Yes, the LTR system is "active". They aren't using it like it is supposed to be but they are using it.you can go here for the freq and talk groups.
http://www.radioreference.com/apps/db/?sid=492
If you are referring to the Safe-T system, No one but New Chapel Fire company is using the system on a regular bases. New Albany Fire is getting ready to start using Safe-T very Soon from what I understand. part anolog and part digital.