XPA2, 13538 USB, 12 FEB 2019, 1540, very good signal here, but every time I tried to use Rivet build 90 to decode, there would be two number groups decoded as only four digits long, leading me to believe that Rivet isn't a perfectly accurate decoder.
The earlier transmissions at 16338 / 1500z and 14538 / 1520z were also heard in Denver but both were much weaker.