The Siren Board

I was gonna be in the area for this, and thought "Why the hell not, I haven't been up to one of these in ages anyway." So, here we are!
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https://www.youtube.com/watch?v=xcFQ9fdvVDs

It sounds like that system has been upgraded to Encrypted FSK. I think all ASC nuclear systems were upgraded due to the nuclear system to the north of me also having them. I am also willing to bet that they are using acoustic sensor cards.