(I hope you don't mind if I lightly modify the prompt to be on a space station instead (fairly sure Earth itself vanished in the Quiet Rapture))
These radio stations are usually for communication with the Consolidation's other space stations.
Not mystery people begging for their lives from God knows where.
The sudden noise nearly startles Stella right out of her shotty chair, though their supervisors would probably kill them if they actually damaged it.
Okay, maybe not that far, but they certainly wouldn't have a chair anymore. Only so many left in the universe now after all.
Either way, the chair gets abandoned when Stella shoots to their feet, tweaking the station to find the sound again.
"Hello?!"
They shout into the mic. What the hell is the protocol for this?
"Hello!? Can you hear me? Who are you? WHERE are you?"
They're shaking. They can't tell if it's from fear, excitement, both, some secret fourth option...