About Chain of Rocks Police Frequencies
- 17 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
- 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.
- Trunked radio systems that carry law-enforcement traffic here: Missouri Statewide Wireless Interoperable Network (MOSWIN): 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 Chain of Rocks, start with the St Charles Co - Simulcast site of St. Louis Area Trunked Emergency Radio (SLATER), about 14 miles away. Its control channels: 853.5875, 853.625, 853.8625 MHz.
Lincoln County channels that also cover Chain of Rocks
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Central Dispatch | Central Dispatch – Dispatch(FUTURE) Former-Municipal Law Dispatch – East | 153.2900 In 158.9025 | 141.3 PL | FMN | WZZ284 |
| Central Dispatch Backup | Central Dispatch – Dispatch | 155.6700 In 154.7100 | NAC 400 | P25 | WZZ284 |
| Central Dispatch | Remote Link | 453.2375 | 110.9 PL | FMN | WZZ284 |
| Central Dispatch | Remote Link | 453.3875 | FMN | WZZ284 | |
| Central Dispatch | Remote Link | 453.6875 | FMN | WZZ284 | |
| Central Dispatch | Remote Link – Hawk Point | 460.0375 | FMN | WQCT672 | |
| Central Dispatch | Remote Link – Ellsberry | 460.0625 | FMN | WQCT672 | |
| Central Dispatch | Remote Link – Lincoln | 460.1500 | 114.8 PL | FMN | WZZ284 |
| Central Dispatch | Remote Link – Wright City | 460.2000 | 131.8 PL | FMN | WZZ284 |
| Central Dispatch | Remote Link – Olney (also 173.8?) | 460.3625 | 151.4 PL | FMN | WQCT672 |
| Central Dispatch | Remote Link – Silex | 460.4375 | FMN | WQCT672 | |
| Central Dispatch | Remote Link – Troy | 465.1500 | 162.2 PL | FMN | WZZ284 |
| Central Dispatch | Remote Link | 465.1500 | 114.8 PL | FMN | WZZ284 |
| Central Dispatch | Remote Link | 465.2000 | 100.0 PL | FMN | WZZ284 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Central Dispatch | County Fair Operations (Sheriff/County Fire/EMS) | 154.6800 | 156.7 PL | FMN | — |
| Central Dispatch | Private (100.0 TX) | 159.4575 | CSQ | FMN | WZZ284 |
| Central Dispatch | SWAT Tactical | 159.4575 | 192.8 PL | FMN | WZZ284 |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Central Dispatch | Jail | 154.7700 | 173.8 PL | FMN | — |
Missouri Statewide Wireless Interoperable Network (MOSWIN)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Lincoln County Sheriff | Lincoln County Sheriff – Dispatch (Central")" | 5304 | 14b8 | D |
| Lincoln County Sheriff | Muni Law East – Dispatch – Future | 5310 | 14be | D |
| Lincoln County Sheriff | Muni Law South – Dispatch – Future | 5312 | 14c0 | D |
| Lincoln County Sheriff | Muni Law West – Dispatch – Future | 5314 | 14c2 | D |
Nearest trunked radio sites
Distances are measured from the center of Chain of Rocks.
St Charles Co - Simulcast · St. Louis Area Trunked Emergency Radio (SLATER)
RFSS 1 · Site 3 (hex 3) · NAC 4F3 · about 14 mi away
Control 853.5875, 853.625, 853.8625, 853.975
Voice 851.0625, 851.0875, 851.2125, 851.2375, 851.4, 851.4625, 851.5375, 851.6875, 851.7625, 852.1, 852.5625, 852.7625, 852.8, 853.3375, 853.3625
New Hope · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 3 · Site 29 (hex 1D) · NAC 1C9 · about 15 mi away
Control 169.6625, 171.3875
Voice 151.3025, 152.54, 152.75, 169.8875
Weldon Spring · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 3 · Site 16 (hex 10) · NAC 1C2 · about 16 mi away
Control 152.66, 154.695
Voice 152.03, 152.165, 152.51
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.