Surprised to dig out of the noise... a voice aeronautical beacon on LW! I thought they were all pretty much decommissioned.
Beacon is on 254kc in Batesville, Indiana.
repeats:
"Batesville-Hillenbrand Airport... automated Weather Observation"... (also sends cw id HLB).
Update @ 0359u... Guess there's more voice beacons than I thought. Hearing a real weak one at 228kc, but can't quite pull it out of the noise. Tomorrow's another day...