GNS-430 ? Yes, you need an external CDI because course guidance from the
VOR, LOC, and GS receivers is never shown on its screen.

GNC-420 ? No, you don't need once because you can use the screen.



"Paul Lee" wrote in message
om...
Thinking of getting a Garmin GNC-430 and installing it in my experimental.
Is an external CDI required for the GNC-430 like it is for the 300XL?

Thanks for your help.

Paul Lee
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