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  2. iPhone bug could mean that your alarm does not sound as ... - AOL

    www.aol.com/news/iphone-bug-could-mean-alarm...

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  3. iPhone Alarm Problems Continue for Third Day - AOL

    www.aol.com/news/2011-01-03-iphone-alarm...

    Three days into January 2011 and some Apple (AAPL) iPhone users are still struggling with a glitch in the phone's alarm function. For a third consecutive day, iPhone alarms failed to go off ...

  4. Fix problems with the AOL app on iOS

    help.aol.com/articles/fix-problems-with-the-aol...

    Verified for iOS 9.3 and later. 1. Double press the Home button or swipe up and hold. 2. Swipe up on the image of the app. 3. Re-launch the app and attempt to reproduce the issue.

  5. Emergency Alert System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Alert_System

    The National Public Warning System, also known as the Primary Entry Point (PEP) stations, is a network of 77 radio stations that are, in coordination with FEMA, used to originate emergency alert and warning information to the public before, during, and after incidents and disasters.

  6. Fact check: Apple's latest iPhone update keeps Emergency ...

    www.aol.com/news/fact-check-apples-latest-iphone...

    This week, users took to the internet to falsely claim that an update by Apple will shut off the Emergency Alert System on iPhones. Fact check: Apple's latest iPhone update keeps Emergency Alert ...

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  8. Emergency Broadcast System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Broadcast_System

    This quick off-and-on became known to broadcast engineers as the "EBS Stress Test", as older transmitters would sometimes fail after the quick cycling on and off. [ 23 ] Starting in 1976, the two-tone Attention Signal (853 Hz and 960 Hz) was implemented, replacing the 1000 Hz tone and eliminating the need to switch the transmitter on and off.

  9. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Although an intruder alarm panel may also have these detectors connected, it may not meet all the local fire code requirements of a fire alarm system. Traditional smoke detectors are ionization smoke detectors which create an electric current between two metal plates, which sound an alarm when disrupted by smoke entering the chamber.