SSRF-Lite reference data

Cook County Sheriff

Systems · US / IL / Cook / Countywide · Public Safety · Updated 2026-10-01 · systems/US/IL/Cook/_Countywide/public_safety/cook_county_sheriff.yml

Public safety

Browse in the channel table View YAML on GitHub Download YAML

Channels

15 assignments, sorted by frequency. Frequency is what your radio receives; input is what it transmits on for repeaters.

Freq (MHz)	Mode	Tone / CC	Name	Usage	Callsign	Location	Service
153.8150	FM	CTCSS 173.8 Hz	Cook Shrf Jail 1	simplex	KZU879	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
153.8150	FM	CTCSS 107.2 Hz	Cook Shrf Tac12	simplex	KZU879	Cook County, IL (countywide)	Public safety
153.8450	FM	CTCSS 173.8 Hz	Cook Shrf Court	simplex	KQ6542	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
153.8450	FM	CTCSS 173.8 Hz	Cook Shrf Jail 3	simplex	KQ6542	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
153.8450	FM	CTCSS 107.2 Hz	Cook Shrf Tac 9	simplex	KQ6542	Cook County, IL (countywide)	Public safety
153.9050	FM	CTCSS 107.2 Hz	Cook Shrf C2C6	simplex	KL6889	Cook County, IL (countywide)	Public safety
154.0250	FM	CTCSS 173.8 Hz	Cook Shrf Jail 2	simplex	KZU879	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
154.0250	FM	CTCSS 173.8 Hz	Cook Shrf Tac11	simplex	KZU879	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
155.5350	P25	NAC $293	Cook Sheriff S	simplex	KSA717	Cook County, IL (countywide)	Public safety
155.5950	P25	NAC $293	Cook Sheriff N	simplex	KSA717	Cook County, IL (countywide)	Public safety
155.6400	P25	NAC $293	Cook Sheriff 64	repeater	KFM495	Cook County, IL (countywide)	Public safety
158.8650	FM	CTCSS 173.8 Hz	Cook Shrf Jail 4	simplex	KSA718	Cook County Corrections / Courts complex, 26th and California, Chicago	Public safety
158.8650	FM	CTCSS 107.2 Hz	Cook Shrf Tac14	simplex	KSA718	Cook County, IL (countywide)	Public safety
159.0900	FM	CTCSS 107.2 Hz	Cook Shrf Alt7	simplex	KSA718	Cook County, IL (countywide)	Public safety
159.0900	FM	CTCSS 173.8 Hz	Cook Shrf*Alt7	simplex	KQ6542	Cook County, IL (countywide)	Public safety

Sites

2 locations.

Cook County, IL (countywide)

41.8781, -87.6298

loc_cook_county

Cook County Corrections / Courts complex, 26th and California, Chicago

41.8420, -87.6950

loc_cook_doc

Organizations

Cook County Sheriff's Office

Callsigns: KFM495, KL6889, KQ6542, KSA717, KSA718, KZU879

org_cook_sheriff

Cook County Sheriff - Corrections and Courts

Callsigns: KQ6542, KSA718, KZU879

org_cook_doc

Authorization

What it takes to transmit on these channels.

Public safety

FCC · Class: Part 90 Public Safety

TX restricted to licensees. RX-only for general public.

Talkgroups & contacts

Name	Kind	ID	Notes
Cook Sheriff N	Group	25086	STARCOM21 P25 Phase II. Sheriff Patrol North; multicast with 155.595. Encrypted.
Cook Sheriff S	Group	25087	STARCOM21 P25 Phase II. Sheriff Patrol South; multicast with 155.535. Approx 99 percent encrypted.
Cook Highway N	Group	25049	STARCOM21 P25 Phase II. Cook County Highway North, 500-series sites. Encrypted.
Cook Highway S	Group	25050	STARCOM21 P25 Phase II. Cook County Highway South, 500-series sites. Encrypted.

Sources

Where this data came from. Verify on the air before relying on it.

RadioReference - Cook County, IL (Sheriff) · accessed 2026-09-26