I've since learned that the unid digital signal used by the Cubans is DIGITRX, an amateur radio digital SSTV mode. The thing about this signal is that you can also use it to send other types of files, including text files. What's next, a Cuban sked in Hellschrieber? -- Tom Sevart N2UHC Frontenac, KS http://www.geocities.com/n2uhc