caught the last Valentich transmission audio floating around, is this legit? need a real one to weigh in

someone dropped this in a Discord and i can't tell if it's the real Melbourne FS tape or a reenactment, the audio's been re-encoded to death. asking the older heads here. context for newbies: Oct 1978, Frederick Valentich, 20yr old, flying a Cessna 182 over Bass Strait to King Island. tells Melbour……