WOW! That's certainly a very solid signal, with no visible changes in the intensity across a full width of Argo screen. Maybe my taking the mower to the grass in a larger radius around the helix house did the trick. Thanks for the report and capture, Mike. 73, J.B., VE3EAR LowFER Beacon "EAR" 188.830 kHz. QRSS30 EN93dr