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Here's a rewritten and improved version of the original content, formatted in a more natural, human-like style with additional context and clarity to meet the 500-character requirement:
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This is from Dave Weaver:
> **Chicago Fire Department UHF Radio Zone Channel Assignments**
The numbers in parentheses (1–16) represent the current channel numbers used by Chicago Fire and EMS units. Each radio is typically programmed with over 20 zones, and many channels are duplicated across different zones with varying numbering. The following are the two main zones currently in use by the Chicago Fire Department and EMS.
**Zone (FD):**
1. **FIREMAIN**: Used by Fire and Rescue companies in the North jurisdiction for communication with the OEMC.
2. **FIREENGL**: Used by Fire and Rescue companies in the South jurisdiction for communication with the OEMC.
3. **ADMIN**: For communication between Fire and Rescue units and ambulances. Can also serve as an alternate fireground channel during emergencies like a MAYDAY.
4. **FIREGRND**: For on-scene communication between Fire and Rescue units during incidents.
5. **FIRE CMD**: Used by chief officers to coordinate activities at large-scale or extra alarm incidents.
6. **EMS CMD**: Acts as the EMS tactical channel during major EMS operations.
7. **EMS OPS**: EMS companies operating at high-rise fires should use this channel under the direction of the ranking EMS Command Chief. It may also be designated as a tactical channel during large incidents.
8. **OPS 8**: May be assigned by the Incident Commander as a tactical channel for search and rescue, support, or as an alternate EMS channel. Also used as a backup fireground channel if another incident nearby requires it.
9. **OPS 9**: Similar to OPS 8, used for secondary incidents when FIREGRND is already in use.
10. **OPS 10**: Assigned by the Incident Commander for large-scale incidents. Used by chief officers to manage a second extra alarm if FIRE CMD is already occupied.
11. **CTA FIRE**: Used by personnel responding to incidents within CTA tunnels or subways.
12. **UMETRO 3**: An interoperable channel for communication with other city or county agencies. Can act as a backup for CTA-to-Fire communications during subway incidents.
13. **CW FIRE**: A backup dispatch channel used by OEMC during peak times.
14. **LAKEFRNT**: For communication with lifeguards at Chicago beaches.
15. **FIREENGL**: Same as above, used by South jurisdiction units.
16. **FIREMAIN**: Same as above, used by North jurisdiction units.
**Zone (EMS):**
1. **EMS MAIN**: Used by EMS units in the North jurisdiction for communication with OEMC.
2. **EMS ENGL**: Used by EMS units in the South jurisdiction for communication with OEMC.
3. **ADMIN**: Same purpose as in FD zone—communication between Fire and EMS, and as an alternate fireground channel.
4. **FIREGRND**: Same as in FD zone—on-scene communication.
5. **FIRE CMD**: Same as in FD zone—used by command staff.
6. **EMS CMD**: Tactical channel for EMS during major operations.
7. **EMS OPS**: Same as in FD zone—used during high-rise fires or large incidents.
8. **OPS 8**: Same as in FD zone—tactical or backup channel.
9. **OPS 9**: Same as in FD zone—used during secondary incidents.
10. **OPS 10**: Same as in FD zone—used for managing multiple large-scale incidents.
11. **CTA FIRE**: Same as above.
12. **CITY W5**: A special events channel monitored by OEMC, used by Chicago Police.
13. **CW FIRE**: Same as above—backup dispatch channel.
14. **LAKEFRNT**: Same as above—beach lifeguard communication.
15. **FIRE ENGL**: Same as above—used by South units.
16. **FIRE MAIN**: Same as above—used by North units.
These channels help ensure efficient and organized communication during emergencies, allowing for quick coordination between different units and agencies.
July 05, 2025