"Roy Lewallen" wrote
A head-on reflection to a flat surface results in the polarization sense
reversal you mention. But reflection at a shallow angle doesn't. (etc)
__________

Thanks for the reply. I was recalling the experimental results that RCA
gathered in fixed and mobile tests in the Chicago loop when Ch 7 (ABC)
installed an RCA c-pol transmit antenna on Sears Tower there in the 1970s.
The ghost-reduction for same-sense c-pol tx and rx antennas was clearly
evident, and quite remarkable.

The link below leads to a scan of several graphs showing why this was true
for those near-in tests. RCA published a paper about it, which I will try
to find and provide a link.

http://i62.photobucket.com/albums/h8...eflections.jpg

RF