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Big Spring Police Frequencies

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

About Big Spring Police Frequencies

  • 1 conventional channel uses a digital mode (P25), which needs a scanner that decodes that mode.
  • 1 listed entry is marked encrypted. No scanner can decode encrypted audio.

Shelby County channels that also cover Big Spring

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Shelby County SheriffShelby County Sheriff – Dispatch151.2950
In 153.9200
NAC BE9P25 KSB926

Nearest trunked radio sites

Distances are measured from the center of Big Spring.

Effingham · STARCOM21 Statewide Illinois
RFSS 3 · Site 5 (hex 5) · NAC 140 · about 13 mi away
Control 852.1625, 852.6875, 853.6375
Voice 851.6375, 858.4875
Mattoon · STARCOM21 Statewide Illinois
RFSS 2 · Site 34 (hex 22) · NAC 149 · about 15 mi away
Control 851.9125, 852.4375, 852.9625
Voice 851.3875, 853.4875, 855.1875, 858.7375, 858.8625, 859.7375, 860.7375
Greenup · STARCOM21 Statewide Illinois
RFSS 3 · Site 50 (hex 32) · NAC 141 · about 18 mi away
Control 852.3125, 852.8375, 856.2125
Voice 851.475
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.

Common questions

What frequency do the police use in Big Spring?

We do not have a dispatch channel listed specifically for Big Spring. County-level dispatch channels in the same county: Shelby County Sheriff 151.2950 MHz (NAC BE9).