I previously installed the TED transponder antenna which is just a round rod with a ball on the end. When I purchased it, the blade antennas were far too expensive, so I just figured I’d live with the additional drag. After Dynon announced their ADS-B receiver, I realized I was going to need a second short antenna, so I looked around and found that another homebuilder had started making blade antennas for about a third the cost of the other brands. Reviews looked outstanding, so I ordered one of their transponder antennas as well as a 978MHz UAT antenna (which looks identical) for the ADS-B receiver. I’ll install that later once I decide where it will go.
This antenna is installed with a couple of #8 nuts and star washers, so I had to drill a couple of additional holes. Fortunately, I had made the doubler plate large enough that I didn’t come near the edges with the new holes.
