It's just before 1700 UTC right now and I thought to tune the AM radio (Grundig Satellit 750) to 15670 kHz to see if there is anything there. There is an audio tone, somewhere in the 300-400 HZ area, maybe? Not the usual white-noise whoosh associated with DRM. Anyone else hearing that?
EDIT: A couple of minutes *after* 1700: the tone disappeared at 1700 UTC.