Get the proper lenth Coax.Don't roll up the excess and tuck it out of the way.Becomes a Elecromagnetic Coil when you do this.Best thing is buy the coax and a couple end and make your own.Not hard,Just strip outside coating,Pull the braided shield back(like turning a sock inside out) over the coating behind it,Cut the inner core coating to expose teh Center wire,Now you can screw the connector over the Sheild wire.Once you get it down,trim the center wire that is now sticking out of the center of the Connector and put some solder on there to make sure you have a good connection.Lastly,if you run twin arieals(SP?) you must have them a spacific distance apart and the Coaxial must be Cophased.You can't just just put a splitter from Radio Shack cause the waves from one side will cancel out the other.