Very interesting.
The grey line is like a hose.
The lines of propagation change with season and sunspot activity.
Magnetic fields shift, solar winds.
Lots of variables but all predictable
That current map would make it hard for me to hear Iraq.
And you thought guys were a bunch of dummies with only on thing on their mind ;)
Ever wonder how come you can pick up Chicago on your AM radio at night but not in the day?
Well its physics and the way God made everything, but there is a method and an understanding to all his creations.