Signal

Voices drift across the band. You cannot hear anything while you are searching for it: moving the dial is static. Stop moving to hear. Hold still and the static softens into a voice, then locks.

Search and you hear only static; hold and you hear one voice, but you commit to where you already are. A voice only locks if you stop moving on top of it.

Move the mouse (or drag on touch) to tune the dial. Stop moving to lock the nearest voice. Transcribe every voice before dawn.

Three nights, each busier than the last, and the clock tightens. Miss one and the run ends.