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  2. National Emergency Message - Wikipedia

    en.wikipedia.org/wiki/National_Emergency_Message

    National Emergency Messages are treated the same as any other message transmitted over the Emergency Alert System, except that stations are required to relay them. [2] When a message is received, the receiver is to open an audio channel to the originating source until the End of Message (EOM) tones are received.

  3. Emergency Alert System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Alert_System

    Replaced. Emergency Broadcast System, Local Access Alert. The Emergency Alert System (EAS) is a national warning system in the United States designed to allow authorized officials to broadcast emergency alerts and warning messages to the public via cable, satellite and broadcast television and AM, FM and satellite radio.

  4. Emergency Broadcast System - Wikipedia

    en.wikipedia.org/wiki/Emergency_Broadcast_System

    Emergency Alert System. The Emergency Broadcast System (EBS), sometimes called the Emergency Action Notification System (EANS), was an emergency warning system used in the United States. It was the most commonly used, along with the Emergency Override system. It replaced the previous CONELRAD system and was used from 1963 to 1997, at which ...

  5. Emergency override system - Wikipedia

    en.wikipedia.org/wiki/Emergency_override_system

    The Local Access Alert (also known as Local Access System or Emergency Override System) is a system designed to warn radio stations, television stations, cable television broadcast feeds or satellite signals of impending dangers such as severe weather and other civil emergencies. With a gradual transition from analog cable to digital cable, the ...

  6. Wikipedia:Free sound resources - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Free_sound_resources

    Free sound resources. Shortcut. WP:FSR. There are a number of free sound effects resources of public domain or free content sound recordings appropriate for Wikipedia use available online, and as well as in other contexts. All files should be converted to ogg, Wikipedia's patent-free format of choice.

  7. Alert Ready - Wikipedia

    en.wikipedia.org/wiki/Alert_Ready

    The National Public Alerting System (NPAS; French: Système national d'alertes à la population), branded as Alert Ready (French: En Alerte), is the national warning system in Canada, broadcast to Canadian television, radio, and wireless devices. [1][2][3] The system consists of infrastructure and standards for the presentation and distribution ...

  8. Specific Area Message Encoding - Wikipedia

    en.wikipedia.org/wiki/Specific_Area_Message_Encoding

    Specific Area Message Encoding (SAME) is a protocol used for framing and classification of broadcasting emergency warning messages. It was developed by the United States National Weather Service for use on its NOAA Weather Radio (NWR) network, and was later adopted by the Federal Communications Commission for the Emergency Alert System, then subsequently by Environment Canada for use on its ...

  9. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    The generalized nature of sirens led to many of them being replaced with more specific warnings, such as the broadcast-based Emergency Alert System and the Cell Broadcast-based Wireless Emergency Alerts and EU-Alert mobile technologies. By use of varying tones or binary patterns of sound, different alert conditions can be called.

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