It shows each station's stats, in the U.S. and Canada, power, antenna height, signal pattern, etc. It's similar to Radio-Locator, although Radio-Locator doesn't keep track of current info for Canadian stations, as this site does. It is something like FCC.com but that isn't the web address. I checked FCCinfo.com but that isn't it, either. I'm not sure who maintains it but this is not an official FCC government website.