Was monitoring Rosemont at work yesterday they were on frequency 476.6750 with pl tone of 023 DPL. Remember your in and out of this town, kind of like Mayberry they do sit around alot, probably why many traffic stops with tickets. Radio traffic was very quiet at times.
So far word is Rosemont will not be going the consolidated dispatch center way anytime soon. As it is a mini Vegas without the Casinos but with all the Hotels and Convention center's. Don't expect any big changes anytime soon.