I found a replacement @ wallyworld. Its a rubber antenna and screws into the existing stud, all for a cost of around 8 bucks! It should work and if it hits an overpass, it should survive the impact and keep on going, if not, its only 8 bucks! I will climb up onto the roof this weekend and out it to the test.
2008 Dodge Ram 4X4 Quad cab LB 2500 Cummins 6.7L TD / 2013 Columbus 320rs. Camped 50 days in 2015. RIP Angel the camping Cat, we will miss you.