The 245XLT is analog only so, as someone said earlier, you won't be picking up anything P25 (digital).
You can, however, pick up anything that is conventional (FM, FMN) listed in the RRDB:
Pinal County, Arizona (AZ) Scanner Frequencies and Radio Frequency Reference
You also might have some luck with some of the trunked systems listed at the bottom of the above page. You could try anything that has a TYPE of: Motorola Type II SmartZone but you will only hear the analog talkgroups. You might not hear ANYTHING, depending on if/how the system might have been rebanded after the scanner was released.
To sum it up, the 245xlt is technology from the 90s. While it isn't exactly obsolete, it is very limited as to what you are going to be able to hear in 2016.