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Note: These are the standard APCO ten-codes. Many local departments use their own radio
codes or variations of the APCO codes.
10-1 Cannot understand your message
10-2 Your signal is good
10-3 Stop transmitting
10-4 Message recieved ("OK")
10-5 Relay information to _________
10-6 Station is busy
10-7 Out of service
10-8 In service
10-9 Repeat last message
10-10 Negative ("no")
10-11__________ in sevice
10-12 Stand by
10-13 Report __________ conditions
10-14 Information
10-15 Mesage delivered
10-16 Reply to message
10-17 En route
10-18 Urgent
10-19 Contact __________
10-20 Unit location
10-21 Call __________ by telephone
10-22 Cancel last message
10-23 Arrived at scene
10-24 Assignment completed
10-25 Meet __________
10-26 Estimated time of arrival is _________
10-27 Request for information on license
10-28 Reques vehicle registration information
10-29 Check records
10-30 Use caution
10-31 Pick up
10-32 Units requested
10-33 Emergency! Clear the air
10-34 Correct time
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