Why doest the FCC "require" certain AM stations to go off the air at sunset?
There's an AM talk station in Knoxville that seems to to now carry the Hugh Hewitt Show (WETR AM 760). James Lileks occasionally makes guest appearances on his show, and I'd like to hear him sometime. But a number of times the guy comes on about 6:15 and says, "Due to FCC Regulations, we must now close our broadcast day. Goodbye."