I've got frequencies programmed as mototrbo sites and I get hits on a WSCM479 freq, not sure which.
I've seen TGs 98, 199 and 255, all encrypted.
Not even sure if it's for this system.
In the process of doing this I've found plane refueling activities at Dulles on a freq not licensed in Fairfax or Loudoun. Doesn't seem to fit in with known DMR systems.