Federal Agencies (Cook County) Scanner Frequencies and Radio Frequency Reference

Federal Agencies (Cook County)

Last Updated: January 25, 2024, 7:16 pm

See National Interoperability (United States) for Federal Interoperability frequencies.

Frequencies

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Departments

Alcohol, Tobacco, Firearms and Explosives

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
164.2375	RM	650 NAC	BATFE Wire 1	Surveillance/Wire 1	P25	Law Tac
165.2875	B	650 NAC	BATFE Base	Chicago Base	P25	Law Tac
165.5125	RM		BATFE Surv	Surveillance	FM	Law Tac
165.9125	RM	650 NAC	BATFE Tac 5	Tac 5	P25	Law Tac
166.2875	M		BATFE Surv	Surveillance	FM	Law Tac
166.5375	RM		BATFE Chgo	Chicago	FM	Law Tac
166.5375	RM		BATFE Chgo	Chicago	FM	Law Tac
166.850	RM		BATFE Tac	reported Tac channel	FM	Law Tac
166.925	RM		BATFE CP	Mobile Command Post(?)	FM	Law Tac
167.1625	RM	650 NAC	BATFE Tac 1	Tac 1	P25	Law Tac
168.000	RM	CSQ	BATFE Surv	Surveillance	FM	Law Tac
168.350	RM	650 NAC	BTAFE Tac 4	Tac 4	P25	Law Tac
170.8875	RM	650 NAC	BATFE Wire2	Surveillance/Wire 2	P25	Law Tac
170.9625	RM	650 NAC	BATFE Tac 2	Tac 2	P25	Law Tac
172.4875	RM	650 NAC	BATFE Wire 3	Surveillance/Wire 3	P25	Law Tac
173.0125	RM	650 NAC	BATFE Tac 3	Tac 3	P25	Law Tac
173.8875	RM	650 NAC	BATFE Tac 6	Tac 6	P25	Law Tac
409.375	RM		BATFE CPD TF	Task Force w/CPD	FM	Law Tac
418.650	RM		BATFE Tac	UHF Tac simplex	FM	Law Tac

Customs and Border Patrol

STARCOM21 Statewide Illinois
Project 25 Phase II

Some Homeland Security/Border Patrol/ICE operations

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
136.375	M		CBP A/A	Air-to-Air	AM	Law Tac
162.0625	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
162.3125	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
162.825	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
163.475	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
163.750	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
163.775	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
165.850	BM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
168.0875	RM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
172.3625	BM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
172.6625	BM	C02 NAC	CBP O'Hare	O'Hare Airport	P25	Law Tac
172.8625	RM	C02 NAC	CBP Ohare 14	O'Hare Airport - Ops (Ch 14)	P25	Law Tac
172.9625	BM	C02 NAC	CBP O'Hare	O'Hare (repeater input?)	P25	Law Tac
162.900	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
163.3125	RM	C02 NAC	CBP Invstgn	Investigations	P25	Law Tac
163.500	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
163.675	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
163.725	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
164.7375	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
164.975	RM	C02 NAC	CBP Invstgtn	Investigations	P25	Law Tac
162.950	M	C02 NAC	CBP Tac 1	Tac 1	P25	Law Tac
163.125	M	301 NAC	CBP: Tac 7	Tac 7	P25	Law Tac
165.2375	RM	301 NAC	CBP DNET 1	DNET 1	P25	Law Tac
165.4375	RM	301 NAC	CBP 1654375	Ops	P25	Law Tac
165.7625	RM	301 NAC	CBP 1657625	Ops	P25	Law Tac
166.5875	RM	301 NAC	CBP 1665876	Ops	P25	Law Tac
168.8375	M	293 NAC	CBP Air 1	Air 1	P25	Law Tac
168.9625	M	293 NAC	CBP Air 2	Air 2	P25	Law Tac
169.1625	M	293 NAC	CBP Air 4	Air 4	P25	Law Tac
169.2625	M	293 NAC	CBP Air 3	Air 3	P25	Law Tac
169.3875	M	293 NAC	CBP Air 5	Air 5	P25	Law Tac
170.9625	M	650 NAC	CBP Tac 2	Tac 2	P25	Law Tac

