- 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 | Antennas: VHF/UHF+ Directional (Yagi, quad, etc.) | mfj-1768 Help

Reviews Summary for mfj-1768
mfj-1768 Reviews: 6 Average rating: 2.5/5 MSRP: $79.95
Description: 2 and 440 meter beam
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-1768.

KM3F Rating: 1/5 Oct 9, 2016 15:01 Send this review to a friend
Quality control, and caution not user friendly..  Time owned: 0 to 3 months
This is one of those items that doesn't need much user time to access it's design.
Yes the assembly is a bit difficult and assembly instructions can be much improved.
Boom holes had to be over sized so insulators would set in without excessive force.
The strip line Diplexer board needed some work on the feed through points.
2 meters match was very good according to my Commet CAA 500 MK II analyzer. 440 side resonated down in the 390 mhz. range.
What was to do? Take a chance and try moving the match up in band without upsetting the 2m match.
It was accomplished to a satisfactory degree by altering the 440 driven element lengths even though they were correct according to conventional formula 476/f X 12 divided by 2 for length each side in inches.
Also offsetting the first 440 director to help improve the match.
These changes indicate the strip line Diplexer physical design needs to be revisited for design dimensions.
Overall this antenna can now be used on both bands with very flat SWR on 2m and good low to mid band SWR rising to about 2.5 toward the upper end where it is of lesser importance for FM repeater use.
Attempting modification without using an analyzer can result in a waist of time and unusable parts, in the end.
I have reservation as to the effects of water and Snow accumulation on the Diplexer board without a cover.
It seems the MFJ company needs to assign an evaluation tech or engineer to assess every product line that needs to be assembled for Instructions, assembly and performance to find out what's going on with their product complaints.
Do not expect a telephone call to answer these kinds of issues if the person has no knowledge of what's going on when they have not assembled and tested the product.
W8AB Rating: 2/5 Nov 13, 2014 21:30 Send this review to a friend
Not soldered Properly  Time owned: 0 to 3 months
I put the antenna together with considerable difficulty due to the "snap-rings" used to hold the elements in place. What a headache.

Once assembled, the antenna had a terrible match across all of 2 meters and a somewhat better match on 440. Contacted MFG, and they were very little help. They looked at my photo and said it looked like I put the antenna together correctly.

They had no suggestions on how to fix it and did not respond to requests to return the antenna. So I was on my own. It looked like a reasonable design, other than the snap-rings, so it should be working. I tried different coax and mounting without any change.

Next I carefully inspected the printed circuit board that is used to feed the antenna. I noticed that a number of the thru-holes where soldered but the solder did not flow all the way through to connect to both sides of the board on all the holes. Some were soldered correctly so a DC connection was being made, but most were not soldered all the way through to both sides and did not make contact to both sides.

So I added a short piece of wire (thru-holds without wires are prone to failure, even when soldered correctly) to each thru-hole by re-soldering them all so each hole connects the top and bottom circuit board traces with the short wire.

What a huge difference it made, the antenna started to work.

If you have one of these antennas and it does not work properly, check these solder points.

Since the MFJ design does not include a wire in each of these thru-holes, they are much more likely to fail after a few years in the sun, and cold.

It's an easy fix if you have the problem, once you get the antenna on the ground.

The customer should not have had to fix this on their own. MFJ was totally unresponsive after my first message.

I have to wonder. MFJ does not seem to understand this antenna well enough to build it correctly or support it.

So I gave it a two (2) because it is working, now that I fixed it, but what an ordeal.
KN4MC Rating: 4/5 Feb 9, 2008 15:47 Send this review to a friend
Good LITTLE antenna  Time owned: more than 12 months
I put this antenna up a little over a year ago. I have made 2 meter (SSB) contacts well over 500 miles away with only 50 watts. I made one contact on (SSB) 70cm to Canada from Western Kentucky with only 20 watts, (VE3TMG has a great station).
If you just want an antenna to get on 2m & 70cm SSB (or set it vertical for FM) and do not have a lot of room for larger antennas, this is a good antenna. I am thinking about stacking 2 of them just to see if it can be done.
KB9WSL Rating: 4/5 Jul 8, 2006 19:02 Send this review to a friend
Works for me  Time owned: more than 12 months
When I opened the box I was not sure about the antenna when I saw the feedpoint connection on a circuit board type setup. But being a new ham
in 2000 I assembled the antenna and mounted it at 66 feet on my tower. The antenna is mounted horizontally for SSB work. The antenna has performed well for me and has been exposed to Northern Indiana summers and winters for 6 years now without any problems. SWR on both bands is nearly flat in my experience. While not a contesting antenna by any means..I would recommend it to a new ham who does not have a big budget.I will eventually take this antenna down and use it for rover and portable use due to its size..(5 foot boom)
WB5MHA Rating: 2/5 Nov 27, 2005 19:13 Send this review to a friend
poor quality  Time owned: more than 12 months
"cheap" is a word that comes to mind regarding the price as well as the quality of this antenna.

Instructions are not clear. Holes and parts do not line up. Workmanship is poor. It is made just well enough to work.

In all fairness it does load up. It is directional but I doubt it's gain figures.

For a little more money you can buy a higher quality beam. Expect what you get from a product that is made in China by slave workers who really don't care.

Mine sits in the yard while my coax is put to better use.
W5RHR Rating: 2/5 Apr 11, 2005 11:09 Send this review to a friend
poor quality  Time owned: 0 to 3 months
very poor manufacturing and design. the parasitic elements are not in line with the driven element assembly, which is a copperclad circuit board.
the mounting holes for the matching assembly were not at a 90 degree angle to the parasitic elements, resulting in the driven elements being cocked. I had to remove the assembly and drill out the holes till I could line up the assembly.
Also MFJs method for securing the parasitic elements were to use a type of speed nut to hold the element in the boom. lines were scribed in the elements to capture the speed nuts, but the lines were scribed for a larger diameter boom.I had to manually center the elements on the boom.
In fairness, the antenna does have a low VSWR for the band it is cut for, but I have yet to make a contact with it.Purchase a Cushcraft instead, the few dollars you save on the MFJ are not worth it.

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