I am installing a Comant MB antenna in the wing tip of my -10. This antenna: http://www.skygeek.com/ci102.html I have fabricated a fiberglass shelf to mount it to and suspend in the center of the wing tip. The instructions say to make sure it is grounded properly. Since it is not touching anything metal,,,,,should I make a ground wire to attach to the wing rib or would it be better to carry the ground wire all the way back to the battery ground? I do not intend on using the airframe for my electrical grounds and am running ground wires for everything. Thanks folks.