A great tool for DXing, this handy website will calculate any distance between
two cities around the USA and around the world, and shows the distance as-the-crow-flies,
the same way signals propagate.
Another great tool for DXing, you can use this website to find out what stations
come in at any location in the USA by city and/or state name, up to 100 miles
away from the location.
This is the great DX website of Girard Westburg of Lexington, KY. On his website
is a plethora of DX information, including his own DX logs and pictures he has
taken of TV DX entering his home.
This is a great DX website. Here you can read people's reports of DX from all
around the world.
This is the best website for Tropo DXing, because it actually shows you how good
tropo DX will be for you where you live via a map.