I don't know how often this happens, but I bought 500 feet 2 years ago, we cut this into 100" lenghts as we had several 4 antenna's going up on two different towers. In the 500 ft we found two spots, what looked like double thickness of pvc coating. After it was all up on the tower on line was found to have an SWR that we couldn't deal with, taking back down to find this was a splice that had been badly done. There Customer Service was great, and the prices were good but, I haven't bought from them since. I felt two splices in 500 feet was beyond the norm. I complained but their attitude was a little different on the complaint than it was on the original purchase.