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396 and 430w

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Joined
Dec 17, 2016
Messages
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Location
KPYM
Hello All - I have a 396 coupled with a 43ow. My 396 is showing a question mark when I start it up - no gps information. I posted on POA, and got the advice that it was probably the internal battery. My question is, how is the 430 communicating with the 396? I generally use the 396 for back up gps and to display my flight plans. I program the flight plans from the 430, and that information is now inaccurate on the 396 as well as the GPS question mark. Does the 396 and 430 share the same antenna? I am thinking that the data cable from the 396 is interfacing with the 430, and the 430 is hooked to the antenna. I would like to troubleshoot connections before sending it out. I have bananna hands, so will not be openning the 396 to replace the internal battery myself.

Thanks
 

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