I had originally planned to use a pre-made Archer SA-009 marker beacon antenna, which is nothing more than a 40" length of copper tape and some hardware. Today, after looking at it, I decided to make my own. I got a 46" length of RG-400 coax, and stripped 40" of the shield layer from it, then crimpled on a BNC connector. Then I fabricated a small angle bracket for a BNC female-to-female pass-through connector. This bracket will be fiberglassed into the tip, and the existing coax wire in the wing will get a connector. This way, I can easily remove the wingtip.
By the way, stripping 40" of RG-400 is a BEAR. It took me far langer that I expected, even using a coax stripper tool. I had to go about 1/2" inch at a time.
