This from Dave Weaver:
Chicago FD UHF Radio Zone Channel Names/Assignments
The numbers in parenthesis (1-16) are the channel numbers now in use by the Chicago FD Fire and EMS crews. Each of their radios are programmed with over 20 Zones, most carrying duplicate channels with numbering that may be different. These are the 2 primary Zones in use by Chicago Fire and EMS.
Zone (FD):
(1) FIREMAIN: Used by FS&R companies i
n the North jurisdiction for communications with the OEMC.(2) FIREENGL: Used by FS&R companies in the South jurisdiction for communications with the OEMC.(3) ADMIN: For communications between FS&R companies and ambulances. Used as alternate Fireground channel if a MAYDAY is requested.
(4)FIREGRND: For FS&R communications at the scene of an incident.
(5) FIRE CMD: Used by Chief Officers to coordinate activities at the scene of an extra alarm or other large-scale incident.
(6) EMS CMD: Used as the EMS tactical channel during EMS Plan incidents.
(7) EMS OPS: Under the direction of the ranking EMS Command Chief, EMS companies shall utilize the EMS OPS channel for communications when operating at a high-rise fire. May be designated by the EMS Command Chief as a EMS tactical
channel at a large incident.(8) OPS 8: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, alternate EMS tactical channel, etc.). Used as an alternate Fireground channel at a second incident, if a MAYDAY is requested at an incident in close proximity.
(9) OPS 9: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, alternate EMS tactical channel, etc.). For FS&R communications at the scene of a second incident if an incident in close proximity is already using FIREGRND.
(10) OPS 10: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, , alternate EMS tactical channel, etc.). Used by Chief Officers to coordinate activities at the scene of a second extra alarm or large-scale incident if another extra alarm or large-scale incident is already using FIRE CMD.
(11) CTA FIRE: Used by Department units/members working on the scene of an incident within the Chicago Transit Authority (CTA) tunnel/subway.
(12) UMETRO 3: Interoperable channel to communicate with other city/county agencies. With permission from the Incident Commander, can be used as a backup channel for CTA to FS&R communication at the scene of a CTA subway incident.
(13) CW FIRE: Alternate dispatch channel used by the OEMC during high-volume periods.
(14) LAKEFRNT: Used to communicate with Chicago Park District lifeguards on the beaches.
(15) FIREENGL: Used by FS&R companies in the South jurisdiction for communications with the OEMC.
(16) FIREMAIN: Used by FS&R companies in the North jurisdiction for communications with the OEMC.
Zone (EMS):
(1) EMS MAIN: Used by EMS companies in the North jurisdiction for communications with the OEMC.
(2) EMS ENGL: Used by EMS companies in the South jurisdiction for communications with the OEMC.
(3) ADMIN: For communications between FS&R companies and ambulances. Used as alternate Fireground channel if a MAYDAY is requested.
(4) FIREGRND: For FS&R communications at the scene of an incident.
(5) FIRE CMD: Used by Chief Officers to coordinate activities at the scene of an extra alarm or other large-scale incident.
(6) EMS CMD: Used as the EMS tactical channel during EMS Plan incidents.
(7) EMS OPS: Under the direction of the ranking EMS Command Chief, EMS companies shall utilize the EMS OPS channel for communications when operating at a high-rise fire. May be designated by the EMS Command Chief as a EMS tactical
channel at a large incident.(8) OPS 8: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, alternate EMS tactical channel, etc.). Used as an alternate Fireground channel at a second incident, if a MAYDAY is requested at an incident in close proximity.
(9) OPS 9: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, alternate EMS tactical channel, etc.). For FS&R communications at the scene of a second incident if an incident in close proximity is already using FIREGRND.
(10) OPS 10: May be designated by the Incident Commander as a tactical channel at a large incident (Search and rescue, support, alternate EMS tactical channel, etc.). Used by Chief Officers to coordinate activities at the scene of a second extra alarm or large-scale incident if another extra alarm or large-scale incident is already using FIRE CMD.
(11) CTA FIRE: Used by Department units/members working on the scene of an incident within the Chicago Transit Authority (CTA) tunnel/subway.
(12) CITY W5: Used by Chicago Police as a Special Events Channel monitored by OEMC.
(13) CW FIRE: Alternate dispatch channel used by the OEMC during high-volume periods.
(14) LAKEFRNT: Used to communicate with Chicago Park District lifeguards on the beaches.
(15) FIRE ENGL: Used by FS&R companies in the South jurisdiction for communications with the OEMC.
(16) FIRE MAIN: Used by FS&R companies in the North jurisdiction for communications with the OEMC.