Seprate Power Supply for GPS Unit
I managed to get the GPS to work using a separate power supply, I used 2 AAA batteries that were giving 1.8v each the pic shows it all wired up but the wire came loose from the top of the PSP as I took the picture.
it also does seem to activate quicker, taking less than a minute to get a lock on 4 satellites
Link to the picture:
http://img382.imageshack.us/img382/404/dsc00387hp3.jpg
I'll give it a try with 3 AAA batteries and see if it gives better results
btw I'm doing all this at 111mhz as it still seems to be best for getting a lock on satellites quickly
Edit::
I've just tried it with 3 1.5v AAA batteries (In total giving 5.3-5.4v as they're new batteries) and it got 2 satellites in view instantly a few more within a few seconds and a lock soon after that. Seeing as there don't seem to be any immediate adverse affects I'll try seeing how it behaves while on the move