Originally Posted by ai8o
Is this a common FAA practice to put ground based XMTRs for the approach frequencies for an airport at a location off the grounds of the airport?
Yes, as most large TRACONs serve many airports outside of the primary airport. Here in Atlanta I can think of at least 6 remote transmitters for Atlanta TRACON.
Can't speak to the details on the one you speak of though as I don't know much about the CLT area.