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Chicago (ZAU) Air Route Traffic Control Center

Last Updated: March 14, 2025, 15:15 pm UTC
Category Report

Frequencies

Illinois RCAG Sites

Bloomington, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
124.800 BM CSQ ZAU45 RBS-H Sector 45 Roberts Hi (Spare) FL230-999 AM Aircraft
353.775 BM ZAU45 RBS-H Sector 45 Roberts Hi (Spare) FL230-999 AM Aircraft
Bradford, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
124.550 BM CSQ ZAU50 STQ-L Sector 50 Streator Low SFC to 10,000 (Normally combined at ZAU51) AM Aircraft
132.225 BM CSQ ZAU52 BDF-H Sector 52 Bradford Hi FL240-330 AM Aircraft
307.125 BM ZAU50 STQ-L Sector 50 Streator Low SFC to 10,000 (Normally combined at ZAU51) AM Aircraft
323.225 BM ZAU52 BDF-H Sector 52 Bradford Hi FL240-330 AM Aircraft
Chicago Heights, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
132.950 BM CSQ ZAU (Spare) Spare/Traffic Congestion (Normally combined at ZAU44) AM Aircraft
318.800 BM ZAU (Spare) Spare/Traffic Congestion (Normally combined at ZAU44) AM Aircraft
Danville, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
135.750 BM CSQ ZAU57 DNV-L Sector 57 Danville Low 10,000-FL180 AM Aircraft
353.950 BM ZAU57 DNV-L Sector 57 Danville Low 10,000-FL180 AM Aircraft
Des Plaines, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
120.350 BM CSQ ZAU81 CRIBB Sector 81 CRIBB Low AM Aircraft
317.400 BM ZAU81 CRIBB Sector 81 CRIBB Low AM Aircraft
363.125 BM ZAU DesPlaines Chicago Center Des Plaines, w/128.650 (10/23 directory) AM Aircraft
377.075 BM ZAU81 CRIBB Sector 81 CRIBB Low (New) AM Aircraft
Downers Grove IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
279.525 BM ZAU DwnrsGrv U Chicago Center Downers Grove, use unknown (10/23 directory) AM Aircraft
Freeport, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
132.625 BM CSQ ZAU71 ALO-SH Sector 71 Waterloo Super Hi FL370 & Abv AM Aircraft
350.250 BM ZAU71 ALO-SH Sector 71 Waterloo Super Hi FL370 & Abv AM Aircraft
Hampshire, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
134.200 BM CSQ ZAU WKLD Spare Workload Freq NW AM Aircraft
291.750 BM ZAU WKLD Spare Workload Freq NW AM Aircraft
Joliet, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
135.150 BM CSQ ZAU51 PLANO Sector 51 PLANO Low 11,000-FL230 AM Aircraft
323.300 BM ZAU51 PLANO Sector 51 PLANO Low 11,000-FL230 AM Aircraft
Kankakee, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
118.225 BM CSQ ZAU83 JOT-H Sector 83 Joliet Hi FL240-340 AM Aircraft
119.950 BM CSQ ZAU43 NEWTT Sector 43 NEWTT Low FL190-FL230 AM Aircraft
120.125 BM CSQ ZAU44 EON-L Sector 44 Peotone Low FL190--FL230 AM Aircraft
256.800 BM ZAU44 EON-L Sector 44 Peotone Low FL190-FL230 AM Aircraft
284.700 BM ZAU Kankakee Chicago Center Kankakee unknown use (10/23 directory) AM Aircraft
353.550 BM ZAU83 JOT-H Sector 83 Joliet Hi FL240-340 AM Aircraft
353.700 BM ZAU43 NEWTT Sector 43 NEWTT Low FL190-230 AM Aircraft
Leroy, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
119.225 BM CSQ ZAU58 LINCN Sector 58 Lincoln Low 11,000-FL230 AM Aircraft
307.250 BM ZAU58 LINCN Sector 58 Lincoln Low 11,000-FL230 AM Aircraft
Maple Park, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
134.825 BM ZAU77 MALTA Sector 77 MALTA Low AM Aircraft
307.275 BM ZAU77 MALTA Sector 77 MALTA Low AM Aircraft
127.075 BM CSQ ZAU77 MALTA Sector 77 MALTA Low (Deprecated?) AM Aircraft
Marengo, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
133.350 BM CSQ ZAU74 FARMM Sector 74 FARMM Low AM Aircraft
335.800 BM ZAU74 FARMM Sector 74 FARMM Low AM Aircraft
Mazon, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
123.750 BM CSQ ZAU50 STQ-L Sector 50 Streator Low SFC to 10,000 (Normally combined at ZAU51) AM Aircraft
259.100 BM ZAU50 STQ-L Sector 50 Streator Low SFC to 10,000 (Normally combined at ZAU51) AM Aircraft
Milford, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
121.275 BM CSQ ZAU46 BVT-H Sector 46 Boiler Hi FL240-300 AM Aircraft
127.325 BM CSQ ZAU47 RAN-SH Sector 47 Chanute Super Hi FL310 & Abv AM Aircraft
327.025 BM ZAU47 RAN-SH Sector 47 Chanute Super Hi FL310 & Abv AM Aircraft
351.950 BM ZAU46 BVT-H Sector 46 Boiler Hi FL240-300 AM Aircraft
Moline, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
118.750 BM CSQ ZAU55 BRL-L Sector 55 Burlington Low SFC to FL230 AM Aircraft
377.050 BM ZAU55 BRL-L Sector 55 Burlington Low SFC to FL230 AM Aircraft
Monee, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
126.275 BM CSQ ZAU84 MCK-SH Sector 84 McCook Super Hi AM Aircraft
360.750 BM ZAU84 MCK-SH Sector 84 McCook Super Hi AM Aircraft
Northbrook, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
128.650 BM CSQ ZAU WKLD Overload for ZAU 26/81/83 AM Aircraft
133.200 BM CSQ ZAU26 KUBBS Sector 26 KUBBS Low SFC to FL230 AM Aircraft
343.675 BM ZAU26 KUBBS Sector 26 KUBBS Low SFC to FL230 AM Aircraft
351.825 BM ZAU WKLD Overload for ZAU26/81/83 AM Aircraft
Pontiac, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
119.950 BM CSQ ZAU43 NEWTT Sector 43 NEWTT Low AM Aircraft
353.700 BM ZAU43 NEWTT Sector 43 NEWTT Low AM Aircraft
Roberts, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
134.025 BM CSQ ZAU45 RBS-H Sector 45 Roberts Hi FL240-999 AM Aircraft
379.150 BM ZAU45 RBS-H Sector 45 Roberts Hi FL240-999 AM Aircraft
Rockford, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
124.725 BM CSQ ZAU92 HAWKS Sector 92 HAWKS Hi FL240-320 AM Aircraft
279.650 BM ZAU92 HAWKS Sector 92 HAWKS Hi FL240-320 AM Aircraft
Waukegan, IL - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
126.425 BM CSQ ZAU82 SWEET Sector 82 SWEET Low AM Aircraft
348.725 BM ZAU82 SWEET Sector 82 SWEET Low AM Aircraft

