You would need a wing dish for 61.5 if that's what Jackson, MS locals are on and would need to be in the spotbeam. I assume you have a 1000.2 antenna. They are on Transponder 1 Spotbeam 9. Unless you live in the area it is sort of impossible to say for sure whether you would be in the spotbeam without having a 61.5 antenna installed and looking at the signal strength for the transponder.
I really can't say for sure. I would think you might have a pretty good chance but the only way to know for sure would be to install another Dish 500 with Dual LNB and hook it up to your 1000.2 and test the signal strength for T1. If you have a Dish 500 sitting around you might point it at 61.5 and see. It wouldn't surprise me if you looked around you might see a neighbor with a 61.5 dish installed. (It'd be pointed to the SE.) See if they will allow you to check the SS on T1.