Been studying the the Cecil RID's captured using DSD+ & SDS100.
Here are some general conclusions. Radio numbers are estimations..
2340xxx Cecil County Medics (200 Radios)
2341xxx Cecilton FD (50 Radios)
2342xxx Chesapeake City FD (100 Radios)
2343xxx Singerly FD (Elkton) (200 Radios)
2344xxx North East FD (100 Radios)
2345xxx Charlestown FD (50 Radios)
2346xxx Perryville FD (100 Radios)
2347xxx Port Deposit FD (Waterwitch) (150 Radios)
2348xxx Rising Sun FD (150 Radios)
2349xxx Hacks Point FD (60 Radios)
2351xxx Sheriff Department (200 Radios)
2352xxx Elkton PD (50 Radios)
2353xxx Towns PD (50 Radios)
2354xxx City/County Local Government/PW (100 Radios)
2356001-099 Roads Department (50 Radios)
2356101-110 Schools? (10 Radios)
2356301-367 Landfill? (30 Radios)
2357001-099 Health Department (20 Radios)
2357101-120 Transit Department? (20 Radios)
2359xxx Cecil DES (100 Radios)
For some reason most RID's seen so far end in an odd number.. Maybe portables??