I believe Franklin Co and Frankfort PD are using NXDN. Many folks take this to mean "encrypted" but in and of itself, NXDN is merely a form of digital signal. At best only the latest Whistler scanners are reported as NXDN capabile and no Uniden thus far are capable of decoding NXDN.
With that said, I'm sure that NXDN can also be encrypted - as in "scrambling" the 0's and 1's of a digital signal.
Whenever I pass through this area and am scanning the full database on my Uniden scanner, I hear noise that isn't pleasant to listen to.