Frequencies
Illinois State Toll Highway Authority (ISTHA)
Mutual Aid
UHF National Interoperability (Repeaters located at all multiple sites, see the WIKI) 453.2125, 453.4625, 453.71725, 458.8625 (all 156.7) WQJE848
Other Operations
* Possibly a back-up to STARCOM21 for Tollway operations? Go here to view STARCOM21 talkgroups. (11/25)
* Check 855.7375 in western portions of the system for activity. (2/26)
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 855.9625 | KUO990 | RM | 293 NAC | Tollway A North | Tollway A North / Tollway North Simulcast | P25 | Public Works |
| 856.9875 | KUO990 | RM | 293 NAC | Tollway B? South | Tollway South Simulcast | P25 | Public Works |
Patrol
* Formerly handled by Illinois State Police Troop 15 (now non-existant), Tollway patrol operations have now been assumed by Troops 1 (Boone, Lee, Ogle, Whiteside and Winnebago Counties) and 3 (Cook, DuPage, DeKalb, Kane, Lake, McHenry and Will Counties). (1/25)
* It is believed that the conventional repeaters shown below are likely no longer in service.
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 854.9875 | KQM631 | RM | 043 DPL | ISTHA F-1 | North: Belvidere, Park Ridge, Gurnee (Boone County) {input D114} | FMN | Law Tac |
| 855.2375 | RM | 043 DPL | ISTHA F-2 | North: Elgin, Deerfield, South Beloit {input D043} | FMN | Law Tac | |
| 855.4875 | RM | 165 DPL | ISTHA F-3 | South: Rochelle, Alsip, Naperville {input D174} | FMN | Law Tac | |
| 855.7375 | RM | 165 DPL | ISTHA F-4 | South: DeKalb, Dixon, Markham, Westchester {input D174} | FMN | Law Tac | |
| 855.9625 | KQM631 | RM | 043 DPL | ISTHA F-5 | North: Arlington Heights (along I-90) {input D114} | FMN | Law Tac |
| 855.9625 | KQM631 | RM | 245 DPL | ISTHA F-6 | unknown area {input D306} | FMN | Law Tac |
| 855.9625 | KQM631 | RM | 263 DPL | ISTHA F-7 | South: Lisle {input D331} | FMN | Law Tac |
| 855.9625 | KQM631 | M | 251 DPL | ISTHA F-8 | Car-to-Car | FMN | Law Tac |
| 866.1625 | KQM631 | RM | 023 DPL | ISTHA F-9 | North: Lisle {input same} | FMN | Law Tac |
| 866.1625 | WPXD331 | RM | 023 DPL | ISTHA DwnrsGrove | Downers Grove (Wide Area range) | FMN | Law Tac |
| 866.1625 | WQBU735 | RM | 023 DPL | ISTHA Lisle Ptrl | Lisle Patrol | FMN | Law Tac |
Maintenance
| Frequency | License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|
| 855.9875 | WQBB432 | RM | 364 DPL | ITHA F1 | North: Belvidere, Gurnee, Park Ridge (@ Belvidere, Boone Co) {input DCS 412} | FMN | Public Works |
| 856.2375 | KSG358 | RM | 364 DPL | ITHA F2 | North: Deerfield, Elgin, South Beloit {input DCS 412} | FMN | Public Works |
| 811.4875 | KSN40 | F | 412 DPL | ITHA (F2) | fixed input base to F-3 | FMN | Public Works |
| 856.4875 | KUO990 | RM | 423 DPL | ITHA F3 | South: Alsip, Naperville, Rochelle {input DCS 465} | FMN | Public Works |
| 856.7375 | KUO988 | RM | 423 DPL | ITHA F4 | South: DeKalb, Dixon, Markham, Westchester {input DCS 465} | FMN | Public Works |
| 856.9875 | WPSR815 | RM | 364 DPL | ITHA F5 | North: Arlington Heights {input DCS 412} | FMN | Public Works |
| 856.9875 | WPSR815 | RM | 532 DPL | ITHA F6 | unknown location {input DCS 624} | FMN | Public Works |
| 856.9875 | WPSR815 | RM | 662 DPL | ITHA F7 | South: Lisle {input DCS 703} | FMN | Public Works |
| 856.9875 | WPSR815 | M | 723 DPL | ITHA F8 U2U | Unit-to-Unit [F-8] | FMN | Public Works |
| 868.5125 | WPXD331 | RM | 023 DPL | ITHA DGrove | Downers Grove | FMN | Public Works |
| 868.5125 | WQBU735 | RM | 023 DPL | ITHA Lisle | Lisle | FMN | Public Works |
| 914.900 | F | ITHA I-PASS | I-PASS Transponder Data (Chicago) | Telm | Data |