LCSO uses an 8 frequency EDACS trunked system. It is a bit more complicated than entering a single frequency. You need to program a trunking scanner (Uniden, RadioShack or GRE) with all 8 freqs in the proper order in the proper way.
We would need to know what model scanner you have and from that we can tell you if it is capable of actually following the system or not.
If you want to attend the next CARMA Meeting (Saturday, March 3 in Willowbrook) one of us will program your scanner for you as long as it is capable of the type of system. Otherwise send me a PM (Private Message) and I will see if we have someone in your area that can meet up with you and help program the scanner. A bunch of us live here in Lake County.