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Mathias Police Frequencies

We do not have frequencies listed specifically for Mathias in Alger County, Michigan yet. Countywide channels for Alger County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Rapid River (Michigan's Public Safety Communications System (MPSCS)), about 6 miles away.

About Mathias Police Frequencies

  • 2 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
  • Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 2 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 Mathias, start with the Rapid River site of Michigan's Public Safety Communications System (MPSCS), about 6 miles away. Its control channels: 852.4125, 853.4 MHz.
  • 1 listed entry is marked encrypted. No scanner can decode encrypted audio.

Alger County channels that also cover Mathias

Jails & Corrections

AgencyDescriptionFrequency (MHz)ToneModeFCC
Michigan StatePrison155.9250FMNWNSQ995
Michigan StatePrison158.7900
In 153.9650
107.2 PLFMNWPME490

Michigan's Public Safety Communications System (MPSCS)

AgencyDescriptionTalkgroupHexMode
Alger County SheriffAlger County Sheriff – Dispatch506113c5D
1 encrypted talkgroup (cannot be monitored)
AgencyDescriptionTalkgroupHexMode
Alger County SheriffCounty Narcotics Enforcement60221786D

Nearest trunked radio sites

Distances are measured from the center of Mathias.

Rapid River · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 13 (hex D) · NAC 796 · about 6 mi away
Control 852.4125, 853.4
Voice 851.4375, 851.925, 854.0125
Sundel · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 23 (hex 17) · NAC 79A · about 14 mi away
Control 853.3875, 853.825
Voice 851.2875, 851.4875, 851.9625, 852.4375
Munising · Michigan's Public Safety Communications System (MPSCS)
RFSS 5 · Site 24 (hex 18) · NAC 79B · about 17 mi away
Control 852.8875, 853.375
Voice 851.475, 852.3625, 852.7125
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.