Don't break into a QSO unless you have emergency or priority traffic or something valuable to add to the conversation. Don't use the repeater to shoot the breeze with a local station. Use simplex when possible. If you do shoot the breeze with a distant station, be sure to leave room for people who also need the use of the repeater. Don't use excessive mike gain.
Distorted audio is very annoying.
The repeater has remote receivers in Evansville and Petersburg, IN, with plans for expansion. The 145.15 has an autopatch that serves the greater Evansville area. The transmitter is located just north of Vincennes. The receive site is a couple of miles east of Vincennes. The receive antenna is at 400 feet, and is shared with the 146.67 repeater.