Hi Neil, I use Navtex Decoder, which I found on the W3EEE web site. Just click on Navtex from the list at top left. There may be newer and fancier programs out there, but this one does it all for my needs and it's solid. 73, J.B., VE3EAR LowFER Beacon "EAR" 188.830 kHz. QRSS30 EN93dr