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Madison Police Frequencies

We do not have frequencies listed specifically for Madison in Mercer County, Missouri yet. Countywide channels for Mercer County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Princeton (Missouri Statewide Wireless Interoperable Network (MOSWIN)), about 11 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. 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 Princeton site of Missouri Statewide Wireless Interoperable Network (MOSWIN), about 11 miles away. Its control channels: 161.925, 169.65 MHz.

Mercer County channels that also cover Madison

Tactical

AgencyDescriptionFrequency (MHz)ToneModeFCC
Mercer County SheriffSheriff – (Scrambled)155.6250FMNKAL650

Missouri Statewide Wireless Interoperable Network (MOSWIN)

AgencyDescriptionTalkgroupHexMode
Mercer County SheriffMercer County Sheriff – Dispatch288037083D

Nearest trunked radio sites

Distances are measured from the center of Madison.

Princeton · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 5 · Site 14 (hex E) · NAC 1C7 · about 11 mi away
Control 161.925, 169.65
Voice 154.995, 155.685, 161.8375
Trenton 700 · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 5 · Site 27 (hex 1B) · NAC 1C2 · about 16 mi away
Control 773.03125, 773.28125
Voice 773.53125, 773.78125, 774.03125, 774.28125
Eagleville · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 5 · Site 12 (hex C) · NAC 1C0 · about 16 mi away
Control 154.935, 161.95
Voice 154.6875, 155.565, 161.8625
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.