. Details
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Sold by eDeal Nexus and Fulfilled by Amazon. Gift-wrap available.
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  • You can read your antenna's SWR and Complex Impedance 530 KHz to 230 MHz.
  • Built-in frequency counter, Ni-MH/Ni- CD charger circuit, battery saver, low battery warning and smooth reduction drive tuning.
  • Large easy-to-read two line LCD screen and side-by-side meters clearly display your information.
  • Read SWR, return loss and reflection coefficient at any frequency simultaneously.
5 new from $266.90
$266.90 & FREE Shipping. Details Only 1 left in stock. Sold by eDeal Nexus and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • SWR Antenna Analyzer MFJ-259C HF VHF 0.53-230Mhz
  • +
  • uxcell 2 Pcs S0-239 UHF Double Female Coax Adapter Connector Plug
  • +
  • 50ft Rg8x Coax UHF (Pl259) Male/male 50 Ohm Antenna Cable
Total price: $302.84
Buy the selected items together


Technical Details

  • Brand Name: MFJ
  • Model Number: MFJ-259C
  • Power Source Type: AC & Battery
  • Item Height: 6.75 inches
  • Item Length: 4 inches
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Product Description

Read your antenna's SWR and Complex Impedance 530 KHz to 230 MHz. Read Complex Impedance as series resistance and reactance (R+jX) or as magnitude (Z) and phase (degrees). Determine velocity factor, coax cable loss in dB, length of coax and distance to a short or open. Read SWR, return loss and reflection coefficient at any frequency simultaneously. Read inductance in uH and capacitance in pF at RF frequencies. Large easy-to-read two line LCD screen and side-by-side 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. Just set the bandswitch and tune the dial -- just like your transceiver. SWR & Complex Impedance are displayed instantly! Find your antenna's true resonant frequency. Trim dipoles and verticals. Adjust your Yagi, quad, loop & other antennas, change antenna spacing & 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 from 530 KHz to HF to VHF -- 530 KHz -230 MHz! Check SWR outside the ham bands without violating FCC rules. Accurately measure distance to short or open in failed coax. Measure length of a roll of coax, coax loss, velocity factor & impedance. Measure inductance, capacitance. Troubleshoot and measure resonant frequency & Q of traps, stubs, transmission lines, RF chokes, tuned circuits and baluns. Adjust your antenna tuner for a perfect 1:1 match without creating QRM. And this is only the beginning! MFJ- 259C is a complete ham radio test station including -- freq counter, RF signal generator, SWR AnalyzerTM, RF Resistance & Reactance Analyzer, Coax Analyzer, Capacitance & Inductance Meter & more!

Product Details

  • Product Dimensions: 4 x 2 x 6.8 inches ; 3 pounds
  • Shipping Weight: 1.7 pounds (View shipping rates and policies)
  • ASIN: B00IRPMLTS
  • Item model number: MFJ-259C
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (28 customer reviews)
  • Amazon Best Sellers Rank: #11,452 in Electronics (See Top 100 in Electronics)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: July 30, 2010

Customer Reviews

Top Customer Reviews

I've been using this antenna analyzer for two years and it's the best you can get for the price. I use it mostly for impedance, frequency, and SWR measurements but it can measure other factors as well. This is invaluable if you are pruning or tuning any sort of antenna or trap.

It really is simple to use. Select the frequency range, attach the antenna to the SO-259 socket on the unit, power on and adjust the tuning to dip for minimum SWR. You will see the resonant frequency in the digital display and the impedance and relative SWR in the two analog meters. This procedure takes a minute. Doing it by the cut-and-try method could take an hour or more.

I've used it as a grid dip meter with the inexpensive accessory coil set and it works well. I've tested it to measure coax length and it's fairly accurate. It will measure values of capacitors but not very well because there are too many external factors that can skew results (lead length, proximity to metal, hand capacitance, etc.) and the circuitry in this analyzer can't handle it.

It's supposed to measure a whole host of other factors, but I haven't tried those (attenuation, Q, velocity factor, and others) and I think I'll just continue to use test equipment designed for those specific measurements.

Quality Control: There have been a lot of complaints about MFJs lack of quality control in equipment manufacturing (just take a look at comments on eHam net) but I've bought a few MFJ items (QRP tuner, power supply, dummy loads) and had no problems. HOWEVER when I bought this analyzer there was a rattling noise and when I took the cover off a small machine screw nut fell out. I partially disassembled the unit but could find no place where this nut belonged.
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Unit met all my needs for setup of antenna requirements. My only concern was it was possiblily not a new item as indicated but a used or returned unit. The housing had several big scratches and gouges on the edges. You wonder when the description site says "Only two left". Delivery was very good.
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Everything is working great and I'm still learning to use all of the functions. The only negative that keeps it from getting 5 stars is that the SWR from the digital display and the analog display are not calibrated together.
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I use this for adjusting a base loaded vertical on the roof of my house. I can't imagine how many trips up and down the ladder this gem has saved me. Also, it is a great tool to have when setting up for Field Day!
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By Samuel D. Self on February 24, 2015
Verified Purchase
The unit I got had issues. I followed the fairly simple instructions on how to detect shorts in cables and the results were wildly inconsistent and wrong. With a 9' cable it would tell me it was 13' long on one test and then 20 feet long on another.

It can run on DC or battery power, which is nice, but it takes 8 or 9 AA batteries that get put in to a hack job compartment. The enclosure on the unit I got was poorly done. They manually cut a section of the housing off and stuck in cheap battery caddies. Not very secure and not weather tight at all. For the $265 I would expect a better job done on construction.
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Without having the ability to test the accuracy, I am left to assume this works fine, and by all visible indication it does. So far I've only analyzed cables against a dummy load and VHF antennas. My Comet GP3 and Arrow J-Pole test good across the 2-meter band and a couple of my decent performing HT antennas are each within a predictable margin. In short, no anomalies to report.
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Works as advertised. Make sure to get rechargeable batteries for it, it does go through AA batteries pretty fast. As accurate as it needs to be for a ham working out antenna issues.
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been saving up for one of these for a while because I build antennas and it takes the guess work out of it
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