Dex has been transmitting since 1800Z or so, when his signal was decent ARGO copy at 1021 km. Now that skywave has kicked in the signal is very potent. Also note there is WSPR activity by WD2XSH/17 and WD2XSH/37 around 503.9 kHz. Tune your dial to 502.5 kHz USB to hear them. 73, Garry, K3SIW, EN52ta, Elgin, IL