472kHz WSPR

All day I have been on 472kHz WSPR and on 10m WSPR since mid-morning. Since mid-afternoon G8LCO (58km) has spotted my 5mW ERP several time. Last night at 0220z I was spotted by F1AFJ (607km). I think this is the second furthermost report of my 5mW ERP with the earth-electrode "antenna".  At some point I really must work out how many unique 472kHz WSPR spots I have had at this QTH. My best DX is over 1000km when I was spotted in Norway.