My strongest report (from Italy) was -9dB S/N. This implies just 5mW would have been enough if the receiving station had a nice, quiet noise floor.
UPDATE 1248z: Best DX today, so far, on 10m WSPR TX is IK0DMQ (1484km).
UPDATE 1522z: Well, I am surprised. Apparently my 10m 500mW WSPR beacon has been copied by 73 unique stations in the last 2 weeks.
UPDATE 1540z: A couple of reports (Italy and Germany) were 0dB S/N. This is very strong. Es definitely. Several hours later DK6UG was spotting me at up to +10dB S/N. Amazing.
UPDATE 1801z: 15 unique spots of my 10m, 500mW WSPR beacon so far today.
10m WSPR TX spots far today |