There has been varying degrees of success with the Archer antennas. I tried an Archer nav antenna in my wingtip (RV-8). It worked great until I put in Duckworks HID lights. At that time the range of the Archer antenna was reduced dramatically. I wound up with a Comant cat whisker nav antenna on the belly by the tailwheel with excellent results. Some folks love the Archers, others have had issues. YMMMV