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Derma Police Frequencies

We do not have frequencies listed specifically for Derma in Calhoun County, Mississippi yet. Countywide channels for Calhoun County that may also cover this area are shown below when we have them. The closest trunked radio site we have is Woodland (Mississippi Wireless Information Network (MSWIN)), about 9 miles away.

About Derma 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.
  • 1 conventional channel uses a digital mode (DMR), which needs a scanner that decodes that mode.
  • Trunked radio systems that carry law-enforcement traffic here: Mississippi Wireless Information Network (MSWIN): 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 Derma, start with the Woodland site of Mississippi Wireless Information Network (MSWIN), about 9 miles away. Its control channels: 770.18125, 770.43125, 770.68125 MHz.

Calhoun County channels that also cover Derma

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Calhoun County SheriffDispatch Analog155.9850
In 153.8750
100.0 PLFMNKLD826
Calhoun County SheriffDispatch DMR155.9850
In 153.8750
DMRKLD826

Mississippi Wireless Information Network (MSWIN)

AgencyDescriptionTalkgroupHexMode
Calhoun County SheriffCalhoun County Sheriff – Dispatch400009c40T
Calhoun County SheriffCalhoun (Town) Police400169c50T

Nearest trunked radio sites

Distances are measured from the center of Derma.

Woodland · Mississippi Wireless Information Network (MSWIN)
RFSS 2 · Site 27 (hex 1B) · NAC 2A0 · about 9 mi away
Control 770.18125, 770.43125, 770.68125, 770.93125
Voice 772.38125, 772.65625
Bruce · Mississippi Wireless Information Network (MSWIN)
RFSS 2 · Site 28 (hex 1C) · NAC 2A0 · about 13 mi away
Control 773.05625, 773.30625, 773.55625, 773.80625
Voice 771.15625, 771.63125
West Webster · Mississippi Wireless Information Network (MSWIN)
RFSS 2 · Site 24 (hex 18) · NAC 2A0 · about 18 mi away
Control 774.04375, 774.29375, 774.54375, 774.79375
Voice 771.28125, 771.53125
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.

Common questions

What frequency do the police use in Derma?

We do not have a dispatch channel listed specifically for Derma. County-level dispatch channels in the same county: Calhoun County Sheriff 155.9850 MHz (100.0 PL); Calhoun County Sheriff 155.9850 MHz.