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Union Police Frequencies

We do not have frequencies listed specifically for Union in Edmunds County, South Dakota yet. Countywide channels for Edmunds County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Aberdeen (South Dakota State Radio System), about 19 miles away.

About Union Police Frequencies

  • 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 Union, start with the Aberdeen site of South Dakota State Radio System, about 19 miles away. Its control channels: 156.15, 157.275, 159.375 MHz.

Edmunds County channels that also cover Union

South Dakota State Radio System

AgencyDescriptionTalkgroupHexMode
Edmunds County SheriffLaw 11047417D
Edmunds County SheriffLaw 21042412D
Edmunds County SheriffLaw 41048418D
Edmunds County SheriffLaw 3105141bD

Nearest trunked radio sites

Distances are measured from the center of Union.

Aberdeen · South Dakota State Radio System
RFSS 1 · Site 1 (hex 1) · about 19 mi away
Control 156.15, 157.275, 159.375
Voice 159.225
Leola · South Dakota State Radio System
RFSS 1 · Site 54 (hex 36) · NAC 473 · about 23 mi away
Control 157.77, 157.86, 158.61
Voice 158.7
Orient Hills · South Dakota State Radio System
RFSS 1 · Site 47 (hex 2F) · about 35 mi away
Control 158.49, 158.64
Voice 157.83, 157.95
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.