Background info regarding the original question ...
The "north" site referred to the repeaters on the WDAV broadcast tower, in the north end of the county. This site used a different selection of frequencies from the other primary sites. The county is setting up another trunking site nearby, using the standard 28 frequencies (is it "live" yet?). The fate and future use of the WDAV site is questionable.
The "south" site sits near where Park Road crosses Fairview / Tyvola, in the Southpark area. This is a primary site ... the "standard" 28 frequencies.
The "west" site refers to a location off Wilkinson Blvd, past the airport. This has been a five-frequency site, used to provide fringe coverage to specific talkgroups in that end of the county.
The "east" site refers to a site just off Independence Blvd., on Sam Newell Road, near the Charlotte / Matthews border. It was a five-frequency site at one time, but was upgraded to 28 frequencies a couple of years ago.
Other sites for the trunked system:
Lake Wylie / The Red Fez Club ... on the N.C. side of the Buster Boyd Bridge, this is a five-frequency site.
The Government Center / Uptown ... this was a five-frequency low-power site at one time. It has been upgraded to the standard 28 frequencies.
The Water Treatment Plant on Brookshire Blvd ... I have never confirmed that this site was actually in use, although it is licensed for the standard 28 frequencies.
The Motorola Service Center on I-85 at Graham Street ... It's my understanding that this was intended to be a backup trunking site, but others have indicated that thi site is 24/7. This is a 28 frequency site. I believe the two towers at the facility - both taller than 550 feet - are the two tallest free-standing towers (unguyed) in N.C.
Besides the sites where repeaters for the trunked system are located, there may also be some sites that are receive-only.
Jeff Multer
Fort Mill, S.C.