Having done two balloon launches, it is not that hard to find resources that specify what GPS modules will work and what ones won't work.
We used a
Garmin GPS 18
and it worked flawlessly (other than our night launch, where we recorded really low freezing temperatures and we think that our GPS froze because it stopped giving us data).
Our first launch got to 92k+ ft and the GPS kept reporting without issues.
We used a
Garmin GPS 18
and it worked flawlessly (other than our night launch, where we recorded really low freezing temperatures and we think that our GPS froze because it stopped giving us data).
Our first launch got to 92k+ ft and the GPS kept reporting without issues.