From my location (Chelsea) Concord FD signal strength seems to be about the same, audio level may be a little lower since they narrow banded a while back.
I got Concord FD at 3 bars out of 5 bars today. Their audio seemed to be a little soft. Concord PD seems to be OK also. They might have more than 1 repeater site. I think that 1 site is up on that hill - cant remember the name. The other site might be at HQ.