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Madison Police Frequencies

We do not have frequencies listed specifically for Madison 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 Bowdle (South Dakota State Radio System), about 14 miles away.

About Madison 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 Madison, start with the Bowdle site of South Dakota State Radio System, about 14 miles away. Its control channels: 159.51, 159.87 MHz.

Edmunds County channels that also cover Madison

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 Madison.

Bowdle · South Dakota State Radio System
RFSS 1 · Site 7 (hex 7) · NAC 477 · about 14 mi away
Control 159.51, 159.87
Voice 156.225, 159.045
Lowry · South Dakota State Radio System
RFSS 1 · Site 27 (hex 1B) · about 22 mi away
Control 159, 159.33, 159.81
Voice 160.155
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.