[EAS] The Daisy Chain
Sean Donelan
sean at donelan.com
Sat Aug 14 17:28:15 CDT 2021
On Sat, 14 Aug 2021, Gary Timm wrote:
Yes Clay, this issue was identified on the FCC post-test call with SECC Chairs.
Premiere sent Header Codes and EOM, but no audio message per many on the call.
Wow, first time in years I've ever heard anyone got anything through the
Premiere FEMA satellite distribution.
Premiere (and SiriusXM) don't regularly test the audio message potion of
EAS distribution end-to-end.
That shouldn't be a surprise. The EAS daisy-chain depends on setting audio
levels all along the distrubtion chain. In order to set audio levels on
the transmitters and receivers, need to regularly (at least monthly) send a
test message including audio through the distribution channel. Otherwise
it will be a long time before you realize their is a problem, e.g. during
an actual emergency.
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