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Madison Police Frequencies

We do not have frequencies listed specifically for Madison in Monroe County, Missouri yet. Countywide channels for Monroe County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Renick / Clark (Missouri Statewide Wireless Interoperable Network (MOSWIN)), about 14 miles away.

About Madison Police Frequencies

  • 1 conventional channel is analog FM, so any scanner can receive it. Enter the frequency and set the tone shown in the table.
  • Trunked radio systems that carry law-enforcement traffic here: Missouri Statewide Wireless Interoperable Network (MOSWIN): 1 talkgroup; STARCOM21 Statewide Illinois: 12 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 Renick / Clark site of Missouri Statewide Wireless Interoperable Network (MOSWIN), about 14 miles away. Its control channels: 155.355, 171.2625 MHz.
  • 4 listed entries are marked encrypted. No scanner can decode encrypted audio.

Monroe County channels that also cover Madison

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Monroe County Sheriff BackupMonroe County Sheriff – Dispatch (DB – 911)154.4000
In 150.8050
162.2 PLFMNWPPA507

Missouri Statewide Wireless Interoperable Network (MOSWIN)

AgencyDescriptionTalkgroupHexMode
Monroe County SheriffMonroe County Sheriff – Dispatch2910571b1D

STARCOM21 Statewide Illinois

AgencyDescriptionTalkgroupHexMode
Monroe County SheriffMonroe County Sheriff – Dispatch79941f3aD
Monroe County SheriffColumbia Police – Dispatch / EMS – Dispatch79951f3bD
Monroe County Sheriff OldWaterloo Police – Dispatch79971f3dD
Monroe County SheriffColumbia Police – Emergency Button Trigger841320ddD
Monroe County SheriffOperations 799679961f3cD
Monroe County SheriffOperations 799879981f3eD
Monroe County SheriffEmergency Button Trigger (EBT)80041f44D
Monroe County SheriffOperations 8411841120dbD
4 encrypted talkgroups (cannot be monitored)
AgencyDescriptionTalkgroupHexMode
Monroe County SheriffSheriff / Valmyer Police – Dispatch79931f39D
Monroe County SheriffWaterloo Police – Dispatch (New)290087150D
Monroe County SheriffColumbia Police – Operations841220dcD
Monroe County SheriffSecure841820e2D

Nearest trunked radio sites

Distances are measured from the center of Madison.

Renick / Clark · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 1 · Site 37 (hex 25) · NAC 1CA · about 14 mi away
Control 155.355, 171.2625
Voice 154.92, 155.1375, 169.6625
Stoutsville 700 · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 1 · Site 42 (hex 2A) · NAC 1C2 · about 21 mi away
Control 769.18125, 769.43125, 770.93125, 774.05625
Voice 769.93125, 770.18125, 773.55625
Macon · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 1 · Site 40 (hex 28) · NAC 1CB · about 24 mi away
Control 155.1975, 156.1875
Voice 154.3475, 154.785, 169.8875, 170.4625
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.