Would that it were true, Mike. That nice tough epoxy paint on the antenna
and the nice smooth side of the head of a flathead screw rarely cuts through
to the metal of the antenna base. If you don't know the trick of grinding
down the paint inside the screw well to bare antenna base metal, those
screws aren't going to short anything out.

Jim



Effectively, the capacitor Jim mentions is shorted by the three/four
mounting bolts, so the mounting bolts must make a good electrical contact
with the aluminum skin on the inside of the aircraft. I like the NoAlOx,
too.