I don't know what the 3 or 4 of them are talking about in the recording I have but one person in the chat box noted that they are swearing a lot.
It wasn't just 3150, all of them were speaking between about 3148.8 & 3151.8
http://websdr.printf.cc:8901 SDR Link
Edit: As of 254 UTC, two of them are still going