"Alfred Lorona" wrote in message
...
Is there a site that explores/explains the latest theories on one way
propagation? The ARRL antenna book is not much help on the subject.

tnx, AL

One possible explanation is in my old CQ article at
http://www.k3bu.us/propagation.htm
Generally the opinions are that it is mainly due to the difference in local
noise levels at different ends of the path, but my experience made me
believe as I tried to explain in the article.

73 Yuri, K3BU.us