Hey thp, 'servas oida'! Looks like you've got proper skills, as I've been watching your progress re FM radio. Have you ever considered making a truly useful application like SMS editor so received and sent sms could be edited on the fly? That would be cool. Talking Vienna, such editor could be easily enough used to edit dates/time on Wiener Linien's Handytickets, for example. They never check checksums.

Thanks!