This week I'm road tripping in the Columbia and Sumter, SC area and have discovered that the Shaw AFB TRS is actually part of the USAF 57C system. Here's what I have so far for the System/Site information; after the road trip, I'll submit it to the database along with some talkgroup information, as the talkgroups have changed as well.
SysID: 57C
Site ID: 1-89
NAC: 579
163.4125 CC
163.5125
165.0125
165.1875
165.2250
166.0000
166.1250
166.2250
SysID: 57C
Site ID: 1-89
NAC: 579
163.4125 CC
163.5125
165.0125
165.1875
165.2250
166.0000
166.1250
166.2250