I ran the antenna wire between and under the servos, then up to the fuselage top just behind the wing, and ran it through a piece of fuel tubing CA'ed through a hole in the top sheeting to protect it from rubbing. At the tail, I installed a small screw-eye and tied a rubber band through it to hold the antenna up, added another small piece of fuel tubing over the antenna wire, ran the wire through the rubber band, then back through the fuel tubing. It's a really easy way to add some protection and strain relief for the antenna wire, and doesn't affect range much if any at all.

(I'll upload pictures later)