There’s something creepy about radios. They’re an iconic device in the Silent Hill series, which used them to mark the presence of nearby monsters with an eerie, warped static. Horror movies like to possess them to play spooky old-timey tunes at unexpected times, or convey cryptic warnings to unsuspecting protagonists. Before games and television, they served as a home for horror and mystery programs. But even outside of fiction, there are numbers stations: real, Cold War-era shortwave transmissions used to broadcast coded messages that would sound like nonsense to anyone without the key needed to decipher them. Night School Studio…