It appears that there are a lot of whisper stations on 20m.

Station I heard on WSPR, primarily on 20m (12 hours)

The KX3 has been listening to 20m WSPR using my 160m antenna (shunt-loaded tower) for the better portion of the day. It is amazing how many people are playing with this week signal mode. (VE1JF was a 6m signal)

73 de NG0R