About Prairie Police Frequencies
- 2 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: South Dakota State Radio System: 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 Prairie, start with the Beresford site of South Dakota State Radio System, about 3 miles away. Its control channels: 157.325, 159.465 MHz.
- 2 listed entries are marked encrypted. No scanner can decode encrypted audio.
Union County channels that also cover Prairie
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Union County Sheriff | Union County Sheriff – Dispatch | 154.4150 In 153.7700 | 151.4 PL | FM | WPDJ209 |
Talk-around & Car-to-Car
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| Union County Sheriff | Sheriff Mobile Extenders | 458.3375 | 103.5 PL | FM | WPYT284 |
South Dakota State Radio System
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Union County Sheriff | Law 2 | 1347 | 543 | D |
| Union County Sheriff | Law 3 | 1348 | 544 | D |
2 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Union County Sheriff | Union County Sheriff – Dispatch | 1345 | 541 | D Encrypted |
| Union County Sheriff | Law 1 | 1346 | 542 | D Encrypted |
Nearest trunked radio sites
Distances are measured from the center of Prairie.
Beresford · South Dakota State Radio System
RFSS 1 · Site 52 (hex 34) · NAC 471 · about 3 mi away
Control 157.325, 159.465
Voice 157.785, 158.175
Vermillion · South Dakota State Radio System
RFSS 1 · Site 35 (hex 23) · NAC 473 · about 19 mi away
Control 157.2, 159.285
Voice 157.2875, 157.3875
Yankton FPC · Federal Prison Camp Yankton
RFSS 1 · Site 1 (hex 1) · NAC 8D0 · about 34 mi away
Control 407.0125, 408.25, 409.4125, 410.2
Voice 410.4
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 Prairie?
We do not have a dispatch channel listed specifically for Prairie. County-level dispatch channels in the same county: Union County Sheriff 154.4150 MHz (151.4 PL).