Indiana RCAG Sites

Crown Point, IN - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
134.875 BM CSQ ZAU35 BEARZ Sector 35 BEARZ Low 11,000-FL250 AM Aircraft
290.250 BM ZAU35 BEARZ Sector 35 BEARZ Low 11,000-FL250 AM Aircraft
Fort Wayne, IN - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
119.850 BM CSQ ZAU37 OLK-L Sector 37 Wolf Lake Low SFC to FL230 AM Aircraft
307.375 BM ZAU37 OLK-L Sector 37 Wolf Lake Low SFC to FL230 AM Aircraft
Goshen, IN - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
127.550 BM CSQ ZAU80 KELOG Sector 80 KELOG Low AM Aircraft
128.800 BM CSQ ZAU31 GSH-L Sector 31 Goshen Low (Normally combined at ZAU37) AM Aircraft
307.175 BM ZAU80 KELOG Sector 80 KELOG Low AM Aircraft
314.000 BM ZAU31 GSH-L Sector 31 Goshen Low (Normally combined at ZAU37) AM Aircraft
Rossville, IN - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
120.975 BM CSQ ZAU32 OKK-L Sector 32 Kokomo Low SFC to FL230 AM Aircraft
125.375 BM CSQ ZAU34 LOGAN Sector 34 LOGAN Hi FL240-340 AM Aircraft
341.700 BM ZAU34 LOGAN Sector 34 LOGAN Hi FL240-340 AM Aircraft
350.350 BM ZAU32 OKK-L Sector 32 Kokomo Low Spare Freq AM Aircraft
370.850 BM ZAU32 OKK-L Sector 32 Kokomo Low SFC to FL230 AM Aircraft

