You can find more reading on LDE's at URL:

http://ac6v.com/propagation.htm#LDE
--
The Anon Keyboard
I doubt, therefore I might be



"M. J. Powell" wrote in message
...

I heard my own signals returned as a LDE sometime in the50's shortly after
I was licenced. I was on 20m late at night and sent out a standard 3x3 CQ.
When I went to receive I heard the last part of my CQ coming back with a
very ghostly tone "....CQ de GW3IJE GW3IJE GW3IJE AR K". Just like aurora
which I didn't hear until many years later.

Mike
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M.J.Powell