The gps and uhf transmitter run off a single battery don't they? Im guessing you would be out of luck if the battery died unless you have a second transmitter on the bird.
I really enjoyed the video post Tanner added the other day. I think the novelty of the unit is great. Reviewing a flight on a 3D map or watching in real time on the screen gives a whole new perspective.
However, Im more of a practical guy interested in its use as a recovery tool. I haven't seen to many posts about recovering a bird with the system. Maybe after a few months of field use we see more recovery posts. Not that I want anyone to loose a bird of course. Although it would be in the name of science.
Ryan S.