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10-Codes & Signal Codes

🔢 10-Codes & Signal Codes

Standard NH Police Radio Codes — Used by NH State Police & Local Departments

ⓘ Note: While many agencies are moving to plain-language radio communications, 10-codes remain in widespread use throughout New Hampshire, especially with smaller departments. The codes below reflect standard NH State Police and commonly used local department codes. Individual agencies may have variations.
Standard 10-Codes
CodeMeaning
10-1Signal Weak / Poor Reception
10-2Signal Good
10-3Stop Transmitting
10-4Acknowledged / OK
10-5Relay Message
10-6Busy / Stand By
10-7Out of Service
10-8In Service / Available
10-9Repeat / Say Again
10-10Fight in Progress
10-11Dog Case / Animal Control
10-12Stand By (Stop)
10-13Weather / Road Conditions
10-14Prowler Report
10-15Civil Disturbance
10-16Domestic Disturbance
10-17Meet Complainant
10-18Complete Assignment ASAP
10-19Return to Station
10-20Location / What is Your Location?
10-21Call by Telephone
10-22Disregard
10-23Arrived at Scene
10-24Assignment Completed
10-25Report to / Meet
10-26Detaining Subject, Expedite
10-27Driver’s License Information
10-28Vehicle Registration Request
10-29Check for Wanted
10-30Unnecessary Use of Radio
10-Codes Continued
CodeMeaning
10-31Crime in Progress
10-32Man with Gun
10-33Emergency! All Units Stand By
10-34Riot
10-35Major Crime Alert
10-36Correct Time
10-37Suspicious Vehicle
10-38Stopping Suspicious Vehicle
10-39Urgent — Use Lights & Siren
10-40Silent Run — No Lights/Siren
10-41Beginning Tour of Duty
10-42Ending Tour of Duty
10-43Information / Intel
10-44Permission to Leave Patrol
10-45Animal Carcass on Road
10-46Assist Motorist
10-47Emergency Road Repairs Needed
10-48Traffic Standard Needs Repair
10-49Traffic Light Out
10-50Accident (MVC) / Traffic Stop
10-51Wrecker Needed
10-52Ambulance Needed
10-53Road Blocked
10-54Livestock on Highway
10-55Suspected DUI
10-56Intoxicated Pedestrian
10-57Hit & Run Accident
10-58Direct Traffic
10-59Convoy / Escort
10-60Squad in Vicinity
10-Codes (61–99)
CodeMeaning
10-61Personnel in Area
10-62Reply to Message
10-63Prepare to Make Written Copy
10-64Message for Local Delivery
10-65Net Message Assignment
10-66Message Cancellation
10-67Clear for Net Message
10-68Dispatch Information
10-69Message Received
10-70Fire Alarm
10-71Advise Nature of Fire
10-72Report Progress on Fire
10-73Smoke Report
10-74Negative
10-75In Contact With
10-76En Route to
10-77ETA
10-78Need Assistance
10-79Notify Coroner
10-80Chase in Progress
10-81Breathalyzer Report
10-82Reserve Lodging
10-83School Crossing Duty
10-84If Meeting, Advise ETA
10-85Delayed Due To
10-86Officer / Operator on Duty
10-87Pick Up / Distribute Checks
10-88Present Telephone Number of
10-89Bomb Threat
10-90Bank Alarm at
10-91Pick Up Prisoner / Subject
10-92Improperly Parked Vehicle
10-93Blockade
10-94Drag Racing
10-95Prisoner / Subject in Custody
10-96Mental Subject
10-97Check Signal / Test Signal
10-98Prison / Jail Break
10-99Wanted / Stolen Indicated
NH Signal Codes
CodeMeaning
Signal 1000Mutual Aid Request
Signal 13Officer Needs Help / Urgent Assistance
Signal 14Backup Requested (Non-emergency)
Code 1Respond without Lights/Siren
Code 2Urgent — Lights No Siren
Code 3Emergency — Lights and Siren
Code 4All Clear / No Further Assistance Needed
Code 5Stakeout — Stay Away
Code 6Out of Vehicle for Investigation
Code 7Meal Break
Code 8Open Mike / Check Radio
Common NH Fire Radio Terms
TermMeaning
Working FireActive structure fire with flames showing
Still AlarmPartial response, smaller incident
Box AlarmFull first-alarm assignment dispatched
All HandsAll responding units are working the incident
Signal 17Fire Under Control
MaydayFirefighter in distress / emergency
PARPersonnel Accountability Report
RIT / RICRapid Intervention Team / Crew
ICIncident Commander
Division / BranchICS organizational components
ExposureAdjacent structure at risk from fire
KnockdownMain body of fire extinguished
OverhaulSearching for hidden fire after knockdown