That beartracker function only let's you set highway patrol or police. It only has generic frequencies for each state and not area systems. Turn that function off, download freescan, and either get a RR membership and download what you need to the radio, or enter it into the software.
The software itself is free and supports that radio.
Need to watch though, as the 15x is not a digital capable radio so only analog systems and frequencies can be programmed.
Mark
WS1095/536/436/996P2/HP1e/HP2e/996XT/325P2/396XT/PRO668/PSR800/PRO652