With limited space around my tower, I am looking to put the Force 12 Delta 140 C and Delta 130 C on the mast above my Force 12 3C on a single boom with two feedlines. Would appreciate anyone who has done this as to boom specs, distance between elements, etc. I will put it up at 90 degree angle to the C3, at about 55 feet. Steve Oksala NI3P