This page contains radio frequencies, 10 codes, and troop information for North Carolina State Highway Patrol.

Table of Contents

Radio Frequencies
These are radio frequencies used by State Highway Patrol.

freq description
42.780 Channel 1 Mobile
42.620 Channel 2 Base
42.800 Channel 3 Mobile
42.520 Channel 4 Base
42.660 Channel 5 Mobile
42.600 Channel 6 Base
42.760 Channel 7 Mobile
42.640 Channel 8 Base
42.700 Channel 9 Mobile
42.500 Channel 10 Base
42.860 Channel 11 Mobile
42.820 Channel 12 Base
42.580 Channel 13 Mobile
42.380 Channel 14 Base
42.680 Channel 15 Mobile
42.940 Channel 16 Base
42.720 Channel 17 Mobile
42.920 Channel 18 Base
42.220 Channel 19 Special Events
155.445 Repeater/Car-to-Car Simplex
154.680 Repeater/Car-to-Car Simplex
155.475 NLEEC

VIPER Talkgroups
These are VIPER Talkgroups used by State Highway Patrol.

TGID Description
52134 Troop A Common 1
52140 Troop A Common 2
52136 Troop A District 1
52137 Troop A District 2
52138 Troop A District 3
52139 Troop A District 4
52140 Troop A District 5
52141 Troop A District 6
52142 Troop A District 7
52143 Troop A District 8
52144 Troop A H/Q
52145 Troop B Common 1
52146 Troop B Common 2
52147 Troop B District 1
52148 Troop B District 2
52149 Troop B District 3
52150 Troop B District 4
52151 Troop B District 5
52152 Troop B District 6
52153 Troop B District 7
52154 Troop B District 8
52155 Troop B H/Q
52156 Troop C Common 1
52157 Troop C Common 2
52158 Troop C District 1
52159 Troop C District 2
52160 Troop C District 3
52161 Troop C District 4
52162 Troop C District 5
52163 Troop C District 6
52164 Troop C District 7
52165 Troop C District 8
52166 Troop C H/Q
52167 Troop D Common 1
52168 Troop D Common 2
52169 Troop D District 1
52170 Troop D District 2
52171 Troop D District 3
52172 Troop D District 4
52173 Troop D District 5
52174 Troop D District 6
52175 Troop D District 7
52176 Troop D H/Q
52177 Troop E Common 1
52178 Troop E Common 2
52179 Troop E District 1
52180 Troop E District 2
52181 Troop E District 3
52182 Troop E District 4
52183 Troop E District 5
52184 Troop E District 6
52185 Troop E District 7
52186 Troop E H/Q
52187 Troop F Common 1
52188 Troop F Common 2
52189 Troop F District 1
52190 Troop F District 2
52191 Troop F District 2
52192 Troop F District 3
52193 Troop F District 4
52194 Troop F H/Q
52195 Troop G Common 1
52196 Troop G Common 2
52197 Troop G District 1
52198 Troop G District 2
52199 Troop G District 3
52200 Troop G District 4
52201 Troop G District 5
52202 Troop G District 6
52203 Troop G H/Q
52204 Troop H Common 1
52205 Troop H Common 2
52206 Troop H District 1
52207 Troop H District 2
52208 Troop H District 3
52209 Troop H District 4
52210 Troop H District 5
52211 Troop H District 6
52212 Troop H District 7
52224 Troop A Mutual Aid
52225 Troop B Mutual Aid
52226 Troop C Mutual Aid
52227 Troop D Mutual Aid
52228 Troop E Mutual Aid
52229 Troop F Mutual Aid
52230 Troop G Mutual Aid
52231 Troop H Mutual Aid
52127 Air Ops
52216 Governor’s Mansion
57500 NC SC Common
57501 SCHP Common
57502 SCHP Statewide
57503 SCHP Troop 3
57504 SCHP Troop 4
57505 SCHP Troop 5