Drug Enforcement Administration

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
169.575	RM	156 NAC	DEA 169.575	Operations	P25E	Law Tac
170.375	RM	156 NAC	DEA 170.375	Operations	P25E	Law Tac
170.5625	RM	156 NAC	DEA 1705625	Operations	P25E	Law Tac
170.650	RM	156 NAC	DEA 170.650	Operations	P25E	Law Tac
170.6625	RM	156 NAC	DEA 1706625	Operations	P25E	Law Tac
173.8625	RM	156 NAC	DEA 1738625	Operations	P25E	Law Tac
171.450	M		DEA Chi Mic1	Wireless Microphones	FM	Law Tac
171.600	M		DEA Chi Mic2	Wireless Microphones	FM	Law Tac
172.000	M		DEA Chi Mic3	Wireless Microphones	FM	Law Tac
172.200	M		DEA Chi Mic4	Wireless Microphones	FM	Law Tac

Federal Aviation Administration

Also see O'Hare Airport

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
162.3125	RM		FAA 1623125	Operations	P25	Federal
163.475	B	C02 NAC	ICE 163.475	ICE: Simulcast with 163.7500 ICE (Ch 13)	P25	Law Tac
163.500	RM		FAA 163.5	Operations	P25	Federal
164.100	RM	100.0 PL	ICE 164.1	OHare USCS/ICE (US Customs F20	FMN	Federal
165.6125	RM		FAA 1656125	OHare	FMN	Federal
165.7125	BM	136.5 PL	FAA 1657125	OHare	FMN	Federal
166.175	RM	136.5 PL	FAA 166.175	Maintenance [Simplex F-11]	FMN	Federal
167.0125	RM	001 NAC	FAA 167.0125	Operations	P25	Federal
169.1625	RM	136.5 PL	FAA 169.1625	Operations (inversion scrambling)	FMN	Federal
171.9625	RM	C02 NAC	FAA 171.9625	Operations	P25	Federal
172.125	M		NARACS F-8	NARACS simplex [F-8]	FMN	Federal
172.150	M		NARACS F-9	NARACS simplex / OHare runway lighting control tones [F-9]	FMN	Federal
172.150	RM	131.8 PL	FAA 172.15	Operations (inversion scrambling)	FMN	Federal
172.175	RM		FAA OhareF-4	Chicago OHare 4Z/4B/5A	FMN	Federal
172.175	M	CSQ	NARACS F-10	NARACS simplex channel 10	FMN	Federal
172.850	RM	136.5 PL	NARACS F-4	Chicago/NARACS Repeat and Simplex W/169.250 input F4	FMN	Federal
172.875	RM		NARACS F-5	NARACS	FMN	Federal
172.900	RM		NARACS F-6	NARACS	FMN	Federal
172.900	RM		FAA TSA F-6	OHare TSA Security P25 (3A officers on input?)	P25	Federal
172.900	RM	136.5 PL	FAA 172.9	Chicago	FMN	Federal
172.925	RM	136.5 PL	FAA NARACF-1	O'Hare/NARACS Chicago Repeat and Simplex W/169.325 input / Chgo	FMN	Federal
172.950	RM	136.5 PL	FAA NARACF-2	Chicago/OHare/NARACS Repeat and Simplex W/169.350 input / Chgo	FMN	Federal
172.975	RM	136.5 PL	FAA NARACF-3	Chicago/NARACS Ops W/169.375 input / Ohare runway lighting	FMN	Federal
173.205	F		OHare Data1	Data OHare City Telemetry	Telm	Data
173.210	F		OHare Data2	Data OHare City Telemetry	Telm	Data
173.2375	F		DuP Air Data	Data DuPage County Airport telemetry	Telm	Data
173.390	F		OHare Data3	Data OHare City Telemetry	Telm	Data
173.965	F		OHare Data4	Data OHare City Telemetry	Telm	Data
407.150	F	CSQ	OH 407.15	Transportation Network - possibly USAF	FMN	Federal
413.600	F		OH Windshr	Windshear Detectors (Data)	Telm	Data

Federal Bureau of Investigations

See wiki page for additional information.

