said by AlfredEN 
:The one regulation that's being applied to CATV that I'm not sure is being voluntarily applied by at & t, is the emergency alert. That's when you get an emergency alert on all stations periodically, usually just a test. Sometimes it's an actual emergency. Amber Alerts are generally broadcast over this feature. Generally the tests are done after 1AM local time.
That emergency broadcast system is a joke. When we were under attack on 9/11 they remained silent. Just one example of government regulation that costs money and produces nothing.
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