About Chalk Level Police Frequencies
- 1 conventional channel is analog FM, so any scanner can receive it. 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): 5 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 Chalk Level, start with the Deepwater site of Missouri Statewide Wireless Interoperable Network (MOSWIN), about 8 miles away. Its control channels: 154.6875, 169.775 MHz.
St. Clair County channels that also cover Chalk Level
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| St. Clair County Sheriff | Operations | 155.7600 In 153.8075 | 127.3 PL | FMN | WSBS639 |
| St. Clair County Sheriff | St. Clair County Sheriff – Dispatch | 159.1950 In 155.6775 | NAC 200 | P25 | WSBS639 |
Missouri Statewide Wireless Interoperable Network (MOSWIN)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| St. Clair County Sheriff | All (limited use by Sheriff) | 30801 | 7851 | D |
| St. Clair County Sheriff | Main | 30803 | 7853 | D |
| St. Clair County Sheriff | Operations | 30805 | 7855 | D |
| St. Clair County Sheriff | Car-to-Car | 30804 | 7854 | D |
| St. Clair County Sheriff | Travel (Prisoner Transport Vans) | 30802 | 7852 | D |
Nearest trunked radio sites
Distances are measured from the center of Chalk Level.
Deepwater · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 5 · Site 3 (hex 3) · NAC 1CC · about 8 mi away
Control 154.6875, 169.775
Voice 159.21, 169.8875, 171.3875
Osceola 700 · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 1 · Site 57 (hex 39) · NAC 1C6 · about 9 mi away
Control 773.06875, 773.31875
Voice 773.56875, 773.81875, 774.06875, 774.31875
Cedar Springs 700 · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 1 · Site 90 (hex 5A) · NAC 1CA · about 20 mi away
Control 769.19375, 769.44375
Voice 769.69375, 769.94375, 770.19375, 770.44375
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 Chalk Level?
We do not have a dispatch channel listed specifically for Chalk Level. County-level dispatch channels in the same county: St. Clair County Sheriff 155.7600 MHz (127.3 PL); St. Clair County Sheriff 159.1950 MHz (NAC 200).