Basic Codes
Affirmative = Yes
Copy = Message understood
Disregard = Ignore the previous message
Negative = No
Roger or Roger that = Message understood
What’s your 20? = What’s your location
Do you copy? = Can you hear me
Loud and Clear = Your radio is working
Radio Check or Mic Check = Is my radio working
Say Again or Go Again = Say your message again
Over = I’m done with my transmission, ready for your reply
Out = I’m done transmitting for now
10-Codes
10-1 = Signal is bad; transmission is received poorly
10-2 = Signal is good; transmission is received well
10-3 = Stop the transmission
10-4 = Transmission is received
10-5 = Relay the message to (name or someone else)
10-6 = Stand by, busy
10-7 = Out of service
10-8 = In service
10-9 = Repeat message
10-10 = Transmission is completed, please stand by
10-11 = Talking too fast
10-12 = Visitors are present
10-13 = Road conditions and advise weather
10-14 = Escort or convoy
10-15 = We have prisoner in custody
10-16 = Make a pick up at
10-17 = Urgent business
10-18 = Anything for us?
10-19 = Nothing for you
10-20 = Location