Due to technical issues with their UHF T-Band conventional frequencies, fire suppression and EMS units will be using talkgroups on the OEMC 800 MHz trunked system (see below) for primary dispatch operations until at least early 2024.  The UHF T-Band conventional dispatch repeater channels will serve as alternates. (09/23)

154.220 -  VHF Admin simplex and extra alarm / incident notification [call-out] (notifications from OEMC on all extra alarms, EMS plans and other major incidents)

Chicago Fire Department
Chicago is divided into 2 dispatch areas:  Main (North) and Englewood (South).  The south branch of the Chicago River / Sanitary Ship Canal (which runs just north of I-55 / Stevenson Expressway) is the dividing line.   North of the canal – Main, south of the canal - Englewood.