About Butte Police Frequencies
- Trunked radio systems that carry law-enforcement traffic here: South Dakota State Radio System: 1 talkgroup. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For Butte, start with the White River site of South Dakota State Radio System, about 16 miles away. Its control channels: 156.15, 159.195, 159.435 MHz.
Mellette County channels that also cover Butte
South Dakota State Radio System
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Mellette County Sheriff | Mellette County Sheriff – Dispatch | 933 | 3a5 | D |
Nearest trunked radio sites
Distances are measured from the center of Butte.
White River · South Dakota State Radio System
RFSS 1 · Site 17 (hex 11) · NAC 470 · about 16 mi away
Control 156.15, 159.195, 159.435
Voice 159.705
Winner · South Dakota State Radio System
RFSS 1 · Site 46 (hex 2E) · about 29 mi away
Control 155.565, 156.1125, 157.77
Voice 158.49
Murdo · South Dakota State Radio System
RFSS 1 · Site 29 (hex 1D) · NAC 470 · about 35 mi away
Control 155.73, 159.6
Voice 155.445, 159.345
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.