Frequencies
Illinois State Police
Division of Patrol - Statewide
Communications Centers, each serving 1 to 3 Troops:
• Sterling (Troops 1, 2)
• Chicago (Troop 3)
• Pontiac (Troops 4, 5, 7)
• Springfield (Troop 6, Command Center/CHQ)
• Collinsville/Metro East (Troop 8)
• DuQuoin (Troops 9, 10)
STARCOM21 uses 700- and 800-MHz mobiles/towers, along with VHF vehicular repeaters, to increase communications capability when using a portable radio outside their vehicles.
ISPERN-Illinois State Police Emergency Radio Network (155.475, which can be patched between VHF and STARCOM21 talkgroups). Some Troops may broadcast a PL/DPL
As of 3/26, statewide mobiles for all Law Agencies have been licensed per ILEAS for 155.46 (HF4), 155.4825 (VLAW2), 155.025 (ESMARN), 155.055 (IREACH), 155.16 (VSAR16), 155.925 (IEMA VHF)
| STARCOM21 Statewide Illinois Project 25 Phase II | Used by all Troops for Primary Dispatch/Car-to-Car, etc. operations. (since 11/2/07) |
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 155.475 | KA5825 | BM | CSQ | ISPERN CSQ | ISPERN [HF-1] (statewide Rx) | FMN | Law Dispatch |
| 155.475 | KN3600 | BM | 156 DPL | ISPERN D156 | ISPERN [HF-1] (statewide Tx) | FMN | Law Dispatch |
| 155.475 | KA5825 | BM | 67.0 PL | ISPERN 67.0 | ISPERN [HF-1] (Some Districts Tx) | FMN | Law Dispatch |
| 155.475 | B | 71.9 PL | ISPERN 71.9 | ISPERN [HF-1] (Districts C, 2, 5, 15, 17, 21) | FMN | Law Dispatch | |
| 155.055 | KA5825 | BM | CSQ | IREACH CSQ | Illinois Radio Emergency Assistance Channel [HF-3] (Legacy/Rx) | FMN | Interop |
| 155.055 | KA5825 | M | 156 DPL | IREACH D156 | Illinois Radio Emergency Assistance Channel [HF-3] (Tx) | FMN | Interop |
| 155.460 | KA5825 | BM | CSQ | ISP S/W HF-4 | State Law: Car-to-Car (former HF4 - Ch 7) | FMN | Law Tac |
| 155.505 | KA5825 | M | CSQ | ISP VHF MX CSQ | Mobile Extenders to SC21 | FMN | Law Dispatch |
| 155.505 | KA5825 | M | 293 NAC | ISP VHF MX N293 | Mobile Extenders to SC21 (NAC varies per car) | P25 | Law Dispatch |
Troop 1 - Rockford
Boone, Carroll, Jo Daviess, Lee, Ogle, Stephenson, Whiteside and Winnebago Counties.
Troop 1 is now patrolling I-88 in Lee and Ogle Counties as well as I-90 in Winnebago County. Both tollways were formerly patrolled by Troop 15. (1/5/25)
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.680 | KSA774 | B | 67.0 PL | ISP T1 HF2B D1 | (BACKUP) Dispatch: Base-to-Mobiles STERLING | FMN | Law Dispatch |
| 154.680 | KA5825 | M | 110.9 PL | ISP T1 HF2M D1 | (BACKUP) Dispatch: Mobiles-to-Base STERLING | FMN | Law Dispatch |
| 155.520 | KSF947 | BM | 110.9 PL | ISP T1 HF2 D16 | (BACKUP) Dispatch [HF-2] | FMN | Law Dispatch |
Troop 2 - Moline
Rock Island, Mercer, Henry, Bureau, Putnam and LaSalle Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 155.445 | KEO371 | BM | ISP T2 HF-2? D1 | (BACKUP) Dispatch (D662/D701?)(LaSalle) | FMN | Law Dispatch | |
| 154.845 | KSB229 | B | 67.0 PL | ISP T2 HF-2B D7 | (BACKUP) Dispatch: Base-to-Mobiles (E Moline) | FMN | Law Dispatch |
| 155.460 | KEO371 | BM | 67.0 PL | ISP T2 HF4 67.0 | (BACKUP) HF-4 (LaSalle) | FMN | Law Dispatch |
Troop 3 - Chicago
Serving: Cook, McHenry, Lake, DeKalb, Kane, DuPage, Kendall, Will and Grundy Counties.
