Emergency Alert System Emergency Alert System CONELRAD (Control of Electromagnetic Radiation) was a planned method of emergency broadcasting to the public of the United States in the event of World War III. It served two purposes; to prevent Soviet bombers from homing-in on American cities by using broadcast stations as beacons, and to provide essential civil defense information. U.S. President Harry S. Truman established CONELRAD in 1951. ...more on Wikipedia about "CONELRAD"
The Emergency Alert System (EAS), is a national system in the U.S. put into place in 1997, superseding the Emergency Broadcast System and administered by the Federal Communications Commission (FCC). The EAS covers both radio and television (including low-power stations), and cable television companies. In November 2005, the FCC proposed amending EAS rules to cover Direct Broadcast Satellite (DBS) services and digital cable services which are not specifically addressed in the Commission's EAS rules. ...more on Wikipedia about "Emergency Alert System"
The Emergency Broadcast System (EBS) was an emergency warning system in the USA used from 1963 to 1997 at which time it was replaced with The Emergency Alert System ...more on Wikipedia about "Emergency Broadcast System"
Specific Area Message Encoding or SAME is the protocol used to encode the Emergency Alert System in the U.S. for broadcast stations. It was originally created for NOAA Weather Radio by the National Weather Service, and was later adopted by the FCC for regular broadcasters on radio, television, and cable, as well as by Environment Canada for its weather radio service. ...more on Wikipedia about "Specific Area Message Encoding"
The two-tone attention signal is used during a test of the U.S. Emergency Alert System. This signal is comprised of 2 different tones: one at 853 Hz, and the other at 960 Hz. This tone is to get listeners' attention during these tests. ...more on Wikipedia about "Two-tone attention signal"
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