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