Gene Fuller wrote:

Yuri,

I am a bit puzzled by your comment. Ducting and refraction received a
lot of technical and mathematical study back at least to the mid-1930's.
Terman's books show similar figures to those in your CQ article, and
they give numerous technical references from the 1940's.

You may have been ridiculed by the amateur radio community, but the pros
accepted that sort of propagation explanation many decades earlier.

73,
Gene
W4SZ

Gene, anyone who has been here a while has learned that Yuri knows all,
and has discovered all, well except for that other guy. How could you
possibly say otherwise?

tom
K0TAR