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Martinton Police Frequencies

We do not have frequencies listed specifically for Martinton in Iroquois County, Illinois yet. Countywide channels for Iroquois County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Ashkum (STARCOM21 Statewide Illinois), about 13 miles away.

About Martinton 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: STARCOM21 Statewide Illinois: 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 Martinton, start with the Ashkum site of STARCOM21 Statewide Illinois, about 13 miles away. Its control channels: 851.8625, 853.325, 856.2125 MHz.

Iroquois County channels that also cover Martinton

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
I-COM BackupI-COM – Dispatch155.5350
In 158.9100
203.5 PLFMNWQCD920

STARCOM21 Statewide Illinois

AgencyDescriptionTalkgroupHexMode
Iroquois County SheriffIroquois County Sheriff – Dispatch (multicast w/155.775)376809330D

Nearest trunked radio sites

Distances are measured from the center of Martinton.

Ashkum · STARCOM21 Statewide Illinois
RFSS 2 · Site 50 (hex 32) · NAC 144 · about 13 mi away
Control 851.8625, 853.325, 856.2125
Voice 851.3375, 851.4375, 853.8875, 860.8375
Kankakee Co Simulcast · STARCOM21 Statewide Illinois
RFSS 2 · Site 48 (hex 30) · NAC 148 · about 18 mi away
Control 853.4375, 859.2625, 859.7625
Voice 852.4125, 852.9125, 853.9875, 854.5625, 856.7625, 857.4875, 858.2125, 858.7625
East Lynn · STARCOM21 Statewide Illinois
RFSS 2 · Site 5 (hex 5) · NAC 14A · about 31 mi away
Control 852.3375, 852.8625
Voice 851.8125, 855.7125, 857.2125, 859.3375
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.