I have had a police scanner for 30 years and used it infrequently when things were happening in the neighborhood. I found a deal on a discone scanner antenna and decided to get it and put it up outside. It fit a 1-3/8" pole and a quick check determined the top rail on my chain link fence would be a good choice. A couple people here confirmed that indeed top rail was a good way to go. Well I had received a $20 Lowe's gift card for getting an insurance quote from Traveler's so I went to the Lowe's site to look at the choices and prices of that top rail. Too funny!! There were a dozen reviews on the top rail I was looking at. All of them were about how good an antenna mast it makes.