About Jefferson 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: STARCOM21 Statewide Illinois: 3 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 Jefferson, start with the Mount Carroll site of STARCOM21 Statewide Illinois, about 11 miles away. Its control channels: 852.8625, 853.9875 MHz.
Stephenson County channels that also cover Jefferson
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Stephenson County Sheriff | Dispatch Backup | 154.8750 In 156.0300 | 131.8 PL | FMN | KSA467 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Stephenson County Sheriff | Reserves | 154.7400 In 158.8800 | 82.5 PL | FMN | WQKU260 |
| Stephenson County Sheriff | ERT | 158.9100 In 154.7100 | 94.8 PL | FMN | NONE |
| Stephenson County Sheriff | Courthouse Bailiff | 158.9100 | 94.8 PL | FMN | NONE |
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Stephenson County Sheriff | Sheriff Vehicular Repeater VHF | 154.7100 | 156.7 PL | FMN | KSA467 |
| Stephenson County Sheriff Unconfirmed | Reserve – Old | 155.9250 In 159.2850 | 131.8 PL | FMN | WNGA345 |
| Stephenson County Sheriff | Sheriff Vehicular Repeater | 770.8938 In 800.9938 | FMN | WQLP920 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Stephenson County Sheriff | Jail | 155.6400 In 153.8150 | 131.8 PL | FMN | WPPC862 |
STARCOM21 Statewide Illinois
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Stephenson County Sheriff | Stephenson County Sheriff – Dispatch (Channel 1) | 1651 | 673 | D |
| Stephenson County Sheriff | Stephenson County Sheriff – Dispatch (Channel 2) | 1652 | 674 | D |
| Stephenson County Sheriff | Jail (Simulcast of 155.64 Jail Repeater?) | 1659 | 67b | D |
Nearest trunked radio sites
Distances are measured from the center of Jefferson.
Mount Carroll · STARCOM21 Statewide Illinois
RFSS 1 · Site 19 (hex 13) · NAC 143 · about 11 mi away
Control 852.8625, 853.9875
Voice 852.3375, 852.825, 855.2125, 855.3875, 857.0125
Lena · STARCOM21 Statewide Illinois
RFSS 1 · Site 21 (hex 15) · NAC 145 · about 11 mi away
Control 852.8875
Voice 852.3625, 853.4125, 853.4375
Stockton · STARCOM21 Statewide Illinois
RFSS 1 · Site 41 (hex 29) · NAC 145 · about 12 mi away
Control 852.8125, 853.3625, 853.9375
Voice 851.4875, 852.3125
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 Jefferson?
We do not have a dispatch channel listed specifically for Jefferson. County-level dispatch channels in the same county: Stephenson County Sheriff 154.8750 MHz (131.8 PL).