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US > Illinois > Cook (County) > Chicago Office of Emergency Management and Communications

Chicago Office of Emergency Management and Communications

This system is deprecated, and may no longer be in use or is superseded by another system.

System Name:Chicago Office of Emergency Management and Communications
Location:Chicago, IL
System Type:Motorola Type II Smartnet
System Voice:Analog
Last Updated:March 31, 2017, 10:29 am (General text description updated)

Important Rebanded Note

One or more sites for this trunking system have gone through the 800 MHz rebanding process. Your scanner may be incompatible, require a firmware update or require special programming to track these sites. Please visit the RR Wiki Rebanding page for additional information.

System ID List

System ID   Connect Tone  
3d10   83.72

Latest News Update Posted on 2005-06-15 06:54:59

Old CHA Talkgroups (deleted now)

DEC HEX Mode Description
48 003 A CHA-WIDE
1648 067 A Dispatch
1712 06b A TAC 1
1744 06d A TAC 2
1776 06f A TAC 3
6448 193 A A-1 Maint
6480 195 A B-1 Maint
6512 197 A Maint CTC
9696 25e A TAC 4
12880 325 A Sweep
14448 387 A Central Dispatch
17648 44f A IAD
19248 4b3 A Step-Up
41216 a10 A Surveillance
17824 45a A Storm STORM
17856 45c A Storm1 STORM 1
17888 45e A Storm2 STORM 2
3248 0cb A DISP (Storm Dispatch)

Misc System Information

Former CHA Trunked System is now used by Chicago Office of Emergency Management and Communications (OEMC)

System P25 site NAC is 102.

March 2017 -  System appears to be offline I have not heard  active control channel for this system rebanded or otherwise for over a year. I believe the system is depreciated.


System Frequencies
Red (c) are primary control channels | Blue (a) are alternate control channels | Site Map(s): FCC Callsigns RR Locations

001 (1) Primary866.050c 867.350c 867.675c 868.050c 868.6375 866.650 868.1625
101 (65) Rebanded851.050 851.650 852.350 852.675 853.050 853.1625 853.6375

System Talkgroups
List All in one table     Show New Talkgroups

Office of Emergency Management Talkgroups

DEC HEX Mode  Alpha TagDescriptionTag  
32 002 A Radio Techs Radio Techs  Business 
64 004 A Field Ops Field Ops  Emergency Ops 
128 008 A Fire AlarmMt Fire Alarm Maintenance (from CPD Tac System)  Emergency Ops 
784 031 A Alt 1 Alt 1  Emergency Ops 
800 032 A OEMC Units OEMC Units  Emergency Ops 
832 034 A Net 1 Net 1  Emergency Ops 
1280 050 A Alt 2 Alt 2  Emergency Ops 

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