Earlier today, I was tuned into 30m listening for the the DXpedition to the Clipperton Atoll, transmitting using the callsign TX5C. The signals to there were really quite odd, they were characterized by deep fades, with the band going fairly quiet, then a few loud morse stations swelling up, and then suddenly a huge chorus of Morse signals swelling up, then falling into a deep, rapid fade.

I recorded a bit of it for you to listen to.