I don't think I'm ever going to manage to extract some sort of hidden message from this, though props to anyone else playing this game who tries. I am no decoding expert but I did dig through the game files to find the transmission signal and tried some tests like an audio spectrograph, morse code recognition and toyed around with the soundwave in Audacity. If this is a reference to something I am not sure what it's supposed to be, though if there's some other puzzle here I think I'm going to give up as I'm just not seeing it.