About Prairie Lake 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.
- Trunked radio systems that carry law-enforcement traffic here: Allied Radio Matrix for Emergency Response (ARMER): 13 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 Prairie Lake, start with the Cromwell site of Allied Radio Matrix for Emergency Response (ARMER), about 11 miles away. Its control channels: 854.1125 MHz.
- 7 listed entries are marked encrypted. No scanner can decode encrypted audio.
St. Louis County channels that also cover Prairie Lake
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Medical Support / Treatment Facilities | Mesabi Academy / Juv. Treatment | 154.5150 In 159.9600 | FMN | WPNU881 |
Allied Radio Matrix for Emergency Response (ARMER)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| St. Louis County Sheriff | Law Dispatch 1 – South | 37801 | 93a9 | D |
| St. Louis County Sheriff | Law Dispatch 2 – North | 37802 | 93aa | D |
| St. Louis County Sheriff | Law Dispatch 3 – Duluth Police Department | 37803 | 93ab | D |
| St. Louis County Sheriff | Law Dispatch 4 – Alternate/Special Projects | 37804 | 93ac | D |
| St. Louis County Sheriff | Countywide Info Channel | 37812 | 93b4 | D |
| St. Louis County Sheriff | Countywide Alternate Info – Talkaround/Special Projects | 37813 | 93b5 | D |
7 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| St. Louis County Sheriff | Duluth Law Tactical | 37604 | 92e4 | D Encrypted |
| St. Louis County Sheriff | Countywide | 37805 | 93ad | D Encrypted |
| St. Louis County Sheriff | Countywide | 37806 | 93ae | D Encrypted |
| St. Louis County Sheriff | County Tactical 37815 | 37815 | 93b7 | D Encrypted |
| St. Louis County Sheriff | County Law Tactical | 37833 | 93c9 | D Encrypted |
| St. Louis County Sheriff | University of Minnesota Duluth Police Tactical | 37837 | 93cd | D Encrypted |
| St. Louis County Sheriff | Sheriff Administration | 37809 | 93b1 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Prairie Lake.
Cromwell · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 5 · Site 68 (hex 44) · NAC 401 · about 11 mi away
Control 854.1125
Voice 854.4125, 854.6875, 856.0875, 857.0125
McGregor · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 5 · Site 9 (hex 9) · NAC 40B · about 12 mi away
Control 851.9, 852.9125
Voice 852.4, 858.2375, 858.9625
Brookston · Allied Radio Matrix for Emergency Response (ARMER)
RFSS 5 · Site 32 (hex 20) · about 14 mi away
Control 851.475, 859.4375
Voice 852.975, 855.2125, 857.2125
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.