At 12:34 PM 3/17/97 -0700, you wrote:
>Has anyone tried extending the boom of a Cushcraft 40-2cd. I have a
>boom from a KLM 3 ele 40, I think it is 20 ft vs 12 for the 40-2cd. I
>had a full sized 2 element 40 until mother nature found it! Too much to
Cushcraft used a Fortran based modeling system to get max gain from the
40-2CD. Altho this was 20 years ago its still hard to get more gain from a
2el on 40. Several have run models on the antenna and its seems to all
point to 23' as best for the reflector/driven el combo of the 40-2CD.
If you extend the boom (I have heard 38' and 41') and make it a 3el
array...but for only about 1.1DbD difference. Seems the best thing to do is
apply as many of the mechanical mods you can, stack a pair, or go to a full
size 3 el.
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