Just wanted to share a frustrating experience I had last night with my brand new Kestrel. I bought a HP Ipaq 211 PDA to run LoadBase 3 on and always had planned on buying a Kestrel 4500 with Bluetooth to use with it someday. Well thanks to the hide I managed to get one at a great price and everything was good, like a kid waiting for Christmas morning. I downloaded LB3 yesterday, opened the 4500, installed fresh new batteries, and went about the task of setting everything up but this is where it went south. I am 31 years old and love technology and have no problems setting stuff up but I literally tried for hours yesterday to connect the Kestrel with my PDA and even my laptop just to see if I could get a connection. After a few hours I finally gave up and decided to call Kestrel on Monday because it just wasn't going to happen. I woke up this morning and said screw it lets try it one last time... Turned on LB3, turned on the 4500, pushed the button and we have lift off! I have no freaking clue what has changed between last night and today but everything has synced up and is running smooth. I just wanted to share this since a lot of guys are moving to these and could have this exact problem. All I can say is that if you are having problems with the Bluetooth on you Kestrel just leave batteries in it, set it down, walk away for a while, and try it again later. Don't know why but it seems to work.