What radio 10 code is used when you don't understand what the dispatcher has said?

The code 10-9 specifically communicates the need for clarification, meaning "Repeat." This code is used when a security guard or officer does not understand a message received from the dispatcher and requires the information to be repeated for clarity. It serves as a standard procedure in communication, ensuring that all parties are accurately informed and preventing misunderstandings that could arise from unclear messages.

In contrast, the other codes do not serve the purpose of requesting repetition or clarification. 10-8 indicates that an officer is "in service," while 10-7 means "out of service." 10-6 means "busy," which could imply an inability to communicate due to being occupied rather than seeking verbal clarification. Thus, using 10-9 is the appropriate response when there is a lack of understanding in communication with dispatch.