Welcome to the official radio ten codes page used by police, fire, EMS, and search and rescue crews. Ten codes are signals used to represent common phrases in radio communication efficiently. Familiarizing yourself with these codes can enhance communication and coordination during emergency response operations.
Radio Ten Codes
| Code | Meaning |
|---|---|
| 10-1 | Unable to copy – Change location |
| 10-2 | Signal good |
| 10-3 | Stop transmitting |
| 10-4 | Acknowledgement |
| 10-5 | Relay (to) |
| 10-6 | Busy, standby |
| 10-7 | Out of service |
| 10-8 | In service |
| 10-9 | Repeat |
| 10-10 | Negative |
| 10-11 | Dispatching too rapidly |
| 10-12 | Stand by |
| 10-13 | Weather/road conditions |
| 10-14 | Provide assistance |
| 10-15 | Civil disturbance |
| 10-16 | Domestic disturbance |
| 10-17 | Meet complainant |
| 10-18 | Complete quickly |
| 10-19 | Return to station |
| 10-20 | Location |
| 10-21 | Telephone |
| 10-22 | Disregard |
| 10-23 | Arrived at scene |
| 10-24 | Assignment complete |
| 10-25 | Report in person |
| 10-26 | Detaining subject – expedite |
| 10-27 | Driver’s license information |
| 10-28 | Vehicle registration information |
| 10-29 | Check for warrants |
| 10-33 | Alarm sounding / Alarm activation |
| 10-34 | Riot |
| 10-35 | Major crime alert |
| 10-39 | Respond with siren and lights |
| 10-40 | Silent run – No lights, no sirens |
| 10-41 | Beginning tour of duty |
| 10-42 | Ending tour of duty |
| 10-43 | Information |
| 10-46 | Assist motorist |
| 10-47 | Emergency road repairs needed |
| 10-50 | Accident (F, PI, PD) |
| 10-52 | Ambulance needed |
| 10-70 | Fire alarm |
| 10-76 | En route |
| 10-77 | Estimated time of arrival |
| 10-78 | Need assistance |
| 10-97 | Arrived on the scene |
| 10-98 | Assignment completed |
→ Highlighted codes are commonly used in Search and Rescue (SAR) operations.
These ten codes are a standardized system used to facilitate clear and concise radio communication within emergency response agencies. Knowing and understanding these codes can help streamline communication during critical situations. Should you have any questions or need more information regarding radio protocols, feel free to reach out to your local emergency services. Stay safe and stay informed during emergency operations.
