I think it depends on what kind of antenna system your running. If an outside antenna, the signal will be more solid, and you can run a slightly tighter squelch. I generally run a 2 bar setting. If you are in a rural setting, and signals are lower, you might try a lower setting.
You really have to experiment. Remember the old adage we use in ham radio: Antennas are the most important part.
You can have a really good radio, poor antenna, and the radio will only function at reduced performance. I've used average radios
with good outside antennas, and heard a lot of quality signals. I've noticed the Home Patrol is a pretty hot receiver, so give it a
quality antenna system. Don't believe all the "hype" about indoor, set-mounted antennas. DUKE, WB(OJD