10-4 Message received; I understand; ok; all right
Affirmative / Affirm Yes
Negative No
Come in You may begin speaking now
Copy I heard what you just said; ok; all right
Go ahead or Send your traffic Send your transmission
Out I have finished talking to you and do not expect a reply
Over I have finished talking and I am listening for your reply.
Reading you five / Loud and clear Your signal is clear
Ready to copy Write down; I am ready to write down
Roger I have received all of the last transmission
Roger so far You have understood the contents of the transmission so far.
Say again Repeat; Please repeat your last message
Standby or wait, out Pause for the next transmission. Can be followed by a number to indicate estimated number of minutes (ex. Standby five)
Wait, over I do not have the information but will attempt to get it. Until then I have finished speaking and do not expect a reply. Can be followed by a number to indicate estimated number of minutes until a reply can be expected. (ex: Wait two)