Also patrols the portions of tollways I-88, I-90, I-294, I-355 and I-390 in their jurisdiction that were formerly patrolled by Troop 15. (1/5/25)
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 155.505 | KA5825 | M | B0C NAC | ISP T3 VHF MX D3 | Mobile Extenders (to SC21) | P25 | Law Dispatch |
| 154.935 | KSB242 | BM | ISP T3 HF-2 DChi | (BACKUP) Special Details/Alternate D CHICAGO | FMN | Law Tac | |
| 154.695 | KSB233 | B | 67.0 PL | ISP T3 HF-2B D2 | (BACKUP) Dispatch: Base-to-Mobiles / Scales ELGIN D2 | FMN | Law Dispatch |
| 154.695 | KA5825 | M | 110.9 PL | ISP T3 HF-2M D2 | (BACKUP) Dispatch: Mobiles-to-Base / Scales ELGIN D2 | FMN | Law Dispatch |
| 154.920 | KSB230 | BM | CSQ | ISP T3 HF-2 D5 | (BACKUP) Dispatch D5 JOLIET | FMN | Law Dispatch |
Troop 4 - Peoria
Knox, Stark, Marshall, Peoria, Woodford, Tazewell, Henderson, Warren, Hancock, McDonough, and Fulton Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.695 | KSA775 | B | 411 DPL | ISP T4 HF-2B D14 | (BACKUP) Dispatch (Macomb D14) | FMN | Law Dispatch |
| 155.520 | KSB228 | B | 205 DPL | ISP T4 HF-2B D8 | (BACKUP) Dispatch (Peoria D8) | FMN | Law Dispatch |
Troop 5 - Bloomington
Livingston, McLean, Dewitt, Kankakee, Ford, and Iroquois Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.680 | KSA776 | BM | CSQ | ISP T5 HF-2 D6 | (BACKUP) Dispatch (Pontiac D6) | FMN | Law Dispatch |
Troop 6 - Springfield / CHQ
Adams, Schuyler, Brown, Pike, Scott, Mason, Logan, Cass, Menard, Morgan, Sangamon, and Christian Counties.
Central HeadQuarters (CHQ) - Springfield information is located on the SANGAMON COUNTY page
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.935 | KNNU245 | BM | 223 DPL | ISP T6 HF-2 D9 | (BACKUP) Dispatch (Springfield D9) | FMN | Law Dispatch |
| 154.680 | KGY335 | B | 662 DPL | ISP T6 HF-2 D20 | (BACKUP) Dispatch (Pittsfield D20) | FMN | Law Dispatch |
| 154.650 | KA5825 | M | 754 DPL | ISP T6 Mob D9 | (IN USE?) Mobile Units (Springfield D9) | FMN | Law Tac |
| 156.000 | KS3183 | M | CSQ | ISP T6 U2U D9 | (IN USE?) Unit-to-Unit (Springfield D9) | FMN | Law Tac |
| 857.7375 | WNMF342 | F | 82.5 PL | ICJIA Data Spfld | ICJIA Data (Springfield/Buffalo) | FM | Data |
Troop 7 - Champaign
Macon, Piatt, Champain, Vermillion, Shelby, Moutlrie, Douglas, Coles and Edgar Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.695 | KSA464 | B | 251 DPL | ISP T7 HF-2 D10 | (BACKUP) Dispatch (Pesotum) | FMN | Law Dispatch |
Troop 8 - Collinsville (Metro East)
Calhoun, Greene, Jersey, Macoupin, Montgomery, Madison, Bond, St. Clair, Clinton, Monroe, and Washington Counties.
The primary function of Troopers in Troop 8 is to patrol interstates I-55, I-64, I-255, and I-270, State Routes, and US Highways.
155.37 CSQ, Point-to-Point is for communications with Missouri Law agencies in St Louis area
155.475 D156 on transmit for broadcasts. Unsure if remote towers are using the tone when patched. (5/26)
| STARCOM21 Statewide Illinois Project 25 Phase II | Troop 8 dispatchers can communicate with Madison County PSAPs on talkgroup 7323, or with St Clair County PSAPs on talkgroup 7006 |
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 155.505 | KA5825 | M | 132 NAC | ISP T8 DVRS A | Mobile Extenders-to-SC21 | P25 | Law Dispatch |
| 151.160 | KA2864 | M | 204 NAC | ISP T8 DVRS B | Mobile Extenders (to SC21) | P25 | Law Dispatch |
| 151.160 | KA2864 | M | 240 NAC | ISP T8 DVRS C | Mobile Extenders (to SC21) (Scale) | P25 | Law Dispatch |
| 154.665 | KSB235 | B | 306 DPL | ISP T8 HF-2 D11 | (BACKUP) to STARCOM21 [HF-2] Collinsville/D11 | FMN | Law Dispatch |
| 155.370 | KSB235 | B | CSQ | ISP-MO Pt-to-Pt | Point-to-Point {Link to St Louis / MO State} | FMN | Law Talk |
| 155.445 | WQEP339 | BM | 516 DPL | ISP T8 HF-2 D18 | (BACKUP) to STARCOM21 [HF-2] Litchfield/D18 | FMN | Law Dispatch |
