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Costilla County Police Frequencies

Costilla County in Colorado has 1 countywide conventional frequency and 3 countywide talkgroups in our database. Use the list of 4 cities and communities below for local police departments.

About Costilla County 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: State of Colorado DTRS: 3 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 Costilla County, start with the San Luis site of State of Colorado DTRS. Its control channels: 851.3375, 852.4375, 852.75 MHz.

Costilla County conventional frequencies

Dispatch

AgencyDescriptionFrequency (MHz)ToneModeFCC
Costilla County SheriffCostilla County Sheriff – Dispatch155.6850
In 156.0300
FMNWNGR263

Costilla County trunked talkgroups

State of Colorado DTRS

AgencyDescriptionTalkgroupHexMode
Costilla County SheriffCostilla County Sheriff – Dispatch82332029D
Costilla County SheriffCostilla County Sheriff – Tactical Channel8234202aD
Costilla County SheriffCostilla County Sheriff – Tactical Channel8237202dD

Radio system sites in Costilla County

Program the control channel first; your scanner finds the voice channels from it.

San Luis · State of Colorado DTRS
RFSS 6 · Site 40 (hex 28) · NAC D18
Control 851.3375, 852.4375, 852.75, 853.2125
Voice 851.0875, 855.7125
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.

Cities & communities in Costilla County

Common questions

What frequency do the police use in Costilla County?

Dispatch channels listed for Costilla County: Costilla County Sheriff 155.6850 MHz.

Are Costilla County police talkgroups encrypted?

None of the 3 talkgroups listed for Costilla County are marked encrypted.