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
167.5625	M	167 NAC	FBI Chi N/W	Local/Nationwide Simplex (Ch 4)	P25	Law Tac
170.725	RM	167 NAC	FBI Chi A2	Chicago [A2]	P25	Law Tac
170.725	RM	167 NAC	FBI Chi A3A4	Chicago [A3/A4]	P25	Law Tac
170.625	RM	167 NAC	FBI Chi A5A6	Chicago [A5/A6]	P25	Law Tac
167.2125	RM	167 NAC	FBI Chi B1B2	Chicago [R B2/S B1]	P25	Law Tac
167.3375	RM	167 NAC	FBI Chi C1	Chicago	P25	Law Tac
173.150	RM	167 NAC	FBI Chi C3	Chicago [C3]	P25	Law Tac
170.350	RM	167 NAC	FBI Chi C7	Chicago (simulcasts w/169.950)	P25	Law Tac
164.550	RM	F7E NAC	FBI Chi D1/2	Chicago - OCDETF [R D1/S D2] (USCS/ICE?)	P25	Law Tac
166.4625	M	001 NAC	FBI Chi D3	Chicago T-COMM	P25	Law Tac
167.5375	RM	167 NAC	FBI Chi D5D6	Chicago - SWAT [R D6/S D5]	P25	Law Tac
163.100	M	167 NAC	FBI Chi D7	Chicago [D7]	P25	Law Tac
167.4875	RM	167 NAC	FBI Chi E1	Chicago [E1]	P25	Law Tac
169.950	RM	167 NAC	FBI Chi G3	Chicago - Events [R G3/S G4]	P25	Law Tac
170.350	RM	167 NAC	FBI Chi G5	Chicago G5	P25	Law Tac
167.5875	M	167 NAC	FBI Chi H5?	Chicago H5?	P25	Law Tac
167.4375	M	167 NAC	FBI Chi H6?	Chicago H6?	P25	Law Tac
164.550	RM	F7E NAC	FBI 164.550	Chicago Area (usually encrypted)	P25e	Law Tac
166.9375	RM	167 NAC	FBIChi166937	Chicago	P25	Law Tac
167.5125	BM	167 NAC	FBI 1675125	Chicago	P25	Law Tac
167.6125	B	167 NAC	FBI 1676125	Chicago	P25E	Law Tac
168.9875	RM	167 NAC	FBI Chicago	Chicago	P25	Law Tac
170.725	RM	167 NAC	FBI P25 1707	Chicago Area	P25	Law Tac
171.2625	RM	167 NAC	FBI 171.2625	Chicago Area-wide	P25E	Law Tac
171.6125	RM	167 NAC	FBI1716125	Chicago Area-wide (usually ENC)	P25	Law Tac
173.050	RM	167 NAC	FBI Chicago	Chicago	P25	Law Tac
173.1375	RM	167 NAC	FBI 1731375	Chicago	P25	Law Tac
173.9875	RM	167 NAC	FBI 1739875	Chicago	P25	Law Tac

Federal Communications Commission

Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
167.050		RM	173.8 PL	FCC Chicago	Chicago Ops	FM	Federal

Federal Emergency Management Agency

The FEMA Region 5 office is located in the 536 S. Clark / 101 W. Ida B. Wells Federal Building in downtown Chicago.

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
407.6625	RM	421 NAC	FEMA 5/6	Operations (Ch 5/6)	P25e	Federal
149.025	RM	312 NAC	FEMA 149.025	Ops (Chicago Office)	P25e	Federal
138.575	RM	118.8 PL	FEMA A5	Ops (Chicago Office)	FMN	Emergency Ops
140.925	M	118.8 PL	FEMA C5	Simplex (Chicago Office)	FMN	Emergency Ops
138.225	RM		FEMA N/Wide R	Nationwide Repeater (on scene)	FMN	Emergency Ops

Federal Reserve Bank of Chicago

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
406.6625	RM	CC 1 TG 10 SL 1	FedRsvCgo Police	Police Operations	DMR	Law Dispatch
407.6875	RM	CC 1 TG 6 SL 2	FedRsvCgo BldgOp	Building Operations	DMR	Federal
407.6875	RM	CC 1 TG 1 SL 1	FedRsvCgo Contr	Building Operations: Outside Contractors?	DMR	Federal

General Services Administration

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
406.1125	RM	CC 1 TG 1000 SL 1	GSA Kluczyns	Kluczyinski Federal Building: Operations	DMR	Federal
406.1125	RM	CC 1 TG 1000 SL 2	GSA Dirksen	Dirksen Federal Building: Operations	DMR	Federal
407.075	RM	CC 1 TG 1000 SL 1	GSA Clrk/Cng	536 S. Clark / 101 W. Ida B. Wells Federal Building: Operations	DMR	Federal
407.075	RM	CC 1 TG 1000 SL 2	GSA Metcalfe	Metcalfe Federal Building: Security/Operations	DMR	Federal

