10-1 = Receiving poorly
10-2 = Receiving well
10-3 = Stop transmitting
10-4 = Message received
10-5 = Relay message to _____
10-6 = Busy, please stand by
10-7 = Out of service, leaving the air
10-8 = In service, subject to call
10-9 = Repeat message
10-10 = Transmission completed, standing by