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Reviews Categories | Antennas: HF: Yagi, Quad, Rotary dipole, LPDA | MFJ-1775 6-Band Rotatable Mini-Dipole Help

Reviews Summary for MFJ-1775 6-Band Rotatable Mini-Dipole
MFJ-1775 6-Band Rotatable Mini-Dipole Reviews: 18 Average rating: 4.1/5 MSRP: $$239.95
Description: 40/20/15/10/6/2 meter mini 14 foot rotatable dipole. Its tiny 7-foot turning radius fits on the smallest roof -- itís perfect for town houses, apartments and condos.

The MFJ-1775 is inconspicuous and low profile -- not much bigger than a TV antenna and can easily be turned by a lightweight rotator like the HyGain AR-35.

The MFJ-1775 dipole directivity reduces QRM/noise and lets you focus your signal in the direction that you want -- so you can work some real DX. You can operate 6 bands -- 40, 20, 15, 10, 6 and 2 meters -- and run full 1500 Watts SSB/CW on all HF bands!

The MFJ-1775 features automatic band switching and uses highly efficient end-loading with its entire length always radiating. With 6 and 2 Meters thrown-in, you have ham radioís most versatile rotatable dipole!

Each HF band uses a separate, efficient end-loading coil wound on fiberglass forms with TeflonTM wire, and capacitance hats at each end (no lossy traps). 6 and 2 meters are full-length halfwave dipoles.

Built-to-last -- incredibly strong solid rod fiberglass center insulator and 6063 T-6 aircraft strength aluminum tubing radiator.

Assembles in an afternoon. Adjusting one band has little effect on other bands.
Product is in production.
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KA4NGW Rating: 0/5 May 24, 2019 18:41 Send this review to a friend
20 meter burn out  Time owned: 0 to 3 months
After burning out Two MFJ 1775's MFJ did refund my money.
The first antenna burnout at the 20meter coil leaving the end just hanging. MFJ quickly replaced the antenna. The second one went up about 30ft and started arcing at the 20meter coil with only a 100 watts applied. As mentioned MFJ refunded the purchase price excluding $90 I paid for shipping the antennas back.
I am very dissatisfied with the antenna and may not buy from MFJ again, though the tech's are helpful.
N5WRX Rating: 4/5 Dec 20, 2018 18:27 Send this review to a friend
Good compact antenna  Time owned: 0 to 3 months
Read the tuning instructions carefully ... the 40m spokes are not the same on both ends. best I can get is a 1.5 swr on 40m. The other bands tuned up OK.
K4MJA Rating: 5/5 Mar 7, 2018 07:13 Send this review to a friend
Great antenna for temporary installation  Time owned: 0 to 3 months
I needed antenna to:
(1) push up after dark on MaxGain fiberglass pole at my antenna restricted QTH,
(2) been able to zero in on the signals,
(3) been able to pour down the cable at least 500W.
MFJ-1775 fits the bill perfectly. Easy to assemble and tune with antenna analyzed (the must!). I covered the coils with electric tape to protect them from changing parameters in rain, no other modifications done. Operation-wise, it exhibits some directivity on 40m, more so on the shorter bands. With the antenna tuner, it also work on WARC bands. All in all, very positive impressions. Full review in my blog at
VU2JE Rating: 5/5 Nov 20, 2017 02:23 Send this review to a friend
Amazing antenna for apartment dwellers  Time owned: more than 12 months
I cant recommend this antenna enough.. i live in Mumbai an apartment city, and needed a small antenna to put on our apartment building terrace..
This antenna is now working for over two years and well.. i can even get on 7Mhz with this tiny antenna, and also 2m (for a local net).. it is quite durable so far, and needed no maintenance.. swr levels are also reasonable across most bands..
So for those looking for a small antenna (rotatable) this one fits the bill.. also very easy to install and maintain by a single person (unlike heavier 2 element beams).. also quite inconspicuous if this is an issue (for me it is)!
So get some directionality (even if not as good as a beam), and multi band operation (does not have lossy and trouble giving L-C traps either).. this is your antenna.. good one from MFJ!
W9JTC Rating: 3/5 Sep 20, 2017 09:04 Send this review to a friend
Still working on it  Time owned: 0 to 3 months
I bought this antenna and have it assembled on a temporary mast. Keep in mind keep away from a tower or any metal as it will interact with it. Tuning of 10 through 20 meters was very easy. 40 meters not great. Ordering new spokes to try something different. 6 meters tuned with some effort. Still trying to get 2 meters. Can't get anything close for resonance with it all the way out or in. Calling in an elmer for this. Materials look very good. Will update once I get it on the tower and working. Do not try to tune this without an analyzer like the mfj 259. You will pull your hair out.
KB6HRT Rating: 5/5 Oct 3, 2015 16:01 Send this review to a friend
VERY NICE+MFJ 939K  Time owned: 0 to 3 months
Installed the MFJ 1775 at 45' antenna works wonderful, lots and lots of contacts in and out of the US using a TS590SG the MFJ 939K antenna tuner, one click an your there everything is right about this setup, could not be happier!...........kb6hrt
K6KNS Rating: 5/5 Apr 7, 2015 09:24 Send this review to a friend
Made plenty of QSO's  Time owned: more than 12 months
This is my first HF antenna so canít compare it to others like it but it has worked well for me. It was a chore to tune and the SWR did change when put on my rooftop. My Elmer and I had to take it down a couple of time to re-tune. Since I hold a General class license, itís tuned for the upper portion of the bands. I added a rotor but the antenna is not directional like a beam so you donít have to use a rotor. If you get local electrical interference, just turn the mast by hand to null the noise. My antenna is broadside east and west and I have never used the rotor. As of this review, I have made about 2,000 contacts on SSB Phone logging 102 countries (entities) and Iím one state shy of confirmation for my WAS award. This antenna is a compromise antenna and it has held up well here in Northern California. If you have the room, consider the Cushcraft MA5B or similar. That will give you workable SWR on all the bandwidth for 10-12-15-17 meters. On 20 meters, it will be narrow so youíll tune according to what you want to work. The MA5B wonít give you 40 meters like the MFJ-1775 so keep that in mind.
KC2OTD Rating: 5/5 May 29, 2014 11:37 Send this review to a friend
MFJ-1775  Time owned: months
W5RHR Rating: 4/5 Nov 21, 2012 18:09 Send this review to a friend
surprising results BUT  Time owned: 0 to 3 months
I echo the comments concerning tuning.I managed to mount the antenna in its final location (on a rotator app 6 feet above my roof) so I was able to tune it in place with the aid of an MFJ 259.
No matter what I tried I could never obtain anything lower than 1.9 on 40, even at its resonant frequency. The other HF bands tuned nicely with 1:1 SWR and fairly broad banded.

