Since I'm not to keen on AM, I built a J-pole antenna that is tunable to frequency ranges. When parked at the house, I like to listen to my favorite jazz station that has low broadcast power. The J-pole picks it up nicely. I mount the long J-pole on the side of my trailer using a steel spring tool holder screwed into a stud and through the siding. The signal connection is made through a coaxial fitting, connected to the radio inside and a short length of coaxial outside to the antenna. The antenna is made with 1/2" copper pipe.
About J-pole antennas