Radio Communication Procedure words (PROWORDS)

acknowledge

Let me know that you have received and understood this message

Affirmative

Yes, or permission granted; that is correct

All after

Everything that follows

Break

Indicated separation of text from other message

Disregard

This transmission is in error- disregard it

Go ahead

Proceed with your message

I read back

The following is my response to your instructions to read back.

I say again

I am repeating transmission or portion indicated.

I spell

I shall spell the next word phonetically

Negative

No; permission not granted; that is incorrect

Out

This is the end of my transmission to you and no answer is required or expected

Over

This is the end of my transmission to you and a response is necessary. Go ahead, transmit

Prepare to copy

Let's the individual receiving your message to prepare to take down the info you are about to pass

Read back

Repeat all, or the specified part, of this message back to me exactly as received

Relay to

Transmit this message to all addresses or to the address designation immediately following

Roger

I have received your last transmission satisfactorily.

Say again

Repeat all, or the following part, of your last transmission

Stand by

Wait for further instructions or information

That is correct

What transmitted is correct

This is

Transmission from whose call sign immediately follows

Unknown station

The identity of the station with whom I am attempting to establish communication is unknown.

Verify

Confirm entire message or portion

Wait

One must pause for a few seconds

Wait-out

Resume communication

Wilco

Will comply