Bill wrote:
. Wet trees can also absorb radio waves better then dry
ones.

Trees have vascular systems so are "wet" all the time. Dry trees are
dead trees,

http://www.biology4kids.com/files/pl...lemphloem.html

You must live where it never freezes. The difference between summer
and winter on 2m and up is certainly noticeable and measurable here in
Minnesota.

tom
K0TAR