MFJ 10 meter Moxon rectangle

[AF5C]

I see that MFJ has come out with a 10 meter Moxon Rectangle antenna.  I like the price on it-$75 at R and L Electronics.  I like the size and weight, would fit nicely in my setup.  However, MFJ's ad says the gain is 3.3DBi.  That put it at .5 db gain over a dipole or something like that.  Is that really worth it for the price.  Yes, it has some F/B to it, but would it be worth the money over the G5RV I am currently using on 10m?

John AF5CC

[W4OP]

They can't even spell Moxon- what  makes you think they have the gain correct?

Dale W4OP

[N6AJR]

Do a search on google and build your own.  remember those old folding patio chairs with the plastic webbing.  Cut the 90 degree corners out of them and use  the appropriate sized aluminum tubes to build your own, a self tapping sheet metal screw at the joints will hold it all together. almost free if you get the lawn chairs at  goodwill or  garage sales.

[M6GOM]

I see that MFJ has come out with a 10 meter Moxon Rectangle antenna.  I like the price on it-$75 at R and L Electronics.  I like the size and weight, would fit nicely in my setup.  However, MFJ's ad says the gain is 3.3DBi.  That put it at .5 db gain over a dipole or something like that.  Is that really worth it for the price.  Yes, it has some F/B to it, but would it be worth the money over the G5RV I am currently using on 10m?

John AF5CC

The gain is significantly higher than that. Modelling the one I have at 22ft in EZNEC shows a max gain of 11dBi. "Some" F/B should be at least 16dB. It will slaughter the G5RV.

[N8WWM]

Get a copy of the MoxGen software and make your own! Lotsa fun and not hard at all. That is what I have built for 6 and 10.

A lot of your signal is eaten up in the tuner with a G5RV. You should notice a change for the better right away.

[WB6BYU]

The Moxon is a 2-element yagi with a typical free-space gain of about 6dBi,
or close to 4dB over a dipole.  You can get more that from some other 2-element
designs, but they tend to be plagued with poor F/B and/or low feedpoint
impedance.

If they were claiming 3.3dB over a dipole, that probably is pretty accurate.

The G5RV will have multiple lobes on 10m:  the Moxon will be perhap slightly
better in those directions, and much better at filling in the nulls between them.
(If your G5RV is sloping then the Moxon will make even more of an improvement.)

A lot of your signal is eaten up in the tuner with a G5RV.
 

More likely loss in the coax rather than the tuner.  This can be 6dB or more on 10m,
as VK1OD shows here:  http://www.vk1od.net/antenna/G5RV/index.htm

[ONAIR]

I see that MFJ has come out with a 10 meter Moxon Rectangle antenna.  I like the price on it-$75 at R and L Electronics.  I like the size and weight, would fit nicely in my setup.  However, MFJ's ad says the gain is 3.3DBi.  That put it at .5 db gain over a dipole or something like that.  Is that really worth it for the price.  Yes, it has some F/B to it, but would it be worth the money over the G5RV I am currently using on 10m?

John AF5CC

The gain is significantly higher than that. Modelling the one I have at 22ft in EZNEC shows a max gain of 11dBi. "Some" F/B should be at least 16dB. It will slaughter the G5RV.

    Totally agree.  My 10 Meter Moxon significantly outperforms my G5RV.

[KD0TLI]

Do a search on google and build your own.  remember those old folding patio chairs with the plastic webbing.  Cut the 90 degree corners out of them and use  the appropriate sized aluminum tubes to build your own, a self tapping sheet metal screw at the joints will hold it all together. almost free if you get the lawn chairs at  goodwill or  garage sales.

Cool idea Tom !     I may have to give that a try.

[SM5JAB]

The Moxon acts like any old two-element beam. Its main virtue is its size and phenomenal F/B-ration. It is not magic, but does a good job. Don't get lured by the large F/B figures, often they are not as interesting as the forward gain (CONDX take care of the F/B). I have a home made one for 18 MHz, very decent.