- 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-945-E Help

Reviews Summary for MFJ-945-E
MFJ-945-E Reviews: 59 Average rating: 3.4/5 MSRP: $109.95
Description: 160 through 6 M 300 watt metered compact mobile 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-945-E.

<— Page 2 of 6 —>

KC8Y Rating: 2/5 Aug 20, 2015 11:56 Send this review to a friend
NO MORE MFJ, FOR ME!!!!! again, for me  Time owned: 0 to 3 months
I had, just recently acquired this tuner BRAND NEW.
Tested the device out; found numerous items-either
NOT wired/connected (switches for bypass, lamp and inductance control)...For the cost, should have worked--NO QC...Going to get another manufacturer,
don't mind a higher price for good quality...
SMAUG Rating: 0/5 Dec 5, 2014 05:37 Send this review to a friend
Arcs internally at less than 100 W  Time owned: 0 to 3 months
Bought this used from a fellow ham. (thanks for that) On the second day of ownership, while tuning my Kenwood TS-440S on a long wire antenna with 9:1 UNUN, I heard a weird sizzling sound and the cross needles started jumping all over the place.

I thought at first maybe dirty switch contacts, so I shut er down and cycled the inductor tap switch back and forth a few times. That didn't fix the problem.

This is without an amp, at maybe about 90 W; less than 1/3 of the tuner's rating.

I've asked the seller if I can return it for a refund. (bought it on If he says no, I'll have to leave him a negative post and pop it open to try to figure out where the arcing is happening. If it is to the case, it should be an easy fix with some electrical tape or an insulating sheet applied to the right spot. If proper spacing wasn't maintained and it is between wiring/connections of different circuits, that's easy too. If it's internal to the components, that's bad news. I'll read the rest of these reviews now for a clue.

The screws on the chassis look mint, so I don't think any monkeys have been inside it. (yet!) Therefore, I can only surmise that it is bad design by MFJ.

If I can't fix it, I'll probably pick up a nice LDG auto-tuner of some kind, when my checkbook recovers from this $100 mistake.

I really wanted to like this tuner. The inductor switch feels very solid; stops in position as it should. The cross needle meter is good, though hard to read at an angle. (as any analog meter is) The built-in dummy load was an attractive feature too.
W4KVW Rating: 4/5 Jan 2, 2014 21:51 Send this review to a friend
OK but not GREAT!   Time owned: 3 to 6 months
Worked great on my G5RV on every band except 60 & 160 meters.It should not have worked on 160 meters because the G5RV is much to short.I did however think it would tune the G5RV on 60 meters but it would not get it below 2.5.1 or so.It also worked great on my Antron 99 for 10,12,& 15 meters.I purchased it used & it was well worth what I paid for it though the light was also out when I received it.

KA4KOE Rating: 1/5 Nov 12, 2013 09:49 Send this review to a friend
Not a 300w tuner  Time owned: 0 to 3 months
Tuning an antenna on 40m with 100w and hear that familiar sizzling sound inside....ARCING. Definitely NOT a 300w tuner.
KG4RUL Rating: 5/5 Jun 8, 2013 14:46 Send this review to a friend
No problems at all!  Time owned: more than 12 months
I have regularly used this tuner at 100w to tune everything from the no-radial verticals from Comet and Diamond to a cobbled together loop to a G5RV to and inverted V, etc. with no problems whatsoever.
KA7PUO Rating: 0/5 Jun 8, 2013 08:13 Send this review to a friend
no more MFJ  Time owned: 0 to 3 months
bought one new and tried it on 3 different antennas... Vertical, dipole and end fed herz.. this tuner did nothing. It did not even increase the noise level as per the instruction manual. Turning the inductance and antenna knobs had no results at all. The tuner DOES NOT WORK !!! I went through the manual 3 times all with the same result .. NADA !!!However the bypass button worked just fine (AT LEAST SOMETHING WORKED !!)
No more MFJ for me EVER !!
KA7PUO Rating: 0/5 Jun 8, 2013 07:35 Send this review to a friend
piece of junk  Time owned: 0 to 3 months
bought a new 945e on june 5, 2013. got it delivered, opened it and it looked good. tried it out on several different antennas with my Yaesu FT847.. Dipole, Vertical and end fed herz, None of them tuned as I went through the instruction manual. I did not even get a change when tuning for increase in noise level as described in the manual. no change from any setting with the inductor or antenna tuning controls. I am thoroughly disgusted with this piece of worthless trash.. NO More MFJ !!!!
K4HYJ Rating: 5/5 Feb 10, 2013 20:32 Send this review to a friend
In the go box  Time owned: 3 to 6 months
I have been using this tuner with a portable HF rig in a go box for field day and ARES exercises. I use it with a couple of cut dipoles for 20 meters and 80 meters. I have recently been using it with a screwdriver portable in the field. It tunes fine and the meter seems accurate enough. On 100 watts out, it compares with my bird 43 - same with 25 watts.

I like the fact it has a bypass switch and a lighted dial that can be turned on or off.
K5YY Rating: 0/5 Jan 14, 2013 11:33 Send this review to a friend
Horrible product  Time owned: 0 to 3 months
Was given one, no arcing hisory, looked OK inside before I used it. Checked caps and components. OK at 100w transceiver power but trying at just 1/2 stated power rating is a BIG mistake. This should be labeled 300 PEP and only about 100 CW keydown. Suggest you spend a tad more and get a good USED Drake MN7 300 watt rated tuner or an MN2000/2700 with a true KW rating, just in case you ever want to run a 200 watt transceiver or a KW amp. You will do a LOT more damage to your rig than the extra cost of a decent, good used tuner. STAND CLEAR at all cost!
KG4RUL Rating: 5/5 Jan 14, 2013 04:29 Send this review to a friend
A Tuner Has To Know It's Limitations  Time owned: more than 12 months
Have had my 945-E for over 9 years. I know enough to not feed ANY MFJ tuner at it's rated power. This is equipment built to a price point and if you acknowledge that, it will give you many years of service. At 100W, I can tune anything short of a wet string.
<— Page 2 of 6 —>

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