just finished the antenna mount for my CB radio. I may make a black plastic cone to cover the area under the spring, since it looks too narrow there. I made this out of a piece of 6X6 1/8th wall square tubing and cut one side off. I bent the two sides tward each other, then welded the 3 inch tubing to it. I cut a piece of 1/8th inch flat stock on the lathe and welded that to the tubing. I wanted to make something like the original, but this was much easier and still in my opinion looks simple and something that the military would have used. Does anyone know how the original cable was run? If I remember right, it was run inside the box then down. I think that the cable would get smashed inside the box with cargo.