Skip to content

Antrim Police Frequencies

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

About Antrim Police Frequencies

  • Trunked radio systems that carry law-enforcement traffic here: Michigan's Public Safety Communications System (MPSCS): 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 Antrim, start with the Owosso site of Michigan's Public Safety Communications System (MPSCS), about 6 miles away. Its control channels: 853.4375, 853.9375 MHz.
  • 5 listed entries are marked encrypted. No scanner can decode encrypted audio.

Shiawassee County channels that also cover Antrim

Michigan's Public Safety Communications System (MPSCS)

AgencyDescriptionTalkgroupHexMode
Shiawassee County Law EnforcementShiawassee County Law Enforcement – Dispatch1093445D
Shiawassee County Law EnforcementTactical Operations158362fD
Shiawassee County Law EnforcementCar-to-Car1586632D
Shiawassee County Law EnforcementOwosso City Police Proprietary161464eD
Shiawassee County Law EnforcementBaker College Owosso Campus Safety1908774D
Shiawassee County Law EnforcementCounty Court Security Services1587633D
Shiawassee County Law EnforcementSheriff Jail Security191577bD
5 encrypted talkgroups (cannot be monitored)
AgencyDescriptionTalkgroupHexMode
Shiawassee County Law EnforcementTactical Operations158162dD
Shiawassee County Law EnforcementTactical Operations158262eD
Shiawassee County Law EnforcementProprietary1619653D
Shiawassee County Law EnforcementSheriff Detectives1620654D
Shiawassee County Law EnforcementLEIN1584630D

Nearest trunked radio sites

Distances are measured from the center of Antrim.

Owosso · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 4 (hex 4) · NAC 796 · about 6 mi away
Control 853.4375, 853.9375
Voice 851.1, 851.4375, 851.825, 851.9375, 852.325, 852.4375, 852.7, 852.775, 852.9375, 853.6875, 857.4125, 861.1625
Oak Grove · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 32 (hex 20) · about 14 mi away
Control 853.125, 853.7125
Voice 851.2, 852.075, 855.225
Ingham County Simulcast · Michigan's Public Safety Communications System (MPSCS)
RFSS 1 · Site 27 (hex 1B) · NAC 797 · about 20 mi away
Control 851.125, 851.225, 851.725, 859.9875
Voice 769.08125, 769.66875, 770.08125, 770.43125, 771.55625, 773.05625, 773.43125, 773.68125, 773.78125, 774.40625, 856.4375, 856.9875, 857.0375, 858.4625, 858.9875, 859.4875, 859.7125
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.