The Palmetto 800 P25, For COUNTY traffic, the Charleston County COUNTY Simulcast site 110. For STATE traffic, the Charleston County STATE Simulcast site 109.
Also for local traffic: Site 111, 112, and 113.
All for this system:
https://www.radioreference.com/apps/db/?sid=5042
As the main sites are SIMULCAST be ready for multipath distortion.
On the TG note: We only have a couple of the CPD TGs found, there are still a lot more to be found. CFD mainly only uses the TRS for dispatch and interop with other agencies and uses the conventional Firegrounds unless things have changed recently.
I highly recommend using ProScan, or FreeSCAN to program the system so you do not make mistakes.
I do not know if the old City TRS is still online or not, and if it is, what would still be carried on it.
https://www.radioreference.com/apps/db/?sid=498