Going to be staying near Midway for a night. Any pointers or tips about scanning in the area? I got CPD and FD pretty much figured out. The surrounding towns seem a bit confusing at least the way they're displayed in the RR database with all the consolidated dispatch centers. Are there any buff frequencies out there? Also what would be the best site to use for the Starcom21 system? Can I just use one site to hear everything in the greater Chicago area?