OK, What Exit. You asked for it. ![]()
In regards to the old style EBS system:
[QUOTE=What Exit?]
..the beeps were a code that told the stations if it was a test, a disaster, war, Imminent nuclear attack, etc.
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No, there were only the two tones, transmitted together. It was the announcement that came after the tones that determined what happened next.
Each station received a big red envelope every month that had to be kept next to the EBS receiver and sealed. It contained the authentication codes and stand-down codes for each day of the month. If there was an actual national emergency, the announcement received would have contained some wording like “Authentication Tango Quebec.” The operator on duty would break open the red envelope and if the authentication code matched, the station would activate their EBS and pass the message along. The station would then either join the originating station for a simulcast, or tell it’s listeners where to tune to hear the emergency and then go off the air. The emergency would have also been sent via AP and UPI newswires with the same authentication code.
Likewise the stand-down. When an emergency was declared over, the originating station would send the stand down code for the day, such as “Stand Down Yankee Kilowatt.” The operator would check that this matched, and if it did, that station could resume regular programming.
Exactly. Rebroadcasting a primary station, all primary stations would eventually be broadcasting the same thing, linking all stations in the USA in one big, over the air network not dependent on phone lines.
There was one or two primary stations in each defined market. All others were secondary stations and would have to go off the air in the case of a declared national emergency.
One more thing I just remembered. The priority of EBS alerts went in the order of national, local, state. So a local emergency would take precendence over a state emergency, while a national emergency would take precedence over either. Our study group was instructed to remember this precedence order by the mnemonic NLS, or Nice Long Schlong. Good thing this was before the days of sexual harassment suits, as about 25% of the class was female.