I had been looking for a while for a Bluetooth GPS for my Windows Mobile phone.  I knew nothing about GPS’s.  But here where my requirements based purely on spec:

1. MTK 32 channel
2. Long battery life
3. Bluetooth
4. external antennae.
5. mini-usb style charger
6. Also solar would be cool?

I really did my research, but unfortunately most of the stuff is a little out of date:

http://www.pocketpcmag.com/_archives/Dec06/GPSSolutions.aspx

http://www.pocketpcmag.com/_archives/may05/garmin.aspx

http://discussion.buygpsnow.com/forums/thread/4243.aspx

http://www.tomtom.com/products/category.php?ID=2&Language=4 - $250

http://www.alk.com/copilot/pocketpc.asp - $250

https://buy.garmin.com/gmbg - $199

http://www.windowsfordevices.com/news/NS8534894948.html

Well I finally purchased one!!

http://www.f-tech.com.tw/Eng/Index.htm

http://www.dg-kit.com/index.php?act=viewProd&productId=3&ccSID=22c1d6c5af9823f8507410797fd7c535

http://www.skylab-mobilesystems.com/en/products/mobiletracker_windows_mobile.html

I decided not to buy any mapping software but just use either Google Maps or Windows Live.  I settled on Windows Live for some other functionality they include and it works great.  That is after I figure out how to configure it (http://www.db75.com/new_blog/?p=235) – this should be much easier!  However, I did learn that while tracking yourself on the maps (which are downloaded from the internet) using EVDO, that I can not receive calls.  CDMA will have to fix this!

The reason I got a GPS is that I wanted to try a couple of cool .Net apps.  First, I thought I would create a compass application.  Well of course someone already has done that (http://www.db75.com/bluegps/) and it looks like he is working on cool stuff! - http://www.db75.com/new_blog/  The disappointment that I should have forseen is that this compass only works when you are moving.  Oh well.  I also wanted to create an application that simply logged a GPS location periodically and try to mash it up with Google Maps.  Still working on that one.  Finally I thought that I could use the GPS data to sync up with times on my photos and add location information to my pictures (http://gizmodo.com/gadgets/digital-cameras/sony-gpscs1-tags-photos-with-location-191454.php).  And eventually be able to trigger on a photo on the phone and grab the gps location.

There are many more applications (like GeoCaching) that I am still learning about.  Much more to do with GPS that I ever thought.  One of the most interesting though has to be http://www.pocketgpsworld.com/ which alarms (should SMS?) when nearing speed trap camera!