I downloaded from rr trunking frequencies using arc500 They are in LTR standard form so I think I should be able to listen to them but I don't hear anything. Here are the screenshots.
The MRS system hasn't been updated in 12 years, I'd bet it's either gone or changed to a different format (DMR/NXDN). Same for the other probably as it hasn't been updated in 8 years.
They had UPMC shuttles on hear for years. Mobile Radio Service was sold a few years ago. I can't rember who bought it. I want to say Lauttamus or the Person affiliated with Lauttamus. Cant check contact person on license right now.