About Cherry Grove-Shannon 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 Cherry Grove-Shannon, start with the Mount Carroll site of STARCOM21 Statewide Illinois, about 8 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 Cherry Grove-Shannon
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 Cherry Grove-Shannon.
Mount Carroll · STARCOM21 Statewide Illinois
RFSS 1 · Site 19 (hex 13) · NAC 143 · about 8 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 10 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 13 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 Cherry Grove-Shannon?
We do not have a dispatch channel listed specifically for Cherry Grove-Shannon. County-level dispatch channels in the same county: Carroll County Sheriff 158.9250 MHz.