Here are the CSU listings but there is no Fullerton in the database. It's one of the few police channels that's not encrypted in Orange county; so somebody local ought to know what frequencies are the campus police, fire, etc...
I don't have the freq off the top of my head but the PD is on 800MHz conventional. They have the option of analog, P25, and P25 coded DES-XL. I know that the PD on the campus does use encryption but it's selectable both on the console and radios, unlike the County where it's strapped.
I see if I can locate the freq, for some reason 868.575 or close to that rings a bell, its a CA DGS freq. A few others here..Mick??? might have the right freq. Related to CSUF, the PD/CSO's at the old El Toro base were using one of the CMARS 800 channels to talk back to dispatch. I don't know if that's still the case or not.
California State University, Fullerton Police Department
800 N. State College Blvd.
Fullerton CA 92834
WPNT421 868.575 P25 (full-time encryption) PD
WPLU565 866.5375 114.8 PD, El Toro campus
KRG679 153.740 100.0/input is 151.205 100.0 CSO’s
WPUZ243 151.745 100.0/input is 159.495 100.0 Engineering
WQIY920 154.4825 100.0/input is 159.9975 100.0 Custodians