Iowa RCAG Sites

Burlington, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
135.600 BM CSQ ZAU55 BRL-L Sector 55 Burlington Low AM Aircraft
370.950 BM ZAU55 BRL-L Sector 55 Burlington Low AM Aircraft
Cedar Rapids, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
132.800 BM CSQ ZAU56 OTM-L Sector 56 Ottumwa Low SFC to FL230 AM Aircraft
135.975 BM CSQ ZAU95 AWG-SH Sector 95 Washington Super Hi AM Aircraft
328.400 BM ZAU56 OTM-L Sector 56 Ottumwa Low SFC to FL230 AM Aircraft
335.550 BM ZAU95 AWG-SH Sector 95 Washington Super Hi AM Aircraft
Davenport, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
125.625 BM CSQ ZAU Spare Sector 90/91 Choke Point Spare AM Aircraft
281.525 BM ZAU Spare Sector 90/91 Choke Point Spare AM Aircraft
Des Moines, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
127.050 BM CSQ ZAU SW/WKLD Spare Freq for SW ZAU Area AM Aircraft
282.350 BM ZAU SW/WKLD Spare Freq for SW ZAU Area AM Aircraft
Dubuque, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
118.425 BM CSQ ZAU75 COTON Sector 75 COTON Hi FL240-320 AM Aircraft
125.225 BM CSQ ZAU76 ARL-H Sector 76 Arlington Hi FL330-360 AM Aircraft
127.775 BM CSQ ZAU75 COTON Sector 75 COTON Hi FL240-320 AM Aircraft
133.950 BM CSQ ZAU63 DBQ-L Sector 63 Dubuque Low SFC to FL230 AM Aircraft
281.400 BM ZAU63 DBQ-L Sector 63 Dubuque Low SFC to FL230 AM Aircraft
322.475 BM ZAU76 ARL-H Sector 76 Arlington Hi FL330-360 AM Aircraft
327.150 BM ZAU75 COTON Sector 75 COTON Hi FL240-320 AM Aircraft
Ottumwa, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
118.150 BM CSQ ZAU56 OTM-L Sector 56 Ottumwa Low AM Aircraft
354.100 BM ZAU56 OTM-L Sector 56 Ottumwa Low AM Aircraft
Washington, IA - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
125.575 BM CSQ ZAU94 IOW-SH Sector 94 Iowa City Super Hi AM Aircraft
128.525 BM CSQ ZAU90 LOWLI Sector 90 LOWLI Hi AM Aircraft
134.325 BM CSQ ZAU91 HNC-SH Sector 91 Hanna City Super Hi AM Aircraft
236.775 BM ZAU91 HNC-SH Sector 91 Hanna City Super Hi AM Aircraft
257.725 BM ZAU94 IOW-SH Sector 94 Iowa City Super Hi AM Aircraft
319.200 BM ZAU90 LOWLI Sector 90 LOWLI Hi AM Aircraft

