"Robert Casey" wrote in message
...
KØHB wrote:


Only when the mirror is equidistant between us and when it is "flat" will
the path be symmetrical and relative signal strengths reciprocal.



Somehow I would have thought that light (radio waves) could travel
either direction
on the same exact path. And that attenuation either way would be
identical.
Same for the same set of multiple paths.

But it's been years since Physics class......






The ionosphere is not like a mirror, as Hans stated. And from what I
understand the waves don't actually bounce, but they are bent back towards
earth.

Dan/W4NTI