A little further data, their subscriber units are reportedly programmed with site preference for the charleston simulcast site. So while they can access other sites, and you may occasionally may hear them on other sites, their units will affiliate with the charleston site unless they're so far out that the signal falls below the threshold for shifting to a non-preferred site. I would image they probably did this to minimize roaming fees and maximize their ability to communicate with each other even if a site were to drop into site trunking. It also makes some sense from constant coverage standpoint, as many subscriber units on pal800 jitter between the charleston site and the moncks corner site when near the north end of goose creek, and between charleston and summerville site on the west end of the city. Long story short, if you want to scan Goose Creek PD, you've got to scan the charleston simulcast site.