About Lee County Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: STARCOM21 Statewide Illinois: 4 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 Lee County, start with the Ashton site of STARCOM21 Statewide Illinois. Its control channels: 852.2125, 853.1875, 853.8375 MHz.
- 3 listed entries are marked encrypted. No scanner can decode encrypted audio.
Lee County trunked talkgroups
STARCOM21 Statewide Illinois
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Lee County Sheriff | Info/Warrants | 1080 | 438 | D |
3 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Lee County Sheriff | Patrol | 1077 | 435 | D Encrypted |
| Lee County Sheriff | Tactical Response Team (TRT) | 1079 | 437 | D Encrypted |
| Lee County Sheriff | Car-to-Car | 1081 | 439 | D Encrypted |
Radio system sites in Lee County
Program the control channel first; your scanner finds the voice channels from it.
Ashton · STARCOM21 Statewide Illinois
RFSS 1 · Site 5 (hex 5) · NAC 14A
Control 852.2125, 853.1875, 853.8375
Voice 854.1375
Dixon CC · STARCOM21 Statewide Illinois
RFSS 1 · Site 53 (hex 35) · NAC 140
Control 856.7125, 857.7125, 858.7125
Voice 853.4625, 855.7125
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.
Cities & communities in Lee County
Common questions
Are Lee County police talkgroups encrypted?
3 of the 4 talkgroups listed for Lee County are marked fully or partly encrypted; a scanner cannot decode encrypted audio.