10-0
Radio Check
10-1
Signal Weak
10-2
Signal Good
10-3
Stop transmitting
10-4
Affirmative (OK)
10-5
Relay (To)
10-6
Busy
10-7
Out of service
10-8
In service
10-9
Repeat
10-10
Negative
10-11
Roadside check
10-12
Standby
10-13
Existing conditions
10-14
Message information
10-15
Message delivered
10-16
Reply to message
10-17
En Route
10-18
Urgent
10-19
In contact
10-20
Location
10-21
Call () by phone
10-22
Disregard
10-23
Arrived at scene