472kHz WSPR (10mW ERP)

OK, I am a masochist!  Overnight I am again on 472kHz WSPR (10mW ERP from the earth-electrode "antenna" in the ground). Within a few minutes I have been spotted by 3 stations and spotted 1. I doubt there will be many more!

UPDATE 1927z: Now 4 stations spotting me with best DX PA0O (440km).