though that is correct, you should include a 4 control channels that do change every 12 hours:
856.0125
855.5125
854.5125
853.5125
I am not sure why they still have the old data still in the system. The two systems merged together several years ago, and the new one is the ony one active. Wayne County Sheriff wants to switch to the MPSCS system, however no towers have be built and no agreement has been reached by them with Motorola. The game is called Wait and See.
For now they the Sheriff's department and the Airport Police will continue to use their type II Motorola system, they will eventually have to switch but who knows how long.