- Amateur Radio (Ham Radio) Community

Call Search

New to Ham Radio?
My Profile

Friends Remembered
Survey Question

DX Cluster Spots

Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement

Reviews Categories | Antenna Tuners/Matching Networks | MFJ-971 Help

Reviews Summary for MFJ-971
MFJ-971 Reviews: 52 Average rating: 3.7/5 MSRP: $99.95
Description: 1.8 - 30 MHz 200 watt portable antenna tuner
Product is in production.
More info:
Email Subscription
You are not subscribed to this review.

My Subscriptions
Subscriptions Help

You can write your own review of the MFJ-971.

Page 1 of 6 —>

HB9PJT Rating: 5/5 Jan 4, 2017 04:35 Send this review to a friend
Fine Antenna Tuner  Time owned: more than 12 months
I have that tuner since many years and used it many times for portable vacation use. It is nice made, looks good and works very fine up to 200 Watt with different wire antennas.

The reviewer KB8LKH had RF burn from the antenna knob shaft. That is related to his antenna and to the station grounding. But not to the tuner. When his tuner smokes, then his antenna impedance does not meet the impedance MFJ does rate. Maybe also when it arcs. I am wunder what kind of "antenna" this ham tried to tune.

73, Peter - HB9PJT
KB8LKH Rating: 0/5 Jan 3, 2017 17:11 Send this review to a friend
MFJ 971 COMPLETE GARBAGE!  Time owned: more than 12 months
I purchased an MFJ-971 a little over 1 year ago.

Right off the bat MFJ needed to be contacted.

I had to order a replacement bottom cover because the bottom was not cut level.

I guess mfj wanted to make good, because they sent me two bottoms.

Two months after owning the tuner, the light for the back lit meter burned out.

After about 6 to 7 months, most of the printing on the front of the tuner was faded. I had to use my label maker to relabel the front of the tuner.

About 3 months ago I had to order a new inductor nob. MFJ sent the wrong one, even though their tech said it was the correct one. After three times, MFJ finally sent me the correct knob.

- Don't bother to tune on 80M.
- Don't bother to tune on 10M
- Most deffinatly don't tune on 160M! Was never intended to tune on 160M.

Tuner Arcs

RF burn from antenna knob shaft (metal).

100 watts. Yea right. When running 100 watts, internal parts start to "smoke".

This is just a really really lousy tuner.

I borrowed an MFJ-949E from a friend years ago, and was completely satisfied with it. I should have spent a little bit more, and got another 949E. I have since order a 949E.

WA1UFO Rating: 4/5 Oct 11, 2016 20:54 Send this review to a friend
Good!  Time owned: more than 12 months
I generally use this with my 25 watt 10 meter monobander but tried it at 100 watts with my Yaesu rig and a 75 meter coaxial fed windom and it always does the job! The only band I haven't used with it is 160 meters. I like the looks and the construction quality seems decent. I have 3 MFJ tuners and have never had a problem with any of them! They make life easier for me as resonant antennas don't stay that way long here where I live with several feet of snow beneath my wires and ice all over the place for 5 months a year. I just use the ATUs to tweak them up and away I go.
M5AEO Rating: 5/5 Feb 8, 2016 08:57 Send this review to a friend
So good I bought two!  Time owned: more than 12 months
Onto my second one now! It really is a bargain. My first choice when going portable, but also use it in the shack.
N3IDG Rating: 5/5 Nov 6, 2015 16:04 Send this review to a friend
great 4 qrp  Time owned: 0 to 3 months
I bought mine for qrp use opened it moved the jumpers and it works as advertised. I tune a 66 ft flattop fed with ladder line from 80-10 with no issues antenna is only 25 ft or so.
M0KFO Rating: 5/5 Mar 26, 2015 14:28 Send this review to a friend
Good, easy to use & compact.  Time owned: 0 to 3 months
Okay, it's my first ATU, so I've nothing to compare it to, always having used resonant aerials.

First, it does the job, for my G5RV. I get 1:1 from 10m - 80m and 160m. Yes, I hate to think of the losses on 160m, but it does tune down, and not just for RX but TX as well.

