Started on 20m and clean band with a few strong sigs and some south American dx with a lot of strong sigs coming from the western US. Moved to 17m and there were several dx stas, one from Caracas, then on to 15m. 15m had a lot of band noise for some reason, noise absent from the other bands, and there was dx under that noise, infuriatingly. Next tried 10m and a wp4 sta is calling cq on 28412 at 2250Z.