Immigration and Customs Enforcement

STARCOM21 Statewide Illinois
Project 25 Phase II

Some Homeland Security/Border Patrol/ICE operations

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
163.700	M	169 NAC	ICE NatTac 1	Nat Tac 1	P25	Law Tac
168.5875	M	169 NAC	ICE NatTac 2	Nat Tac 2	P25	Law Tac
163.1125	M	169 NAC	ICE NatTac 3	Nat Tac 3	P25	Law Tac
164.7875	M	169 NAC	ICE NatTac 4	NatTac 4	P25	Law Tac
166.4625	RM		ICE 166.4625	USCS/ICE Treasury - Common	FMN	Law Tac
162.0625	BM	C02 NAC	DHS Ohare 3*	Simulcast of INS Chicago (R F2/S F3)	P25	Law Tac
162.875	M	CSQ	INS Chicago A	INS Chicago mobiles	FMN	Law Tac
162.925	M		INS Chicago B	INS Chicago mobiles (may input 163.625 Repeater)	FMN	Law Tac
162.975	M		INS Chicago C	INS Chicago mobiles	FMN	Law Tac
163.625	RM	C02 NAC	DHS Ohare 3	INS Chicago (R F2/S F3)	P25	Law Tac
163.625	RM	C02 NAC	ICE 163.625	ICE	P25	Law Tac
163.675	BM	C02 NAC	DHS OHare	ICE/DHS Operations O'Hare (CBP/APHIS/ICE)	P25	Law Tac
163.750	B	C02 NAC	ICE 163.75	Simulcast with 163.475 ICE	P25	Law Tac
165.850	RM	C02 NAC	ICE 165.85	RCC/ICE	P25	Law Tac
166.0625	BM	C02 NAC	ICE 1660625	Operations	P25	Law Tac

Internal Revenue Service

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
165.950	RM	009 NAC	IRS Chicago Ch1	Ops (Ch 1/Repeat/Simplex)	P25	Federal
166.000	RM	131.8 PL	IRS Chicago A	Chicago Repeater/Simplex	FMN	Federal
166.000	RM	146.2 PL	IRS Chicago B	Chicago Repeater/Simplex	FMN	Federal
166.000	RM	192.8 PL	IRS Chicago C	Chicago Repeater/Simplex	FMN	Federal
163.2125	M	100 NAC	IRS Chi Tac-1	Tac-1	P25	Federal
163.6375	M	100 NAC	IRS Chi Tac-2	Tac-2	P25	Federal
418.175	RM	123.0 PL	IRS CID C2C	CID Car-to-Car Chicago	FMN	Federal
418.225	RM	123.0 PL	IRS CID Rptr	CID Repeater/Simplex Chicago	FMN	Federal

Justice - 25 Cities Interoperability Project

These P25 repeaters support local, state and federal voice communications interoperability their respective areas (High Risk Metropolitan Area Interoperability)

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
170.8125	RM	653 NAC	DOJ Chi Com N	Command - North (Palatine) [CG-COM-N]	P25	Interop
168.8875	RM	653 NAC	DOJ Chi Tac N	Tactical - North (Palatine) [CG-TAC-N]	P25	Interop
171.6875	RM	653 NAC	DOJ Chi Com C	Command - Central (Chicago) [CG-COM-C]	P25	Interop
172.2125	RM	653 NAC	DOJ Chi Tac C	Tactical - Central (Chicago) [CG-TAC-C]	P25	Interop
171.4375	RM	653 NAC	DOJ Chi Com S	Command - South (Joliet) [CG-COM-S]	P25	Interop
168.9125	RM	653 NAC	DOJ Chi Tac S	Tactical - South (Joliet) [CG-TAC-S]	P25	Interop
171.4875	BM	653 NAC	DOJ Ops-A	Operations	P25	Interop

Labor

Frequency	Type	Alpha Tag	Description	Mode	Tag
406.200	M	DOL OCTF 1	Organized Crime Task Force [Ch 1]	FMN	Federal
414.775	M	DOL OCTF 2	Organized Crime Task Force [Ch 2]	FMN	Federal
412.400	M	DOL OCTF 3	Organized Crime Task Force [Ch 3]	FMN	Federal
164.700	M	DOL WH U1	Wage and Hour Unit	FMN	Federal
166.200	M	DOL WH U2	Wage and Hour Unit	FMN	Federal

