System Test
All EAS equipment must be tested weekly. The required weekly test (RWT) consists, at a minimum, of the header and the end-of-message SAME bursts. Though a RWT does not need an audio or graphic message announcing the test, many stations will provide them as a courtesy to the public. Television stations are not required to transmit a video message for weekly tests. RWTs are scheduled by the station, on random days and times, and are generally not relayed.
Required monthly tests (RMTs) are generally originated by the primary relay station, a state emergency management agency, or by the National Weather Service (NOAA/NWS) and are then relayed by broadcast and cable stations. RMTs must be performed between 8:30 a.m. and local sunset during odd numbered months, and local sunset to 8:30 am for even months. Received monthly tests must be re-transmitted within 60 minutes from receipt. Additionally, an RMT should not be scheduled or conducted during an event of great importance such as a pre-announced Presidential speech, coverage of a national/local election, major local or national news coverage outside regularly scheduled newscast hours or a major national sporting event such as the Super Bowl or World Series, with other events such as the Daytona 500 and Olympic Games mentioned in individual EAS state plans.
Read more about this topic: Emergency Alert System
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