Roger that = Message received and understood
Roger so far = Confirming part way through a long message that you’ve understood the message so far
Affirmative = Yes
Negative = No
Come in = Asking another party to acknowledge they can hear you
Go ahead = I am ready for your message
Say again = Repeat all of your last message
Say all before/after = Repeat all before/after a certain phrase or word if you didn’t catch part of the message
Over = Message finished, inviting others to respond if needed
Out = Conversation is finished, no answer is required or expected
Radio check = What’s my signal strength? Can you hear me?
Read you loud and clear = Your transmission signal is good, I can hear you fine
Wilco = Abbreviation of “I will comply”, means the speaker will complete the task that’s been asked of them
Break, break = Interruption to a transmission to communicate urgently
Emergency, emergency = Distress call, only to be used when there is an imminent danger to life and immediate assistance is required
Stand by = Wait for a short period and I will get back to you
Wait out = Waiting period is longer than I expected, I will get back to you as soon as possible
I spell = The next word will be spelled out using the phonetic alphabet