Douglas County Sheriff’s Dept. (Only slight differences)

10-0 Caution
10-1 Unable to copy
10-2 Good signal
10-3 Stop transmission
10-4 OK
10-5 Relay
10-6 Busy
10-7 Out of service
10-8 In service
10-9 Repeat
10-10 Fight
10-11 Animal complaint
10-12 Stand by
10-13 Weather/Road report
10-14 Prowler
10-15 Burglary
10-16 Domestic dispute
10-17 Armed robbery
10-18 Quickly
10-19 Return to quarters
10-20 Location
10-21 Call
10-22 Cancel
10-23 On scene
10-24 Finished last assignment
10-25 Meet with
10-26 Sex offense
10-27 Drivers license information
10-28 Vehicle registration information
10-29 Check for wanted/stolen status
10-30 Unnecessary use of radio
10-31 In progress
10-32 Subject with firearms
10-33 Emergency
10-34 Motor vehicle theft
10-35 Person down
10-36 Correct time
10-37 Suspicious
10-38 Traffic stop
10-39 Resume normal operations
10-40 Check with owner
10-41 Begin duty
10-42 End of duty
10-43 Murder
10-44 Suicide
10-45 Unattended Death
10-46 Assist motorist
10-47 Assault
10-48 Person shot
10-49 Speeding auto
10-50 Accident
10-51 Wrecker needed
10-52 EMS needed
10-53 Zone patrol
10-54 Livestock in road
10-55 Intoxicated driver
10-56 Intoxicated person
10-57 Hit and run
10-58 Direct traffic
10-59 Escort
10-60 Juvenile complaint
10-61 Secure radio/Rider in vehicle
10-62 Harassing/Obscene phone calls
10-63 Prepare to copy
10-64 Theft
10-65 Mechanical breakdown
10-66 Foot patrol
10-67 Serving a Warrant
10-68 Loud party/music
10-69 Message received
10-70 Fire
10-71 Gas drive off
10-72 Police station
10-73 Switch over
10-74 Negative
10-75 Be in contact
10-76 En route
10-77 ETA
10-78 Need assistance
10-79 Notify coroner
10-80 Chase
10-81 Hourly status report
10-82 Open sally port
10-83A, B Discharging fireworks, firearms
10-84 Special detail
10-85 Missing person/runaway
10-86 Operator
10-87 Trash dumping
10-88 Phone number
10-89 Bomb threat
10-90 Bank alarm
10-91 Prisoner transport
10-92 Improper parking
10-93 Alarm
10-94 Drag racing
10-95 In custody
10-96 Mental subject
10-97 Silent/Holdup alarm
10-98 Jail break
10-99 Wanted/Stolen
10-109D – Dead

The following signals are used by the Douglas County Fire Dept.

10 Tornado
30 Under Control
32 Explosion
33 Structure
34 Auto
35 Grass or Woods
36 Investigation
37 EMS needed
38 Special tools rescue
39 Bomb threat
41 Wash down
42 Training
44 Suicide
48 Death
90 Civil Disturbance
91 Aircraft down
95 Hazmat