Another thing to consider when using the EDZ on higher bands (to get
multi-band perfomance) is that it will not do well if you have constructed
this as an inverted vee instead of a flat top. If you model the EDZ on
higher freq in an inverted vee configuration, you will see the predominance
of higher lobes (higher take-off-angle).

I ran a 20m EDZ for years and found that I had to make it a flat top for it
to perform best, even on the design band. On higher bands it was a disaster
in the inverted vee configuration. Some playing around with EZNEC showed me
why (3-D view). The gain was still there, but it was all in the wrong
direction (highly elevated).

Once I took care to go flat-top or to have very, very slight vee'ing, the
antenna worked wonderfully on 20m and decently on the bands above.

....hasan, N0AN
"Walter Maxwell" wrote in message
...
On Sun, 15 Jul 2007 15:53:48 GMT, "Amerigo Vespucci"
wrote:

snip
The way I understood it was the best way to feed it was with ladderline or
something equal to it. I looked at the wireman website and saw their 450
ohm
ladderline is only like 26 cents a foot so I'll order 80 feet of it and
send
the antenna up higher and take it from there. The reason I built the EDZ
is
it has 3 db over a dipole and it will also work for other bands with a
tuner.Another reason I made the EDZ is a real estate issue(lacking) so
something monsterous would be out of the question, but hey that's what
makes
ameteur radio such a great hobby,the experimentation that goes along with
it.

Hi Amerigo,

The transmission line you constucted should work just fine--don't go
buying any more line, because the
difference will be insignificant.

And another point you should be aware of is that the 3dB improvement using
the EDZ is only in the direction at
right angles to the antenna, because the broadside lobe of the EDZ is
somewhat narrower than that of the 1/2
wave dipole, and as a result, the gain in all other directions is LESS
than that of the 1/2 wave dipole.

Walt, W2DU