To hear a P-25 system using an P-25 radio, the radio MUST affiliate with the system. Any UNATHORIZED radio affiliating on the system will be killed remotely. In other words, it will be made a paperweight with a few keypresses. On the older Type II systems you could get away with using an mobile or HT with TX disabled. Not on an P-25 system. So spending the $3,000.00 or more on an HT or mobile would be a waste. Spend the $100.00 to $500.00 on a digital scanner. Any model from the RS PRO-96/2096 up works fine on almost all the AWIN sites. For the few current 700 MHz sites you will need one of the models in the generation after the 96 series.
Admin for AR, IN, LA, MS, and TN
PRO-92, PRO-92B, PRO-96 x 2, BCD396XT, BCD436HP+DMR
HT-1250 LS+, APX6000XE