www.lazygranch.com/google_earth/comm.kmz

I'm not so sure about the area around "X".  I'll check it out live on
my next trip. The USGS says there is a substation in the area.

Most coordinates are from the FCC database unless they were more than
a 1/10th of a mile from Google Earth. As you know, Google Earth is not
very accurate, but often the coordinates in  the FCC database aren't
so good either.

Omissions/corrections welcome. Well, at least I'll look at them.