I cannot help with #1. You’ll need to see what protocol(s) the ELT can read, and if the G3x will output one of them.
#2 You are correct, the ELT will remember the last gps position it received.
PS. Just a comment on your comment. If your future includes an instrument rating, the approaches into LVK recently changed. Now, you need either an approach capable GPS, or an ILS receiver AND a DME. (Just for your future planning).
Last edited by BobTurner : 08-02-2018 at 03:35 PM.