Marshals Service

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
162.7875	RM		USM Chicago A	Chicago (also simplex)	P25	Law Tac
163.200	RM	293 NAC	USM Chicago B	Chicago repeater (& simplex)	P25	Law Tac
164.600	RM		USM Chicago C	Chicago (also simplex)	P25	Law Tac
170.850	M	127.3 PL	USM Chi CSU 1	Chicago: Courts Security Unit [Ch 1]	FMN	Law Tac
170.750	M	74.4 PL	USM Chi CSU 2	Chicago: Courts Security Unit [Ch 2]	FMN	Law Tac

Bureau of Prisons

Metropolitan Correctional Center Chicago (P25)
Project 25 Phase I

Operations (as of 7/23)

Federal Protective Service

RIDs observed on 410.800: 6722065, 6750058, 6750065 (4/7/22)

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
410.800	RM	201 NAC	FPS Chicago New	New	P25e	Law Tac
406.700	RM	201 NAC	FPS Chicago Wide	Wide Area (Chicago/Milwaukee) [Base Enc]	P25e	Law Tac
406.200	RM	201 NAC	FPS ChicagoLocal	Local Area	P25	Law Tac

Postal Service

USPS radio operations appear to have shifted primarily to digital modes (P25 for police and inspectors, DMR for facility operations). Any analog operations listed below may be old and out of service. (April 2022)

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
162.225	RM	114.8 PL	USPS 162.225	Operations (Chicago)	FMN	Federal
162.225	RM	612 DPL	USPS 162.225	Flight Loading (Chicago Base)	FMN	Federal
164.375	BM		USPS 164.375	Flight Loading (OHare)	FMN	Federal
164.9875	BM	CSQ	USPS 164.9875	Operations (Chicago)	FMN	Federal
165.150	RM	546 DPL	USPS 165.150	Tractor/Trailer Ops	FMN	Federal
166.225	BM	CSQ	USPS 166.225	Operations (Chicago)	FMN	Federal
166.375	BM	CSQ	USPS 166.375	Operations (OHare facility)	FMN	Federal
168.275	BM	82.5 PL	USPS 168.275	Operations (link w/414.75) (Chicago)	FMN	Federal
169.650	BM		USPS 169.650	Inspectors - Old (Chicago)	FMN	Law Tac
169.8375	RM	223 DPL	USPS 169.8375	Operations (Chicago)	FMN	Federal
169.850	RM		USPS 169.850	Inspectors/Police	FMN	Law Tac
171.625	BM	CSQ	USPS 171.625	Forest Park Sorting Facility	FMN	Federal
171.975	RM	CSQ	USPS ORD	Cargo/Flight Loading (OHare)	FMN	Federal
171.975	BM	CSQ	USPS Lake Villa	Operations (Lake Villa)	FMN	Federal
406.1375	RM	152 DPL	USPS SSP-DC Mnt	S Suburban P/DC Bedford Park: Maintenance	FMN	Federal
406.325	RM		USPS 406.325	Operations (Chicago)	FMN	Federal
406.3375	M	482 NAC	USPS Chi 4063375	Inspectors	P25E	Law Tac
406.500	RM	411 DPL	USPS Chi Dock	Dock Ops (Chicago)	FMN	Federal
406.5375	RM	CC 1 TG 5 SL 2	USPS Chi 2	Chicago Main Post Office: Operations	DMR	Federal
406.5375	RM	CC 1 TG 1 SL 1	USPS Chi 1	Chicago Main Post Office: Mail Handling Ops	DMR	Federal
406.9375	RM	464 DPL	USPS Palatine	Palatine Processing / Distribution Center	FMN	Federal
407.175	RM	CC 1 TG 2 SL 1	USPS Chi Techs	Chicago Main Post Office: Technicians and Mechanics	DMR	Federal
407.475	RM	565 DPL	USPS SSP-DC Mail	S Suburban P/DC Bedford Park: Mail Processing	FMN	Federal
407.5375	RM	CC 1 TG 1 SL 1	USPS ORD Ops	Operations (OHare): Operations	DMR	Federal
407.5375	RM	CC 1 TG 2 SL 2	USPS ORD Maint	Operations (OHare): Machine Maintenance	DMR	Federal
407.725	RM	482 NAC	USPS 407725	Operations (Chicago Base)	P25e	Federal
407.725	RM	82.5 PL	USPS Blue	Inspectors/Police (Blue Chicago)	FMN	Law Tac
407.8875	BM	CC 1 TG 5 SL 2	USPS CBMC 5	Chicago Bulk Mail Center (Forest Park) - Operations	DMR	Federal
407.8875	RM	CC 1 TG 1 SL 1	USPS CBMC 1	Chicago Bulk Mail Center (Forest Park) - Dock Operations	DMR	Federal
407.9375	RM	343 DPL	USPS 407.9375	Operations (OHare ?)	FMN	Federal
408.025	RM	192.8 PL	USPS 408.025	Operations (Chicago/OHare)	FMN	Federal
408.050	BM	192.8 PL	USPS 408.050	Operations (OHare)	FMN	Federal
408.0875	RM	CC 1 TG 2 SL 1	USPS CBMC 2	Chicago Bulk Mail Center (Forest Park) - Sorting	DMR	Federal
408.1375	BM	306 DPL	USPS 408.1375	Dock Ops	FM	Federal
408.400	RM	103.5 PL	USPS 408.400	Operations	FMN	Federal
408.425	RM	CC 1 TG 7 SL 1	USPS CBMC 7	Chicago Bulk Mail Center (Forest Park) - Trailer Marshalling	DMR	Federal
408.750	M		USPS 408.750	Operations (OHare)	FMN	Federal
409.1375	RM	CC 1 TG 3 SL 1	USPS ORD Ch. 3	Chicago International Service Center (O'Hare) Channel 3	DMR	Federal
410.000	BM		USPS Chi RedBase	Red Base (Chicago)	FMN	Federal
410.325	BM		USPS 410.325	Operations (Chicago mobiles)	FMN	Federal
411.400	BM	123.0 PL	USPS OHr Ops	Building Ops (OHare)	FMN	Federal
411.450	RM	118.8 PL	USPS 411.450	Operations (Chicago area)	FMN	Federal
411.475	RM		USPS 411.475	Building Maintenance (O'Hare)	FMN	Federal
411.550	B	131.8 PL	USPS 411.550	Operations (Chicago area)	FMN	Federal
414.750	RM		UPSP PD Red P25	Inspectors/Police - Red (Chicago)	P25E	Law Tac
414.750	RM	82.5 PL	USPS PD Red	OLD? Inspectors/Police - Red (Chicago)	FMN	Law Tac
416.975	RM	CSQ	USPS Paging	Paging (Chicago)	FMN	Federal
417.775	RM	82.5 PL	USPS Green	Inspectors/Police Green (North Chicago)	FMN	Federal
418.300	RM	82.5 PL	USPS SecChi	Security (Chicago)	FMN	Security

