VO1NAa in Newfoundland was a good signal for most of the night (see pictures below). He was using DFCW60 on 137.777kHz (click on the images to enlarge).
VO1NA 0220-0345UTC
VO1NA 0345-0500UTC
VO1NA 0500-0630UTC
VO1NA 0630-0755
VO1NA 0755-0915UTC
Other 136kHz stations received were DK7FC using QRSS3 and PA0A on Opera32.