Quote Originally Posted by gobbler View Post
the birds automatically start deleting the oldest tracks once the memory is full, a warning will appear on the screen just before this occurs. have not had this affect the accuracy of my location on my map cards at all, i love mine and the accuracy is very very impressive and is spot on with the depth finder readings, though i have the external antenna also.
you are probably right gobbler...

This is the discussion I'm remembering...
Unofficial Humminbird Side Image Forums www.sideimageforums.com :: View topic - 997si trails about 30' offset- need help!

Rickie