Originally Posted by
PapuaPilot
I have a G3X too. I put my antennas as follows:
-COM and ELT antennas on the top aft fuselage (my fuselage came with 2 mounting plates)
-ADSB in and transponder/ADSB out on the belly (3' apart)
-The small G3X GPS antenna (GA-26?) is under the glare sheild of the instrument panel. It plugs in the back of the GDU46 screen
-The GPS WAAS antenna for ADSB (GA-35) is under the turtle deck beneath the fabric of the baggage sack. I put a GPS-20 unit in that goes to my GTX-23ES transponder.
I put two 6" round aluminum ground planes with my transponder & ADSB in antennas (like the rectangle one already pictured). I grounded the disc to airframe ground and made sure the antenna ground made good contact with it too.
I kind of wish I had put the COM antenna inside the vertical stab. like other people have and my ELT antenna inside the tail. I hadn't found these suggestions until I had the fabric installed.