If you're in Leesville as your profile indicates, Plum Branch may be a little too far out of range, depending on the antenna you're using. The Johnston site is your best bet.
Are you hearing any communication from the site? You don't indicate what radio you're using. Are you certain that you're able to hear the site at all?
If you're hearing any traffic from the site, and just not able to received SCHP Troop 2, keep in mind that SCHP uses a lot of patching of talkgroups. This means that, again depending on the radio you're using, you may not always hear SCHP traffic on the Edgefield/Saluda dispatch talkgroup. I'd program all 3 Troop 2 dispatch talkgroups and see if you can hear any of them. Chances are, they're all patched together and being worked by a single dispatcher.