QSYed to 472kHz WSPR

After most of the day on 10m WSPR, I have now QSYed to 472kHz WSPR for the evening and night.  For some time I have had problems accessing WSPRnet. Again I am TXing with 5mW ERP and on RX for 80% of the time using the earth-electrode "antenna" with no preamp on RX.