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"I just had an
existing 430 converted to WAAS and added another new 430W to my stack.
According to the radio shop the antennas MUST be installed externally and in a
certain configuration (not next to one another). According to the shop
Garmin mandates that their authorized shops install them this way or not at
all."
About a year ago I helped a friend with a 430 to
430W upgrade on his Legacy. As I recall the upgrade included a new, higher
gain, antenna. We mounted it in the same place as his original antenna;
i.e. inside the wingtip. It's mounted on an aluminum plate that is
attached to the inside of the wingtip access panel and bent so that it places
the antenna near the upper surface of the wingtip skin. This was done
primarily to provide room for the TNC connector. His 430W is working
nicely.
Tom Gourley
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