by tigerbangs on Sat Jan 30, 2010 2:28 pm
J-mounts usually don't provide enpough stability for a 4-bay antena. if you chimney is WAY below your roofline, then you can use a tripod, but if it's just a foot or 2 below the roofline, then you can use a chimney mount as long as it peers above the roofline. It's not unusual to use 2-5' sections of mast with a chimney mount if you need aditional height. Chimney mounts are flexible in that they can be monted to accommodate longer or shorter masts according to how tall your chimney is. 5' above the chimney is not excessive for an HD-4400, as the antenna is light and has a low profile to the wind.