About St. Mary Police Frequencies
- 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.
Glacier County channels that also cover St. Mary
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Glacier County Sheriff | Glacier County Sheriff – Dispatch | 155.0100 In 155.8500 | NAC C38 | P25 | WNGN962 |
Nearest trunked radio sites
Distances are measured from the center of St. Mary.
Divide Mountain · Montana Public Safety Communications System
RFSS 1 · Site 17 (hex 11) · about 5 mi away
Control 151.085, 161.8875
Voice 151.385, 154.74
Desert Mountain · Montana Public Safety Communications System
RFSS 1 · Site 42 (hex 2A) · NAC 160 · about 33 mi away
Control 154.665, 155.025
Voice 154.13, 156.195
Columbia Falls · Montana Public Safety Communications System
RFSS 1 · Site 46 (hex 2E) · NAC 166 · about 43 mi away
Control 153.785, 154.815, 154.875
Voice 155.01
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 St. Mary?
We do not have a dispatch channel listed specifically for St. Mary. County-level dispatch channels in the same county: Glacier County Sheriff 155.0100 MHz (NAC C38).