GRT Avionics

Having slept on it, I'm now almost certain that the issue I'm having is the heading data from the SafeFly is not being converted to magnetic in the Sport SX, whereas the internal GPS data is. I can't find a setting to change that. My Sport SX is a legacy unit (pre adaptive AHRS), serial number 775, ...

Answering part of my own question, it appears that for some reason heading data from the SafeFly GPS is not being converted to magnetic from native true by the Sport SX. The magnetic variation here near the SF Bay area is about 14º, same as the error I'm seeing. Why is the internal GPS data being co...

I'm copying most of this from a post I made on the Vans Airforce forum in the hopes of catching the eye of someone who may look here but not peruse that forum... Avionics/gizmo background: GRT Sport SX EFIS, 7 years old, but latest software, with internal GPS (was an option when I bought the unit). ...

Updating this for others' benefit... I received an email from Jeff DeFouw a couple of days ago regarding this issue. Per Jeff: While the WS and HS models were very picky about USB sticks, the Sport SX units only have one requirement. As long as the stick is USB 2.0 High Speed, it should work. All of...

I've been using the SanDisk Cruzer USB stick that shipped with my Sport SX since it was delivered to me almost 3 years ago, to do software updates. I've at times tried all of the other dozen or so USB sticks I own to do the updates, but my EFIS never recognized any of them- luckily the SanDisk stick...