| 953.950 | WQAX857 | F | ISP T8 MW BvrDam | Microwave Link: Nilwood-to-Beaver Dam | Telm | Data | |
| 957.550 | WQAX855 | F | ISP T MW Nilwood | Microwave Link: Beaver Dam-to-Nilwood | Telm | Data |
Troop 9 - Effingham
Cumberland, Clark, Fayette, Effingham, Jasper, Crawford, Marion, Clay, Richland, Lawrence, Wayne, Edwards, Wabash, Hamilton, and White Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.680 | KSB236 | B | 315 DPL | ISP D12 HF2A | (BACKUP) District 12: Alerts / Broadcasts EFFINGHAM | FMN | Law Dispatch |
| 154.680 | KSB236 | B | 412 DPL | ISP D12 HF2B | (BACKUP) District 12: Alerts / Broadcasts EFFINGHAM | FMN | Law Dispatch |
| 154.920 | KSI983 | B | 624 DPL | ISP D19 HF-2 | (BACKUP) Alerts CARMI | FMN | Law Dispatch |
Troop 10 - Carbondale
Jefferson, Randolph, Perry, Franklin, Jackson, Williamson, Saline, Gallatin, Union, Johnson, Pope, Hardin, Alexander, Pulaski and Massac Counties.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.935 | KSB234 | B | 371 DPL | ISP D13 Alert | (BACKUP) District 13: Alerts / Broadcasts [HF-2] (was D413) DuQUOIN | FMN | Law Dispatch |
| 155.505 | KA5825 | M | 173 NAC | ISP D13 VHF MX | (BACKUP) Mobile Extenders (to SC21) (*former DuQuoin D13) | P25 | Law Dispatch |
| 154.680 | KSG291 | BM | 754 DPL | ISP D22 HF-2 | (BACKUP) District 22: Alerts / Broadcasts | FMN | Law Dispatch |
Troop 15 - Tollway (Downers Grove)
Troop 15 (formerly District 15) has been disbanded. Troops 1 and 3 are now patroling the tollways in their respective jurisdictions. (1/5/25)
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.695 | KSB989 | BM | ISP D15 A2 | District 2 (A2) | FMN | Deprecated | |
| 154.935 | KSB242 | BM | ISP D15 A3 | District 3 (A3) | FMN | Deprecated | |
| 154.680 | KSB233 | BM | ISP D15 A4 | District 4 (A4) | FMN | Deprecated | |
| 154.920 | KA5825 | BM | ISP D15 A5 | District 5 (A5) | FMN | Deprecated | |
| 155.520 | BM | ISP D15 A6 | District 16 (A-6) [No License] | FMN | Deprecated | ||
| 154.650 | KA5825 | M | 754 DPL | ISP D15c2cB4 | Car-to-Car (B4) | FMN | Deprecated |
Department of Criminal Investigations (DCI)
| STARCOM21 Statewide Illinois Project 25 Phase II | Most comms are on encrypted talkgroups. Dispatch will be heard on Troop talkgroups. VHF use is unknown (2025) |
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 154.905 | KA5825 | M | CSQ | ISP DCI HF-2 | Operations [HF-2] | FMN | Law Tac |
| 154.950 | KA5825 | M | CSQ | ISP DCI HF-3 | Operations [HF-3] | FMN | Law Tac |
| 154.710 | KA5825 | M | CSQ | ISP DCI 4.71 | Operations | FMN | Law Tac |
| 154.920 | KA5825 | M | CSQ | ISP DCI 4.92 | Operations | FMN | Law Tac |
Illinois Public Safety Agency Network
formerly licensed as Illinois Criminal Justice Information Authority
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 857.7375 | WQME309 | RM | IPSAN Flora | Mobile Terminal Data - Flora (Clay) (CW-ID) | Telm | Data | |
| 859.7625 | WQME309 | RM | IPSAN Lakewd | Mobile Terminal Data - Lakewood (Shelby) | Telm | Data | |
| 855.4625 | WQCP383 | RM | IPSAN Marion | Mobile Terminal Data - Marion (Jefferson) (CSQ) | Telm | Data | |
| 858.4625 | WQME309 | RM | IPSAN Newton | Mobile Terminal Data - Newton (Jasper) | Telm | Data | |
| 857.7375 | WNXS419 | RM | IPSAN Pesotm | Mobile Terminal Data - Pesotum (Champaign) | Telm | Data | |
| 856.0625 | WQME309 | RM | IPSAN Rochel | Mobile Terminal Data - Rochelle (Ogle) | Telm | Data | |
| 855.9625 | WPMF678 | RM | ISPAN Danvil | Mobile Terminal Data - Danville (Vermilion) | Telm | Data |
Other Law Enforcement
Secretary of State Police (ISSP)
| STARCOM21 Statewide Illinois Project 25 Phase II | Main Communications system |
Illinois Department of Natural Resources
See IDNR Page
| STARCOM21 Statewide Illinois Project 25 Phase II | Dispatch / Operations |