I want to thank those of you who responded to my question. Several
recommended W7EL's EZNEC V3.0 program.
I looked at his demonstration program but was unable to use it properly to
fit my needs. I probably lack some software navigational ability.
I intend to put up a 100 - 120 foot tower with either two or three 10 meter
yagis. I have three Telrex 10 meter yagis in which I could use in a
stacked configuration vertically. Two of them are 5 elements each on 23 foot
booms and one has 10 elements on a 45 foot boom.
I would like to get the best configuration for not only dx but for long
distance ground wave. I thought that by mounting the longer boom yagi at the
top, with the smaller ones lower, that would be the best overall. However, I
would like to be able to see what the experts think is best with this.
Also, I have a nice 6 element 20 meter Telrex that I would like to see if it
is possible to mount it at the top of the tower with the long boom 10 meter
yagi about 8 feet or so above it. This would complicate matters, I suppose
but i am interested to see if it is possible for the tower to handle this.
I intend to use either a Rohn 45 or maybe 55 type tower, fully guyed. I
would probably have to use heavier and stronger guys at the top section than
recommended by Rohn. Don' t know how much to heavy-up.
I realize that I would need a matching system, perhaps from WX0B for the 10
meter system. Of course the 20 meter antenna would have its own separate
Since I want to get it right the first time, and not do alot of "maintenance"
or systems alternations later, I would appreciate the collective wisdom from
this fine group such as you all. What do you suggest?
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