10 Codes
These are 10 Codes used by State Highway Patrol on the radio.

code definition
10-1 Signal Weak
10-2 Signal Good
10-3 Stop Transmitting
10-4 Affirmative (OK)
10-5 Relay (to)
10-6 Busy
10-7 Out-of-Service
10-8 In-Service
10-9 Say Again (Repeat)
10-10 Negative
10-12 Stand by (Stop)
10-13 Existing Conditions
10-14 Message/Information
10-15 Message Delivered
10-16 Reply to Message
10-17 En route
10-18 Urgent
10-19 (In) contact
10-20 Location
10-21 Call ____ by phone
10-22 Disregard
10-23 Arrived at Scene
10-24 Assignment Completed
10-25 Report to (Meet)
10-26 Estimated Arrival Time
10-27 License/Permit Information
10-28 Ownership Info. (Vehicle)
10-29 Records Check
10-30 Danger/Caution
10-31 Pick Up
10-32 ____ Units Needed (Specify)
10-33 Help Me Quick
10-34 Time
10-35 Valid Concealed Handgun Permit
10-36 Restraint Violation
10-40 Fight in Progress
10-41 Beginning Tour of Duty
10-42 Ending Tour of Duty
10-43 Chase
10-44 Riot
10-45 Bomb Threat
10-46 Bank Alarm
10-47 Complete Assignment Quickly
10-48 Detaining Subject, Expedite
10-49 Drag Racing
10-50 Collision PD, PI, F
10-51 Wrecker Needed
10-52 Ambulance Needed
10-53 Road Blocked
10-54 Hit and Run PD, PI, F
10-55 Intoxicated Driver
10-56 Intoxicated Pedestrian
10-57 Request Chemical Analyst on Duty to Meet ____
10-58 Direct Traffic
10-59 Convoy or Escort
10-60 Investigate Suspicious Vehicle
10-61 Stopping Suspicious Vehicle
10-62 Burglary/Breaking and Entering
10-63 Investigate ___ at ___
10-64 Crime in Progress
10-65 Report of Armed Robbery
10-66 Notify Medical Examiner
10-67 Investigate Report of Death
10-68 Livestock on Highway
10-69 Advise Present Telephone Number
10-70 Improperly Parked Vehicle
10-71 Improper Use of Radio
10-72 Have Prisoner in Custody
10-73 Mental Subject
10-74 Prison or Jail Break
10-75 Records Indicate Wanted or Stolen
10-76 Report of Prowler
10-77 Assist Fire Department with Traffic
10-78 Report of Abandoned Vehicle
10-79 Report of Vehicle Fire
10-80 Report of Careless and Reckless Driving
10-81 Report of High Speed
10-82 Report of Disabled Motorist
10-83 Report of Improper Improper Registration
10-84 Report of Operator’s License Violation
10-85 Report of Mini Bike/Go Cart Violation
10-86 Beginning Authorized Travel
10-87 Ending Authorized Travel
10-88 Unlawful Use of Mobile Device
10-90 Rest Area/Welcome Center Check
10-91 CMV Inspection

Signal Codes
These are Signal Codes used by State Highway Patrol on the radio.

signal definition
1 Suspect Armed and Dangerous
2 Report of Suspected Drug Trafficking
3 Confidential Traffic
4 Report of Vehicle Stored/Recovered
5 Situation under control, no further assistance necessary
6 Violator on active probation/parole
7 Report to District Office/Troop HQ without delay (disturbance)
8 Your equipment is ready for service.
9 Meet at ___ Troop or District meeting.
10 Possible suicidal person
11 All members affected by this signal should immediately prepare for emergency dutty and maintain radio contact.
12 Report ___ at ___ for emergency duty.
13 Conviction/Revocation
14 Current Suspension/Revocation Information other than DWI
15 Protection Order
16 Registered Sex Offender
17 Gang Member
18 Accident/Incident involving Hazardous Material
19 Report of Aircraft Crash at ___
20 Report of Aircraft in Difficulty at ___
21 Request for radio or car repair
22 Fatal Collision Report
23 Message requiring special handling (answer requested)
24 Daily Fatality Summary
25 ___ needs immediate assistance to make arrest of resisting person. Report at once to ___
26 Computer terminal is temporarily out-of-service
27 Pick-Up License Revocation Confirmed
28 Pick-Up Registration Plate Revocation Confirmed
30 Individual of the opposite sex must be placed within the Patrol vehicle for the purpose of public service or enforcement contacts

Troop Information
These are State Highway Patrol Troops and Districts and their corresponding counties.

trp dis county
A Greenville
A 1 Dare, Currituck
A 2 Hertford, Gates, Bertie
A 3 Pasquotank, Chowan, Perquimans, Camden
A 4 Beaufort, Washington, Tyrrell, Hyde
A 5 Pitt, Martin
A 6 Craven, Pamlico
A 7 Lenoir, Jones
A 8 Carteret
B Fayetteville
B 1 Cumberland
B 2 Sampson
B 3 Onslow
B 4 Duplin, Pender
B 5 Columbus, Bladen
B 6 New Hanover, Brunswick
B 7 Robeson
B 8 Harnett
C Raleigh
C 1 Nash, Edgecombe
C 2 Wayne
C 3 Wake
C 4 Franklin, Vance, Warren
C 5 Wilson, Greene
C 6 Johnston
C 7 Durham, Granville
C 8 Northampton, Halifax
D Greensboro
D 1 Chatham, Lee
D 2 Guilford
D 3 Rockingham
D 4 Person, Caswell
D 5 Alamance
D 6 Randolph
D 7 Orange
E Salisbury
E 1 Davidson
E 2 Stanly, Montgomery
E 3 Rowan
E 4 Forsyth
E 5 Stokes, Surry
E 6 Cabarrus
E 7 Davie, Yadkin
F Newton
F 1 Burke
F 2 Wilkes, Ashe, Alleghany
F 3 Caldwell, Watauga
F 4 Iredell, Alexander
F 5 Catawba, Lincoln
G Asheville
G 1 Yancey, Mitchell, Avery, Madison
G 2 McDowell, Rutherford
G 3 Henderson, Transylvania, Polk
G 4 Buncombe
G 5 Haywood, Jackson
G 6 Swain, Macon, Clay, Cherokee, Graham
H Monroe
H 1 Gaston
H 2 Richmond, Scotland
H 3 Union, Anson
H 4 Cleveland
H 5 Mecklenburg
H 6 Moore, Hoke