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Dempster Police Frequencies

We do not have frequencies listed specifically for Dempster in Hamlin County, South Dakota yet. Countywide channels for Hamlin County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Watertown (South Dakota State Radio System), about 15 miles away.

About Dempster Police Frequencies

  • Trunked radio systems that carry law-enforcement traffic here: South Dakota State Radio System: 3 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 Dempster, start with the Watertown site of South Dakota State Radio System, about 15 miles away. Its control channels: 157.89, 158.67 MHz.

Hamlin County channels that also cover Dempster

South Dakota State Radio System

AgencyDescriptionTalkgroupHexMode
Hamlin County SheriffSheriff 11300514D
Hamlin County SheriffHamlin County Sheriff – Dispatch1302516D
Hamlin County SheriffEMS131051eD

Nearest trunked radio sites

Distances are measured from the center of Dempster.

Watertown · South Dakota State Radio System
RFSS 1 · Site 41 (hex 29) · NAC 477 · about 15 mi away
Control 157.89, 158.67
Voice 158.01, 158.52
Toronto · South Dakota State Radio System
RFSS 1 · Site 34 (hex 22) · NAC 47F · about 16 mi away
Control 157.5, 157.845, 159.975
Voice 155.685, 160.335
Brookings · South Dakota State Radio System
RFSS 1 · Site 39 (hex 27) · NAC 475 · about 25 mi away
Control 157.92, 158.04
Voice 157.8, 158.61
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.