Secret Service

The Secret Service is now mostly encrypted P25 in the Chicago area.

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
165.7875	RM	001 NAC	USSS Baker	BAKER	P25	Law Tac
165.375	RM	001 NAC	USSS Charlie	CHARLIE	P25	Law Tac
165.375	RM	001 NAC	USSS Charlie	CHARLIE (alternate input)	P25	Law Tac
165.2125	RM	001 NAC	USSS Mike	MIKE	P25	Law Tac
164.650	RM	001 NAC	USSS Tango	TANGO	P25	Law Tac
164.400	M	001 NAC	USSS Papa	PAPA - simplex (and input to 165.7875)	P25	Law Tac
164.8875	M	001 NAC	USSS Oscar	OSCAR Presidential Detail	P25	Law Tac
167.0125	RM	001 NAC	USSS 1670125	Executive Protection Details	P25	Law Tac
167.0375	RM	001 NAC	USSS 1670375	Executive Protection Details	P25	Law Tac

State Department

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
407.600	M		USSD Chi 3	Chicago - Car-to-Car simplex [Ch 3]	P25	Law Tac
408.600	M		USSD Chi 4	Chicago: Car-to-Car [Ch 4]	P25	Law Tac
409.525	RM	293 NAC	USSD DigProt	Diplomatic Security Service	P25	Law Tac
409.625	RM	293 NAC	USSD Chi 1	Chicago [Ch 1]	P25	Law Tac

