Between 23:00 and 02:00 UTC I am hearing
what sounds like a modulated CW (AM carrier
wave with a 1000 hz tone) Time and Frequency
station in the top half of the 80 Meter band.

Frequency is 3.776.6 mHz (LSB) best heard
and is about an s-5 in the Md/Va area. Seems
to fade out after 02:30 UTC

CW and Frequency shift slightly when the 'pip' is
transmitted, leading me to believe it is comming out
of Cuba. No ID seems to be transmitted at the top
of the hour.

Anyone have any ideas of where or who this station is?