At 06:08 AM 6/23/1999 -0600, k6ll@juno.com wrote:
>Henry,
>
>You can download the program YTAD from the ARRL fileserver,
>or oak.oakland.edu, and it will help you answer all of these
>questions. You can superimpose plots of the stack right over
>the plot of just
>one yagi alone. It's a great tool for helping you to decide
>how to spend money on antenna improvements, both in flat and
>hilly terrain. It's also a lot of fun to play with.
>
>There is an updated version (YT?), that comes with recent
>editions of the ARRL Antenna Handbook.
If you do this, be sure to download the updated arrival angle tables from
the ARRL web page. The ones included with published versions of YTAD were
not as accurate as they should be, and N6BV posted replacements last year.
It's important to superimpose the arrival angle data over the stack
patterns in arriving at the best (compromise) spacing for the stack.
73, Pete N4ZR
Sometimes a tower is just a tower
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