Transportation Security Administration

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
406.7375	RM	010 NAC	TSA ORD	Operations (O'Hare Airport)	P25e	Federal
406.7375	RM	070 NAC	TSA MDW	Operations (Midway Airport)	P25e	Federal
172.150	RM	1A2 NAC	TSA MDW 1	Operations (Midway Airport)	P25	Federal
172.900	RM	1A2 NAC	TSA MDW 2	Operations (Midway Airport)	P25	Federal
169.1625	RM	001 NAC	TSA 1691625	Operations	P25	Federal
169.300	RM	001 NAC	TSA 169.3	Operations	P25	Federal
172.150	RM	001 NAC	TSA 172.150	Operations	P25	Federal
172.900	RM	001 NAC	TSA 172.900	Operations	P25	Federal

Veterans Administration

- An unknown Tac 2 frequency has been reported in use by Hines VA Medical Center Police. (11/17)

Motorola Federal Solutions
Project 25 Phase II

Jesse Brown VA Medical Center is Site 104 in this system. VA Police use talkgroup 10191 (8/26/20)

Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
166.7125		BM		AbeLinc Cemetery	Abraham Lincoln National Cemetery (Elwood) - Operations	FMN	Federal
409.4375		RM	192.8 PL	CJALFHC Engr	Capt James A Lovell FHC: Engineering (North Chicago)	FMN	Federal
166.7125	WCJ64	RM	421 NAC	CJALFHC Police	Capt James A Lovell FHC: Police (North Chicago)	P25	Law Dispatch
163.2625		RM	221 NAC	CJALFHC Security	Capt James A Lovell FHC: Security (North Chicago)	P25	Federal
170.000		RM	116 DPL	HVAMC Engr	Hines VAMC: Engineering (Hines)	FM	Federal
416.500		M	023 DPL	HVAMC Ops	Hines VAMC: Operations (Hines)	FMN	Federal
411.350		RM	293 NAC	HVAMC Police	Hines VAMC: Police (Hines)	P25	Law Dispatch
409.050		RM	192.8 PL	JBVAMC Engr	Jesse Brown VAMC: Engineering (Chicago)	FMN	Federal
406.775		RM	123.0 PL	JBVAMC Hskpg	Jesse Brown VAMC: Housekeeping (Chicago)	FMN	Federal
408.600		RM	203.5 PL	JBVAMC Police	Jesse Brown VAMC: Police Alternate (Chicago)	FMN	Law Tac

National Weather Service

NOAA National Severe Storms Labs

Frequency	Type	Alpha Tag	Description	Mode	Tag
163.100	M	NSSL F1/F2	NSSL (Ch 1 Smplx/Ch 2 Rptr)	FMN	Federal
163.275	M	NSSL F3	NSSL Simplex (Ch 3)	FMN	Federal
165.4375	RM	NOAA Nationa	NSSL (inputs Aero) (O'Hare? FAA)	FMN	Federal

Military

Civil Air Patrol

Also please see the Nationwide listings

Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
148.125		RM	107.2 PL	CAP Chicago	Chicago Repeater [R25]	FMNe	Aircraft
148.125		RM	430 NAC	CAP Chicago P25	Chicago Repeater [R25P] [$FFF also reported]	P25e	Aircraft

Coast Guard

A more complete list is at US Coast Guard

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
163.1375	BM	293 NAC	USCG NET 113	Boarding Operations, etc.	P25	Military
164.900	BM	293 NAC	USCG NET 118	Law Enforcement / Operations Net 118	P25	Military
171.2375	BM	293 NAC	USCG NET 127	Sector Lake Michigan	P25	Military
412.975	BM	293 NAC	USCG NET 409	Lake Michigan Aviation Primary Net 409	P25	Military

Illinois National Guard

STARCOM21 Statewide Illinois
Project 25 Phase II

The Illinois National Guard conducts a directed net of armories and other facilities on the first Wednesday of each month at 9:00 AM on TG 30341 (ITTF Incident 5).

Frequency	License	Type	Tone	Alpha Tag	Description	Mode	Tag
150.6875		RM	103.5 PL	NRvrsdeArmy	North Riverside Armory (OOS?)	FM	Military

Miscellaneous

Frequency	Type	Tone	Alpha Tag	Description	Mode	Tag
163.000	RM		USN Blue Ang	US Navy: Blue Angels ground (2004)	FM	Military
164.900	RM		USN Blue Ang	US Navy: Blue Angels ground	FM	Military
170.900	RM		USN Blue Ang	US Navy: Blue Angels (2003)	FM	Military
413.000	RM		USAF T-Birds	USAF Thunderbirds demo team ground	P25	Military
413.275	RM	CSQ	USAF T-Birds	USAF Thunderbirds demo team ground analog	FM	Military