Heyyy i just wanted to share something too since this might be helpful (hopefully lol)
While roaming around the game files, I came across an audio named "isafx_morse.ogg" so I assumed that's what you're trying to solve too
however when i try putting it into a spectogram to decode the morse code ".- .... .-. ----- -.-. .... -- -.... .-.. -.-- ----. ..--- -... ..--- -. .... .-.. -. .--- ...- .-.. --.. ..-. .--. -. .... --- ..... .- ..- -.-- ....- --.. .... .--- .... --.- --.- -...- -...-" which translates to
AHR0CHM6LY92B2NHLNJVLZFPNHO5AUY4ZHJHQQ==


(which is a tiny bit different from ur code, id reckon)
