Here are some pictures of my Antron 99 on my chimney. My house is on a big hill. The chimney is 30-35 feet above the base...but 100 or more relatively to the ground around. The antenna is 15-20 feet with an extra 3 feet of the mast...the mast is 10 feet, 3 feet is exposed above the chimney. I used 4 "W" brackets, with self tapping screws. I also ran a 40 foot grounding wire to the ground. There is a 10 foot copper grounding rod that we drove into the ground with a sledge hammer and a cap on top in the worst dirt in the state of PA. It is mostly shale. I used regular connections for the grounding wire. The coax is 50ft and temporarily goes through a window. I don't have my base station complete yet. My pictures could be found here on Google. http://picasaweb.google.com/mbrulo/Antenna