That is certainly a perfectly viable antenna and probably a fine choice
for your needs ... but it does not "far outperform" either a dipole or
especially a 2 element yagi at the same height. (although the yagi would
of course be unidirectional). 4.7 dbi is dipole territory. You could
have gotten pretty much the same result with an E-W 80m dipole and a N-S
40m dipole fed at the same point (orthogonal fan dipole). And assuming
you used capacitors for the EDZ, dipoles are easier to build.
73,
Dave AB7E
On 3/13/2020 11:19 AM, Lyn Norstad wrote:
Duane -
I am of the mind that the antenna is the most crucial part of any station,
and probably the most often maligned. I have made a number of presentations
to ham groups on the design and construction process involved in getting
the most bang for the buck, depending on your wants and needs (everybody's
are different).
In my own situation (2 acre semi-rural lot approx.150 feet x 600 feet
running E-W feet, and active HOA) the goal was to have a single antenna that
would provide the best primary signal on 80 meters in a North-South
direction, while providing the best possible signal on 40 meters in an
East-West direction, consistent with the 80 meter performance and without
unduly provoking the HOA (or my XYL).
I decided on an Extended Double Zepp, cut for 3.5 MHz. That resulted in a
length of 360 feet, which worked nicely since I have 400 feet clear from the
house (West end) to a perfect tree for the far East end. And another tree
in the center for support of both the antenna and the feedline.
I am feeding it with a 160 foot length of 600 ohm "true ladder line." I can
go into more detail if this sounds like something that would work. Modeling
this antenna with EZ NEC shows a maximum theoretical gain of 4.7 dbi in both
North and South directions. With the ladder line, a dual hybrid balun and
short length of coax into the shack, my KAT500 tunes it very nicely on all
bands 160 m thru 6m.
I don't have your call so can't see where you are, but would be happy to
make other suggestions based on the coverage you seek.
73
Lyn, W0LEN
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