I found this a few days ago...so far no problems:
http://www.fccinfo.com/fccinfo_google_earth.php
shows exact locations of transmitter sites...and is very customizeable...
even lets you sort by channel/frequency
http://www.fccinfo.com/fccinfo_google_earth.php
shows exact locations of transmitter sites...and is very customizeable...
even lets you sort by channel/frequency