We heard a Fresno, California AM radio station in Yahats, Oregon in
the evening, probably 500 miles away. I used to listen to an AM
station in Salt Lake, Utah when I was in the San Francisco, California
area at night.

On Tue, 14 Sep 2004 20:09:25 GMT, Ron Hardin
wrote:

I have a highway a half mile away that I hear at night but not in
the day; in the day, the ground is warmer than the air, and that
anti-ducts the sound, sending horizontal sound upwards over my head.