About Garden Prairie Police Frequencies
- 3 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: 9 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 Garden Prairie, start with the Boone County - Simulcast site of STARCOM21 Statewide Illinois, about 7 miles away. Its control channels: 853.3375, 853.5125, 853.8125 MHz.
- 9 listed entries are marked encrypted. No scanner can decode encrypted audio.
Boone County channels that also cover Garden Prairie
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Boone County Sheriff | Car-to-Car | 153.8600 | CSQ | FMN | WPUC914 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Boone County Sheriff | Jail | 155.2650 | 82.5 PL | FMN | WNYL568 |
| Boone County Sheriff | Courthouse – Automated Voice/Paging System | 155.3100 In 159.3450 | 131.8 PL | FMN | KSB330 |
STARCOM21 Statewide Illinois
9 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Boone County Sheriff | Boone County Sheriff – Dispatch | 1376 | 560 | D Encrypted |
| Boone County Sheriff | Sheriff/Rural Law/Belvidere Statewide | 1383 | 567 | D Encrypted |
| Boone County Sheriff | County | 1377 | 561 | D Encrypted |
| Boone County Sheriff | Boone County Sheriff – Tactical Channel | 1378 | 562 | D Encrypted |
| Boone County Sheriff | Boone County Sheriff – Tactical Channel | 1379 | 563 | D Encrypted |
| Boone County Sheriff | Rural Law City 5 – Special Details | 1380 | 564 | D Encrypted |
| Boone County Sheriff | Sheriff/Rural Law City 6 – Multi-Agency Operations | 1381 | 565 | D Encrypted |
| Boone County Sheriff | Sheriff/Rural Law City 7 – Multi-Agency Operations | 1382 | 566 | D Encrypted |
| Boone County Sheriff | Car-to-Car | 1386 | 56a | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Garden Prairie.
Boone County - Simulcast · STARCOM21 Statewide Illinois
RFSS 1 · Site 48 (hex 30) · NAC 141 · about 7 mi away
Control 853.3375, 853.5125, 853.8125
Voice 851.8875, 852.075, 852.3875
McHenry County - Simulcast · STARCOM21 Statewide Illinois
RFSS 1 · Site 46 (hex 2E) · NAC 140 · about 15 mi away
Control 851.35, 851.7375, 852.55, 853.0375
Voice 851.9625, 852.4125, 852.9125, 853.3125, 853.4375, 854.5375, 855.9875, 856.6625, 857.1125
Unidentified LCN · Rock Valley College (Rockford)
Site 101 (hex 65) · about 15 mi away
Voice 461.4375, 461.65, 463.4, 463.625
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.