Richard Harrison wrote:
Obviously, where vectors are in-phase they add and where they are
out-of-phase they subtract.

In fact, Jim Kelley's assertion that there is no interaction
between waves would result in isotropic radiation in the
far field of every antenna if one went out far enough to
measure the waves after they are propagating free of each
other. I wonder if NASA knows that?
--
73, Cecil http://www.w5dxp.com