Skip to content

Lake Petersburg Police Frequencies

We do not have frequencies listed specifically for Lake Petersburg in Menard County, Illinois yet. Countywide channels for Menard County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Atterberry (STARCOM21 Statewide Illinois), about 6 miles away.

About Lake Petersburg Police Frequencies

  • 3 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: STARCOM21 Statewide Illinois: 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 Lake Petersburg, start with the Atterberry site of STARCOM21 Statewide Illinois, about 6 miles away. Its control channels: 851.95, 852.475, 853.3125 MHz.

Menard County channels that also cover Lake Petersburg

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Menard County Sheriff BackupMenard County Sheriff – Dispatch (to SC21)155.1150
In 158.9250
103.5 PLFMNWQB723

Tactical

AgencyDescriptionFrequency (MHz)ToneModeFCC
Menard County Sheriff BackupOperations158.9250411 DPLFMNWQB723

Talk-around & Car-to-Car

AgencyDescriptionFrequency (MHz)ToneModeFCC
Menard County Sheriff BackupCar-to-Car156.1350FMNWQB723

STARCOM21 Statewide Illinois

AgencyDescriptionTalkgroupHexMode
Menard County SheriffMenard County Sheriff – Dispatch607117b7D
Menard County SheriffMenard County Sheriff – Tactical Channel607217b8D

Nearest trunked radio sites

Distances are measured from the center of Lake Petersburg.

Atterberry · STARCOM21 Statewide Illinois
RFSS 2 · Site 32 (hex 20) · NAC 147 · about 6 mi away
Control 851.95, 852.475, 853.3125
Voice 851.425, 853.8875, 859.3625
Springfield · STARCOM21 Statewide Illinois
RFSS 2 · Site 30 (hex 1E) · NAC 14A · about 17 mi away
Control 852.325, 852.85, 853.375
Voice 851.1125, 851.4875, 852.075, 852.675, 857.3625, 858.2125
Sangamon Co Simulcast · STARCOM21 Statewide Illinois
RFSS 2 · Site 63 (hex 3F) · NAC 143 · about 19 mi away
Control 772.80625, 773.23125, 773.48125, 773.98125
Voice 771.98125, 772.23125, 772.53125
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.