paul k. sanchez wrote:
Could you please explain how you can activate the vertical navigation function
on the GX55 when it does not have an altitude serializer input? Also how does
the GX55 know that you are above or below someone's airspace and therefor not
warn you about the class C airspace because you are 4300' agl?

If there's no serialized altitude input, the unit would just use the
calculated GPS altitude. It's not as accurate, but it should work.

-- Jay


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