The early, front-of-the-roof "whip" style antenna was busted when I got the car.
The fiberglass shaft was splintered:
I wonder if it got snapped in an automatic car wash.
It had been broken long enough that the paint on the roof of the car is scuffed a bit from it swinging back & forth. The only thing holding the 2 parts together was a few hairs of fiberglass and the metal wire.
Also, reception was terrible. I'm not sure why. Because the metal wire at the break was fully exposed to the elements? I know squat about how antennas work.
I checked the continuity of the wire running from the mounting threads to the tip, and it was OK, so I McGyvered it back together thusly:
I cut the body of a black ballpoint pen to fit, slid it into place and filled it with epoxy to make a splint over the the shattered section.
Happy to report it's sturdy, and radio reception is perfect now.