Very strong Link-11 (DSB) centered on 6982 kHz (covering 6979 kHz to 6985 kHz). Luckily the UNID net on 6985 kHz is on 6985 USB. Spanish language. There's another wobbling data signal on 6987.3 kHz or 6987.2 kHz (6987 kHz if you're tuned in USB mode).
Lots of QRM in the little chunk of spectrum just below the bottom edge of 40 meters 7 MHz band.