I'll take a break from Navtex and have a look for your 506.300 kHz. CW, despite the fact that Argo won't run in CW mode here due to a sound card issue. I'll try the QRSS3 Fast mode and see how it does. 73, J.B., VE3EAR LowFER Beacon "EAR" 188.830 kHz. QRSS30 EN93dr