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From Cecil's Mailbag by the Straight Dope Science Advisory Board
Dear Straight Dope:
Growing up in the seventies and
eighties, I remember radio airplay being interrupted by "tests" run
by the Emergency Broadcast System: "This is a test." When I heard
something similar on the radio the other day, it made me realize
that I haven't heard said tests for quite some time, and it got me
thinking. Radio stations do not seem to be playing them with
anywhere near the same frequency as they used to. Were they
primarily a Cold War era necessity? In the case of nuclear war or
something? Or were they for all emergencies, including tornados,
floods, snow storms, etc.? Were they ever not just a test? I
don't recall ever hearing them tell me "it was for real this time,
no kidding around!" Also, who were "they"? Who is the Emergency
Broadcast System--FCC, CIA, CNN, NORAD?? Who ran it, and who
funded it? Is it still around? Will someone still give me
"further instructions of what to do in my area in the case of a
real emergency"? --Just curious
SDSTAFF Songbird replies:
Miss those old two-tone attention signals, do we?
Established in 1963 by the Federal Communications Commission, the
EBS was designed to transmit messages on all broadcast stations
(AM, FM and TV), giving the President a way to address the American
people in the event of a national emergency. State and local
agencies were also allowed to transmit emergency information via
the EBS.
As to whether broadcasts were ever NOT a test--absolutely. In the
past year, we Californians have heard the EBS signal intoned many
times as emergency officials came on the air to warn us of levy
breaks and nearby floods.
The EBS was retired in January 1998 and replaced with the new
state-of-the-art Emergency Alert System (EAS)--isn't there always
an upgrade? This new system provides access to broadcast stations,
cable systems and participating satellite programmers for the
transmission of emergency messages (and less obtrusive weekly
tests). The EAS uses digital codes developed by the National
Weather Service (NWS). NWS offices can originate coded messages
that are area specific and will only activate EAS decoders and send
emergency warnings to people in the affected geographic area.
Even if you aren't plugged in, the EAS provides the option to
permit new specially equipped consumer products--TVs, radios,
pagers, etc.--to "turn themselves on" to receive and deliver the
emergency message.
But please, rest assured that if this had been an actual emergency,
Cecil would have told you where to go.
--SDSTAFFSongbird
Straight Dope Science Advisory Board
Cecil's Mailbag is researched and written by members of the Straight Dope Science Advisory Board, Cecil's online auxiliary. Although the SDSAB does its best, these articles are edited by Ed Zotti, not Cecil, so accuracywise you'd better keep your fingers crossed.
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