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    GPS HSI performance w/ firmware 3.0.0?

    Version 3.0.0 issues with serial communications: YES ! I have a EFIS-D100, Garmin 530, Garmin 250 XL and a Navaid autopilot. I was running version 1.8 prior to this update, (144 hours of flight time on the efis) no issues. The D-100 receives serial data over pin 22 via a spst switch to...
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