About Lake Carroll Police Frequencies
- 8 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
- Trunked radio systems that carry law-enforcement traffic here: Federal Correctional Institution, Thomson: 7 talkgroups; STARCOM21 Statewide Illinois: 8 talkgroups. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For Lake Carroll, start with the Mount Carroll site of STARCOM21 Statewide Illinois, about 6 miles away. Its control channels: 852.8625, 853.9875 MHz.
- 7 listed entries are marked encrypted. No scanner can decode encrypted audio.
Carroll County channels that also cover Lake Carroll
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Carroll County Sheriff Backup | Carroll County Sheriff – Dispatch | 155.6700 In 159.0450 | 192.8 PL | FMN | KIC390 |
| Carroll County Sheriff | Auxiliary | 158.9250 | FMN | WPDH570 | |
| Carroll County Sheriff Backup | Remote Link (Savanna – FX2) | 453.7250 | FMN | KIC390 | |
| Carroll County Sheriff Backup | Remote Link (Mount Carroll – FX1) | 458.7250 | 662 DPL | FMN | KIC390 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Carroll County Sheriff | Low Band | 39.5000 | CSQ | FM | KSB256 |
| Carroll County Sheriff | Low Band | 39.6600 | CSQ | FM | KSB256 |
| Carroll County Sheriff Backup | Mobile | 156.0900 | FMN | KIC390 | |
| Carroll County Sheriff Backup | Mobile Extenders ? | 460.3750 | FMN | KIC390 |
Federal Correctional Institution, Thomson
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| All | Cell Door Opening/Closing | 6 | 6 | D |
| All | Administration | 9 | 9 | D |
| All | Zone Movement (Hall/Bldg-to-Bldg) | 10 | a | D |
| All | Operations | 12 | c | D |
| All | Operations | 13 | d | D |
| All | Operations | 14 | e | D |
| All | Daily Counts | 19 | 13 | D |
STARCOM21 Statewide Illinois
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Carroll County Sheriff | Carroll County Sheriff – Dispatch | 3908 | f44 | D |
7 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Carroll County Sheriff | Carroll County Sheriff – Tactical Channel | 3909 | f45 | D Encrypted |
| Carroll County Sheriff | Incident West | 3910 | f46 | D Encrypted |
| Carroll County Sheriff | Incident East | 3911 | f47 | D Encrypted |
| Carroll County Sheriff | Operations | 3912 | f48 | D Encrypted |
| Carroll County Sheriff | Operations | 3913 | f49 | D Encrypted |
| Carroll County Sheriff | Operations | 3914 | f4a | D Encrypted |
| Carroll County Sheriff | Critical Incident Response Team (CIRT) | 3915 | f4b | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Lake Carroll.
Mount Carroll · STARCOM21 Statewide Illinois
RFSS 1 · Site 19 (hex 13) · NAC 143 · about 6 mi away
Control 852.8625, 853.9875
Voice 852.3375, 852.825, 855.2125, 855.3875, 857.0125
Forreston · STARCOM21 Statewide Illinois
RFSS 1 · Site 24 (hex 18) · NAC 14F · about 15 mi away
Control 857.2125, 859.2125
Voice 856.2125, 858.2125
Freeport · STARCOM21 Statewide Illinois
RFSS 1 · Site 12 (hex C) · NAC 142 · about 15 mi away
Control 851.5875
Voice 851.0875, 852.125, 853.075, 853.725
What do these numbers mean?
- Control channel
- The frequency your scanner listens to first. It tells the scanner where each voice call is happening, so program it before anything else.
- Voice
- The other frequencies the site uses for calls. A trunking scanner follows them automatically once it has the control channel.
- Site
- One tower location of the system. Scanners show the number in decimal or hex, so both are listed.
- RFSS (Radio Frequency Sub-System)
- A group of sites run by the same controller. Large Project 25 systems can have several.
- NAC (Network Access Code)
- A hex code the site transmits. Your scanner can use it to ignore other systems on the same frequency.
- Talkgroup
- A virtual channel on a trunked system, such as one agency’s dispatch. Programming uses the decimal or hex number, depending on your scanner.
Common questions
What frequency do the police use in Lake Carroll?
We do not have a dispatch channel listed specifically for Lake Carroll. County-level dispatch channels in the same county: Carroll County Sheriff 158.9250 MHz.