What does the code 10-04 indicate?

What does the code 10-04 indicate?

• A. To Repeat
• B. Acknowledgement/Message Received
• C. Location
• D. In service, available

Answer: (B)

In radio communications, concise codes are used to confirm status without long messages. A 10-04 means the message has been received and understood, so the sender can proceed with the next instruction. It’s an acknowledgment that communication was successful and that the recipient is ready to act. It’s not about repeating a message, reporting a location, or indicating being in service—the others refer to different signals or codes used for those purposes.

In radio communications, concise codes are used to confirm status without long messages. A 10-04 means the message has been received and understood, so the sender can proceed with the next instruction. It’s an acknowledgment that communication was successful and that the recipient is ready to act. It’s not about repeating a message, reporting a location, or indicating being in service—the others refer to different signals or codes used for those purposes.