Introduction:
People have been using emergency alerts to protect themselves and their surroundings from unexpected dangers. These alerts may be in the form of sounds or gestures. They come in really useful when you want to inform somebody about the possible dangers. EAS is one technology which can come in very useful in case of emergency. It was developed by US government for keeping a close eye on disasters. EAS has diverse applications. It is the technology that is used in most of the modern modes of communication like AM and FM radio, cell phones and cable TV stations. People have been using emergency alerts since an eternity to inform others about dangers. The only difference now is that the means of emergency alert have developed from traditional to scientific ones. Initially people were content with using sounds to inform each other about unexpected disasters. Nowadays we have radio and TV stations to inform us about possible emergency or disaster. Emergency alert system has been developed in collaboration with National Weather service and Federal Emergency Management. These agencies come in very useful because they inform EAS about unexpected climate and weather changes.
Technical Specifications
There are four basic parts of a message that is composed within an EAS. These are:
SAME header
Attention Signal
Audio announcement
A digital end-of-message marker
The first part is considered as the most important and crucial part of emergency alert system. Basically, it is equipped with the information about those who are organizing it or providing information for it like the president, weather service or the broadcaster. Not only this, it also contains the whole information about the event happened i.e. the exact date and time when the event occurred, the nature of the disaster like flood, earthquake and the measurement of the area that was affected due to this. This is a system which has been in use from so many years in more than 30 radio and TV stations so as to provide complete information to the president and government staff.
CONELRAO (control of electromagnetic Radiations):
CONELRAO was established as first national alerting system by President Harry Truman in 1951. With CONELRAO, radio stations could only broadcast during emergency using certain frequencies.
EBS (Emergency Broadcasting System)
CONELRAO was later developed into Emergency Broadcasting system which was used by president to inform the American citizens about possible emergency.
FCC (Federal Communication Commission)
Emergency alert system replaced Federal Communication Commission in 1994. The purpose for which new system was introduced was to eliminate the limitations of Emergency Broadcasting System. The difference between both the services lies in their methods. Rules and regulations of Emergency alert system are governed by Homeland security Bureau as well as Public safety commission of FCC. Some states of America deploy their own plans for Emergency alert system. Recently, EAS has become a part of Integrated Public Alert and Warning System (IPAWS). IPAWS is a program started and run by Federal Emergency Management Agency (FEMA).
Common kinds of Emergency Alerts:
Although EAS is the most commonly used Emergency alert system used but you cannot deny the importance of other types of Emergency alerts which include Auto dialer Phone, Wizard analog dials paces digital phone dialers and Social Acceptance.
EAS is a kind of system which has been designed keeping in mind the needs of commoners. It is not only for those who possess special instruments but are also available to the general public and you can receive them by either by mail order or retailer.
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