It's easy enough to use (it's a base unit for me), even if the inductance switch is a bit agricultural, tunes quite quickly and it looks decent. I haven't run it anywhere near its quoted power, so I can't make comment on that, which also means no RF exposure (or very little if you're going to nitpick).

No, the meter isn't massive, but it hasn't shrunk in between the dealer and my shack, so I knew what I was getting.

For UK buyers, it was 120 from Nevada through the online people named after a big river.
WA6MOW Rating: 5/5 Nov 14, 2014 23:35 Send this review to a friend
Another great value from MFJ.  Time owned: 0 to 3 months
I own two of these small tuners. They work great. I love the size along with the built in meter. For a little over $100 bucks you can't go wrong.
EA5IGC Rating: 4/5 Nov 1, 2014 07:34 Send this review to a friend
Good enough  Time owned: more than 12 months
I've used this tuner on various wire antennae (including a G5RV mini) for a couple of years. It's OK, but doesn't have a lot of bells or whistles. Changing between QRP and QRO modes means opening the box and changing jumpers. Now that I'm using a MFJ-949E, I do have to question the value-for-money of the 917. The 949 offers 2 coax antenna connections + balanced line wire switched from the front panel with bypass on all, dummy load, QRP/QRO switch on the front panel and peak/average reading. With all of these extra truly useful features, albeit for more money, I'd recommend the 949 over the 917 any day.

In summary: if you're backpacking or really on a small budget, this is a good tuner. Otherwise get a 949E.
K7RVX Rating: 5/5 Jun 24, 2013 15:27 Send this review to a friend
Great Little Tuner  Time owned: 0 to 3 months
Bought this tuner in early June 2013. It worked perfectly out of the box and I have been very successful this month on 80 through 15 meters. I use the MFJ-971 with my trusty old FT-817 and my Tokyo Hy Power 50-watt linear driving an 80 meter horizontal loop at 10 feet up. I operate at the 5 watt and 50 watt levels most of the time. If I get the "QRP or nothing" bug again, I will try the tuner's QRP jumper setting. So far, I can work about 90% of the stations I hear, even with all the QRN on 80.

I love all my MFJ products, especially the tuners. I've owned about a dozen MFJ products over the years and never had any difficulties with poor engineering or poor assembly. I had to get under the hood only once. An 1N34a diode got zapped by some ESD on the homemade ladder hooked to my 949E tuner. A 15-minute fix got it back on the air. That same tuner has been on line since 2003. My son (a new General) is now using it.
N6AIR Rating: 4/5 Jan 24, 2013 11:59 Send this review to a friend
Performs better than it looks  Time owned: more than 12 months
This little tuner consistently works well. I've used it mobile, portable, and base and it does its job.

There are a couple of compromises you make for the smaller size. As stated in other reviews, there's no bypass feature which is sometimes nice to have. Also, the meter is a lot smaller so you are not able to fine tune as well as you would with a larger tuner.

It would be preferable to use a tuner with a larger meter if you are adjusting the length of an antenna during initial installation. But if you've done that already and all you want to do is set it for low SWR, this tuner will do the trick with little effort.

With a larger meter, you can fine tune, which for some strange reason is enjoyable, but you have to keep in mind once your SWR is reasonably low, getting it a micro-notch lower isn't going to make any noticeable difference.

If you want to eliminate loss due to SWR, this tuner will do it without a problem. If you enjoy plain around to see if you can get a long needle dip further than it's ever dipped before, get a larger tuner.

One nice feature of this tuner is that you can feed it directly with ladder line.

If you have the SG2020, it makes a nice portable package because they're the same size.

If you are going portable with the FT 817 and you just want to eliminate loss from SWR, get the Elecraft T1. It's a lot smaller.

On a couple of occasions I was in the field with the MFJ trying to tune a very poor antenna and I just couldn't do it but I've found that if the antenna is simply mediocre, tuning it is no problem.

I like my MFJ-971. I'm glad I got it.

Page 1 of 6 —>

If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.