Probably not going to be much, in the way up Public Safety that is. State on SC21, Springfield Police & Fire on 800mhz. C-MED (EMS) is on 155.22.
155.46 is old ISP operations channel at the fair.
Sangamon County Sheriff dispatch & car-to-car frequencies may also be in use. (VHF)
Finds from other years..
155.08500 158.86500 KQW359 RM 123.0 PL Fairground Ops: Receiving/Rest Room Cleaning/Trash FM Tag This!
464.90000 M Maintenance FM Tag This!
151.80500 M 100.0 PL unid - mobile ops (Ice Cream? 2006) FM Tag This!
151.83500 M unid ops @ fair - was ID'd as PL tone (2006) FM Tag This!
153.47000 M 71.9 PL Overhead Tram Ops ??? (2007) FM Tag This!
154.60000 M 67.0 PL unid ops (2006) FM Tag This!
460.40000 M 192.8 PL Springfield Police Explorers: Parking Ops (behind Grand Stand) FM Tag This!
461.30000 466.30000 WPGH607 RM 241.8 PL Tractor-Tram Ops (Pickett, Ernest of Pawnee) [Expired 5/05] (2006) FM Tag This!
461.52500 M 131.8 PL food vendor (ice cream, fudge, @ 2 locations: front gate, ?) (2005-7) FM Tag This!
462.55000 M 754 DPL unid vendor (2006) FM Tag This!
463.52500 468.52500 RM 203.5 PL unid - fair operations (maintenance?) (2006) FM Tag This!
464.17500 469.17500 RM Tuxhorn Towing (confirmed 8/06) (was 463 DPL? not valid tone) FM Tag This!
464.17500 469.17500 RM 263 DPL garbage company ? (2006) FM Tag This!
464.50000 M 67.0 PL unid - vendor (2007) FM Tag This!
464.55000 M 100.0 PL unid - casual talk FM Tag This!
467.81250 M 156.7 PL unid vendor (2006) (K-Dot) FM Tag This!
469.53750 M Food-o-rama Vendor ? (572 DPL?) FM Tag This!