About Clinton Police Frequencies
- 4 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: DeKalb County Public Safety: 13 talkgroups; STARCOM21 Statewide Illinois: 1 talkgroup. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For Clinton, start with the Simulcast site of DeKalb County Public Safety, about 9 miles away. Its control channels: 769.83125, 770.30625, 771.50625 MHz.
- 4 listed entries are marked encrypted. No scanner can decode encrypted audio.
DeKalb County channels that also cover Clinton
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| DeKalb County Sheriff | Fire – Backup (Channel 2) / Law – Backup to SC21 | 154.8600 In 155.9700 | 141.3 PL | FMN | WPXU646 |
| Operations | Campus Police | 453.6000 In 458.6000 | 162.2 PL | FMN | WNGN215 |
| Operations | Campus Operations | 453.6000 In 458.6000 | 162.2 PL | FMN | KNGJ627 |
| Operations | Transportation | 453.8750 In 458.8750 | 141.3 PL | FMN | — |
DeKalb County Public Safety
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| County Law | NIU Police – Dispatch | 115 | 73 | T |
| County Law | County Law – Dispatch | 148 | 94 | T |
| County Law | County Law – Alternate | 174 | ae | T |
| DeKalb County Sheriff | ISPERN/Chicago Priority Patch | 83 | 53 | T |
| Local | Cortland Local/Citywide | 23 | 17 | T |
| Local | Kirkland Local/Citywide | 104 | 68 | T |
| Local | Somonauk Local/Citywide | 154 | 9a | T |
| Local | Sycamore Local | 177 | b1 | T |
| Local | Waterman Local | 189 | bd | T |
4 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| County Law | Events | 32 | 20 | T Encrypted |
| County Law | Countywide Law – Tactical | 179 | b3 | T Encrypted |
| County Law | Car-to-Car | 33 | 21 | T Encrypted |
| County Law | Corrections – Main | 84 | 54 | T Encrypted |
STARCOM21 Statewide Illinois
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| DeKalb County Sheriff | Northern Illinois University – Police/Public Safety | 3571 | df3 | D |
Nearest trunked radio sites
Distances are measured from the center of Clinton.
Simulcast · DeKalb County Public Safety
RFSS 1 · Site 1 (hex 1) · NAC 890 · about 9 mi away
Control 769.83125, 770.30625, 771.50625, 771.83125, 772.10625
Voice 772.43125
DeKalb - City · STARCOM21 Statewide Illinois
RFSS 1 · Site 47 (hex 2F) · NAC 144 · about 10 mi away
Control 851.55, 851.8, 852.6
Voice 851.2, 854.3875, 854.9875, 856.4875
Creston · STARCOM21 Statewide Illinois
RFSS 1 · Site 36 (hex 24) · NAC 149 · about 14 mi away
Control 773.15625, 773.56875, 774.59375
Voice 770.16875, 773.73125, 774.81875
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 Clinton?
We do not have a dispatch channel listed specifically for Clinton. County-level dispatch channels in the same county: DeKalb County Sheriff 154.8600 MHz (141.3 PL).