10-codes and radio cheat sheet

**10-codes**
10-1: Unable to copy, change location
10-2: Signal good
10-3: Stop transmitting
10-4: Acknowledged
10-5: Relay
10-6: Busy
10-7: Out of service
10-8: In service, available
10-9: Repeat
10-10: Fight in progress
10-11: Traffic stop
10-12: Stand by
10-13: Officer needs help (urgent)
10-15: Suspect in custody
10-16: Domestic disturbance
10-19: Return to station
10-20: Location
10-22: Disregard
10-23: Arrived on scene
10-26: Detaining suspect
10-27: Driver licence check
10-28: Vehicle registration check
10-29: Check for warrants
10-31: Crime in progress
10-32: Person with a gun
10-33: Emergency, clear the radio
10-38: Stopping a suspicious vehicle
10-41: Beginning shift
10-42: Ending shift
10-50: Vehicle accident
10-52: Ambulance needed
10-55: Intoxicated driver
10-56: Intoxicated pedestrian
10-57: Hit and run
10-62: Unauthorised listener present
10-70: Fire
10-71: Shooting
10-76: En route
10-78: Need assistance
10-80: Pursuit in progress
10-97: On scene
10-99: Wanted person or stolen vehicle

**Signal codes**
Code 1: Respond when convenient, no lights or siren
Code 2: Urgent, lights only
Code 3: Emergency, lights and siren
Code 4: No further help needed, scene safe
Code 5: Stakeout, stay away
Code 6: Out of the vehicle to investigate
Code 7: Meal break
Code 99: Emergency, all units respond

**Phonetic alphabet**
A Alpha, B Bravo, C Charlie, D Delta, E Echo, F Foxtrot, G Golf, H Hotel, I India, J Juliet, K Kilo, L Lima, M Mike, N November, O Oscar, P Papa, Q Quebec, R Romeo, S Sierra, T Tango, U Uniform, V Victor, W Whiskey, X X-ray, Y Yankee, Z Zulu