FWIW - I used the F12 410/415 yagi at P40V alongside a C31XR and felt that the
duobander was superior to the C31 in that installation (roughly the same
heights on different towers but hardly a scientific comparison).
I was impressed with the 10/15 yagi and later modelled the 410/415 with YO for
the 15M section. It came out close to other commercial designs using 4 or 5
elements and 20-24 foot booms.
The 410/415 is a 30 foot boom yagi. Tom has two other 10/15 duobanders, one
smaller, one larger depending on what you can put up.
Gd luck,
Mark
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See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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