Most of these are listed by the FCC as a new NXDN trunk system for PPL I believe 2 different sites. The frequencies listed with a RAN do actually have comms, although they are few and far between.
Freq User Mode RAN
451.0875 PPL ELECTRIC NXDN
461.44375 PPL ELECTRIC NXDN 1
461.75625 PPL ELECTRIC NXDN
451.78125 PPL ELECTRIC NXDN
153.4775 PPL ELECTRIC NXDN 1
153.6575 PPL ELECTRIC NXDN 1
158.1375 PPL ELECTRIC NXDN
158.1975 PPL ELECTRIC NXDN
153.5375 PPL ELECTRIC NXDN
153.7025 PPL ELECTRIC NXDN
159.72 PPL ELECTRIC NXDN