I have one above a th-7 by 11',the only problem I have had was a resonant 
feedline length which was easily cured. Works gangbusters!
Scott
KA1CLX
At 09:48 AM 6/2/99 -0700, you wrote:
>
>
>I have heard that the "new" Cushcraft, 2 el 40M beam (XM240)  has
>substantial interaction with nearby 20 M, full size, elements.  I
>understand that the older 40-2CD doesn't exhibit this tendency!  Anyone
>have any practical experience with these antennas stacked 9 - 12 with a
>20 M beam?  Any info appreciated!
>
>73, Stew  K3ND, Trustee W3KLG 
>
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