The good news is thanks to Bill Diaz, I think I have the numbers I need to generate a new set of geo files for all the Ridge images. I manually did the Key West one by hand, the registration looks perfect: http://www.findu.com/cgi-bin/radar-find.cgi? call=K4HG-8,*&radar=byx&zoom=4 I just need to write a Perl program to generate the other 155 of them. QRX Steve K4HG