My HP1 seems to be missing some local channels because they won't appear as a channel under a system, regardless of the type of service selected. For example, I'd like to monitor a nearby sheriff's department (Sharp County (Arkansas) Sheriff's Department, just 20 miles north of my location), but it doesn't appear as a channel under the Sharp County system, regardless of the type of service selected. I can pick up the frequency for Sharp County Sheriff's Department just fine on my Pro-96 but there is seemingly no way to pick it up on my HP1. Any suggestions?