Art Unwin wrote:
Thank you all for those points raised.

Moral is: There's no such thing as earth "ground"
at 50 feet in the air. There are only ground planes,
counterpoises, and other conductors that become part
of the antenna system. Even the ground wire on an
artificial ground device radiates.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com