The box was missing the 6 meter stubs, a call to MFJ found them at my house the very next day, so GREAT customer service.

Another issue I suffered was RF on 40 meters, with just 100 watts (set off my alarm system!). I would a choke at the feedpoint and that seems to help somewhat.
N4UP Rating: 5/5 Jul 16, 2012 06:29 Send this review to a friend
Excellent !!  Time owned: 0 to 3 months
I've had this for about two months and it works extremely well on 40-20-15-10 meters given that I have it installed in my third floor attic. I did not incorporate the 6 or 2 meter elements.

Easy to assemble, but it takes some time to trim the spokes ( with eye protection ) to the resonant frequencies of interest, starting with the longest wavelength band and then trimming the remaining bands progressively, one at a time. The antenna "starts" tuned to just below each band. Best to trim evenly in small increments, as the trimming is not necessarily linear, e.g., the first 1" of trim may not increase the resonant frequency the same amount as the second 1" of trim. Best to go in 1/4" increments. Important to trim all spokes of a band the same amount ( on both ends of the antenna ), to keep the SWR low. Tedious, but worth the effort. Trimming instructions are not entirely clear or consistent, but even so I had no trouble trimming.

You should keep in mind that where you do the trimming may not result in the same resonances as where the antenna is finally mounted, but the instructions explain this. Worst case you will need to bring the antenna down, obtain extra spokes, and try again. Mine was best case, I was able to mount the antenna exactly where it will operate and do the trimming in place.

Also, in my case, the resonant frequencies ( and trimmings ) are influenced by proximity to other objects in the attic ( like another antenna ), which effectively lower the resonant frequencies.

I used the MFJ-259b SWR analyzer connected at the station end of the feed-line to determine the antenna resonances. So up and down the attic stairs for each trimming. The MFJ-259b made the job easy.

Performance. Wow. Hard to believe how well it performs in my attic with 200 watts ( I have since increased max to 600 watts, but it works very well even at 200 watts ). Only six inches clearance from the rafters and fairly close to another antenna.

In six weeks I have over 800 CW QSOs including 560 DX. It is very rare that someone doesn't return my call immediately.

Of course it would be better up in the open air. And of course it is not going to compete with a multi-element yagi on a tower. But if you have limited space or HOA restrictions, then this is a very good choice.

One final note. The bandwidth on 40 meters is quite narrow ( 50 KHz ). So for me, on 40 meters, it only works on the CW end of the band because that is where I operate the most. In the 40 meter phone band the SWR is rather high. So you have to choose one or the other, or have a better external tuner than I have.
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