Kyle Lorenz said:
Yes, correct. I don't know the exact name and model because I threw away the box (dang it) but I do know it's basically an antenna that vehicles use as its made to mount on a car.
OK. So, it is a car antenna being adapted as an antenna for an AM radio in the shop. Is there two connection points on the radio, second being internal ground?
Try some experiments. Get that radio and antenna outside with an extension cord to the radio. Connect the antenna cable, center lead to the antenna on the radio and see., but you also have to hold that antenna so it is insulated from everything, or you will get more static
In a car, the center lead is nowhere near a ground. the coax type cable is used with the center conductor as the signal wire and the shield goes to ground and the car chassis.
You need a similar connection on that radio.
If the experiment works, you need another cable like that on the antenna to extend the range. Perhaps radio Shack?
It is doable but with a bit of experimentation as this is out of the ordinary