Sounds like it's just P25 (digital) on a conventional frequency, much like
Tx DPS is. BTW, their
license for that frequency does not show the correct code for digital usage, but I've seen others around the state that are ignoring that as well.
Just enter it as a conventional object. Then either set the "squelch mode" to NAC. or enter "Search" in the squelch mode field. Once you determine the correct NAC (the scanner will show it, and give you a chance to save it), then submit the frequency & NAC to the database via the Kleberg County page.
Note that if they are actually using MotoTRBO or NXDN (not licensed for those either), the scanner would not decode either of those modes.