Moxon Antenna Question

[JKC]

Hi all on the list. Just wondering if anyone can add to my insight on
the moxon antenna.

I would like to build a duel band moxon antenna (2m/70cm) antenna on a
single boom and I'm wondering if that is possible. If it is, can I
mount the 70cm rectangle inside of the 2m one (to save space) or does
one antenna have to be in front of the other.

Any help would be greatly appreciated. Also since I'm not to familiar
with this antenna, can someone correct me if I'm wrong but I take it
that the part of the antenna that has the feedpoint is the frontend.

Thanks in advance and 73.

John VE7JRX

[Ralph Parker]

>I would like to build a duel band moxon antenna (2m/70cm)...

Don't do that - they'll fight!

[WB7RSG]

There are a lot of articles on the web about Moxon antennas, some
study time is probably called for...... A quick Google search for
"Moxon Antenna" yields fifty six thousand hits, starting with...

http://www.moxonantennaproject.com/

and followed by a bunch more.


I think you'll find that a 144 MHz, 2 or 3 element Yagi is easier to
deal with, and performs better than the Moxon, unless you have a space
constraint that the Moxon fills. At UHF, you could add more elements,
if you have enough space for a 2 meter antenna. As compact antennas
go, the Moxon is a great candidate for the upper half of the HF bands
and 6 meters, but I think for 2 meters and up the Yagi designs are
easier to deal with, usually...... as always, opinions will vary, and
arguments will rage ;-)

"Elk Antennas" builds an interesting variation on the log periodic
dipole array that takes advantage of the fact that 432 MHz is close to
three times 144 MHz, but it's 125 bucks..... it might be fun to spend
some time improving it and making a home built recipe..

http://www.elkantennas.com/2m4405element.htm

W4RNL had very insightful and instructional things to say about Moxon
antennas..... and antennas in general. Before he died, it was very
easy to see his long list of articles at his web site, for free. It
looks like his article collection is now locked up, and costs money. I
never knew or even met W4RNL, but I did enjoy his work..... I'd be
very proud if somebody said that about me when I'm gone.

Here is a link to W4RNL's web site.

http://www.cebik.com/

You may be able to figure out how to get at his article collection for
free, or maybe not, I couldn't

Cebik had a great article on variations on 2 element compact antenna
designs, like the Moxon, hex and a few others...... if you can find a
copy of his articles, they are worth the time to read them.

It's interesting that the articles were free when Cebik was alive, and
now somebody that didn't write them wants money for them....... Aren't
copyright laws great!

73 DE WB7RSG

Greg.

[Mark Kaehler]

John-
If you have access to the August 2001 QST there is a article by Cebik on dual moxons on a turnstile (page 38).
73,
Mark, KF7DPK