When does the identification code start over?

• A. When broadcast has been interrupted for more than 12 hours
• B. When broadcast has been interrupted for 8 hours or less
• C. At midnight local time
• D. At 2400 UTC

Answer: (A)

The thing being tested is how the system handles reinitializing an identification when the broadcast goes silent. The identification code is reset after a long outage to prevent confusion or misassociation when the signal comes back up. If the broadcast has been interrupted for more than 12 hours, starting over ensures the next transmissions are tied to a fresh, distinct identity rather than clinging to an old code that might no longer reflect the current station.

If the interruption is eight hours or less, there’s still a recent active session, so keeping the same code preserves continuity and avoids unnecessary changes. Resetting based on calendar times like midnight local or 2400 UTC would disconnect the reset from actual outage activity, which could either trigger resets prematurely or miss resets when they’re truly needed.