Michigan RCAG Sites

Grand Rapids, MI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
126.125 BM CSQ ZAU25 PMM-H Sector 25 Pullman Hi FL200-320 AM Aircraft
319.100 BM ZAU25 PMM-H Sector 25 Pullman Hi FL200-320 AM Aircraft
Jones, MI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
120.225 BM CSQ ZAU85 LGR-SH Sector 85 LaGrange Super Hi AM Aircraft
125.975 BM CSQ ZAU23 EMP-SH Sector 23 Empire Super Hi FL330 & Abv AM Aircraft
126.475 BM CSQ ZAU89 GIJ-H Sector 89 Gipper Hi AM Aircraft
127.625 BM CSQ ZAU88 ELX-H Sector 88 Keeler Hi FL240-330 AM Aircraft
269.350 BM ZAU85 LGR-SH Sector 85 LaGrange Super Hi AM Aircraft
273.600 BM ZAU88 ELX-H Sector 88 Keeler Hi FL240-330 AM Aircraft
317.575 BM ZAU23 EMP-SH Sector 23 Empire Super Hi FL330 & Abv AM Aircraft
353.625 BM ZAU89 GIJ-H Sector 89 Gipper Hi AM Aircraft
Muskegon, MI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
132.275 BM CSQ ZAU24 3FM-H Sector 24 Freemont Hi FL200-330 AM Aircraft
254.350 BM ZAU24 3FM-H Sector 24 Freemont Hi FL200-330 AM Aircraft
Niles, MI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
124.825 BM CSQ ZAU33 BURBN Sector 33 BURBN Super Hi FL350 & Abv AM Aircraft
126.325 BM CSQ ZAU36 FWA-H Sector 36 Fort Wayne Hi FL240-340 AM Aircraft
322.525 BM ZAU36 FWA-H Sector 36 Fort Wayne Hi FL240-340 AM Aircraft
323.050 BM ZAU33 BURBN Sector 33 BURBN Super Hi FL350 & Abv AM Aircraft
Pullman, MI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
128.500 BM ZAU UNKNOWN Unknown Sector Low AM Aircraft
128.500 BM CSQ ZAU22 SPARTA Sector 22 Sparta Low SFC to FL190 AM Aircraft
133.200 BM ZAU UNKNOWN Unknown Sector Low AM Aircraft
273.525 BM ZAU22 SPARTA Sector 22 Sparta Low SFC to FL190 AM Aircraft
273.525 BM ZAU UNKNOWN Unknown Sector Low and High AM Aircraft
343.675 BM ZAU UNKNOWN Unknown Sector Low AM Aircraft

Wisconsin RCAG Sites

Horicon, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
121.375 BM CSQ ZAU61 QHZ-SH Sector 61 Horicon Super Hi FL340 & Abv AM Aircraft
126.875 BM CSQ ZAU60 BAE-H Sector 60 Badger Hi FL240-FL330 AM Aircraft
135.550 BM CSQ ZAU SPARE Spare Workload Freq for North Area AM Aircraft
269.075 BM ZAU60 BAE-H Sector 60 Badger Hi FL240-FL330 AM Aircraft
282.275 BM ZAU61 QHZ-SH Sector 61 Horicon Super Hi FL340 & Abv AM Aircraft
306.975 BM ZAU SPARE Spare Workload Freq for North Area AM Aircraft
Lone Rock, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
133.300 BM CSQ ZAU64 LNR-L Sector 64 Lone Rock Low SFC to FL230 AM Aircraft
257.925 BM ZAU64 LNR-L Sector 64 Lone Rock Low SFC to FL230 AM Aircraft
Milwaukee, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
123.825 BM CSQ ZAU62 HARLY Sector 62 Harley Low SFC to FL230 AM Aircraft
125.100 BM CSQ ZAU27 SQUIB Sector 27 SQUIB Low SFC to FL230 AM Aircraft
290.475 BM ZAU27 SQUIB Sector 27 SQUIB Low SFC to FL230 AM Aircraft
291.700 BM ZAU62 HARLY Sector 62 Harley Low SFC to FL230 AM Aircraft
Oshkosh, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
132.100 BM CSQ ZAU64 LNR-L Sector 64 Lone Rock Low AM Aircraft
319.250 BM ZAU64 LNR-L Sector 64 Lone Rock Low AM Aircraft
Sullivan, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
128.175 BM CSQ ZAU SPARE Spare Workload Freq for North Area AM Aircraft
343.725 BM ZAU SPARE Spare Workload Freq for North Area AM Aircraft
Volk Field, WI - RCAG
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
125.050 BM CSQ ZAU64 LNR-L Sector 64 Lone Rock Low SFC to FL230 (SPARE FREQ) AM Aircraft
269.375 BM ZAU64 LNR-L Sector 64 Lone Rock Low SFC to FL230 (SPARE FREQ) AM Aircraft