So, what's the story with these repeaters? They can just pop up out of nowhere, so to speak?
There's nothing anywhere close to me on six meters (thanks for that link, Pipe), but there's a big microwave array not far from my field that is a magnet for every radio system in the public and private sector around here, since its on high ground and in a somewhat remote location. Everybody wants to put their antennas on it
My luck would see a 50 mhz repeater go up on it right after I got my ticket...