UnID 1670 kHz 05:40 UTC 14 May 2021. SINPO 34443.
Unidentified on 1670 playing 60s-80s pop music.
Ruling out CJEU, it was not in French and not children's music.
Ruling out WMGE, it was not News/Talk.
Ruling out WOZN, it was not Sports.
What is XECFR?
Good and steady signal in Northern Virginia from 05:40 to 05:55 but no discernible ID. Heavy interference from 05:55 wiped out MW except for local stations.