What proword is used if a message is no longer valid?

What proword is used if a message is no longer valid?

• A. Cancel
• B. Verify
• C. Say again
• D. Wrong

Answer: (A)

Prowords are standardized short words used in radio to convey intent clearly and quickly. When a message is no longer valid, the proword Cancel is used because it directly tells all stations to disregard the previous instruction and not take any action on it. This is different from Say again, which asks for a message to be repeated; Verify, which asks to confirm accuracy; and Wrong, which isn’t a standard proword for revoking a message. In practice, issuing Cancel removes ambiguity and prevents unintended actions based on a previously sent, now invalid, message.

Prowords are standardized short words used in radio to convey intent clearly and quickly. When a message is no longer valid, the proword Cancel is used because it directly tells all stations to disregard the previous instruction and not take any action on it. This is different from Say again, which asks for a message to be repeated; Verify, which asks to confirm accuracy; and Wrong, which isn’t a standard proword for revoking a message. In practice, issuing Cancel removes ambiguity and prevents unintended actions based on a previously sent, now invalid, message.