Group: Forum Members
Yes, this was my understanding as well. Although, I read that while in flight, even the cellular model should be used with an external GPS, thus making it more reliable since the internal GPS was designed to be used on the ground. The argument was made that the internal GPS in flight is prone to dropping connection when screens are changed or if the iPad goes into sleep mode. There was further discussion (which prompted my question) about how the cellular iPad, being equipped with a GPS, interpreted incoming data from an external GPS more readily than the WiFi only model, making less prone to problems.
Enter the cost comparison. If the WiFi only model actually works very well with an external GPS, I would go with it. But if the cellular model has less issues with incoming GPS data, I would bite the bullet and shell out the extra clams even with an external GPS.
Guess I was looking for some users experience with the wifi only model, in the end it could save me about 130 euros, which would pay for the external GPS. I'm a student pilot so the whole in flight GPS with an iPad thing is new to me. I just want to get it right the first time, flight training is expensive enough as you all know.
Edit: Looking to use this with the Dual XGPS150A unit and SkyDemon.