Originally Posted by ppakotze
I installed a commercial whip antenna on the last wing rib. Bent slightly backwards to fit in under the fibreglass wingtip. Trimmed whip to length using antenna anlyzer and achieved great match. Will be used for secondary comm, no in flight results to report back on yet.
Since com transmissions (unlike VOR) use vertical polarization, you also should have mounted it as high (or low) on the rib as possible; and then bent it (close to the rib) down (or up) as much as possible.