AFIK, the radios they are talking about are mostly the ones that were purchased when they went to the ESK on the EDACS system. Most of them are capable of being flashed & firmware upgraded to P25. I think the whole infrastructure is all GE, Ma/Com, Harris, But I am sure someone will chime in with the whole skinny--
Some of the coverage issues could be from using 2 sites now and also as going digital usually causes some issues with the users-especially Fire-persons. I don't listen to it much, but it sounds pretty good to me as compared to DTRS