I would stick with the 8 bus runs length of which should be 1/3rd of this tower & Mast height and the usual 16 foot separation of 8' ground rods along those bus runs. Be sure to have one of those bus runs that connects to the other towers grounding systems.
That is what I was told by Polyphaser techs years ago for this three tower system that I have. Trangle of bus runs between the three towers. Bus runs outward from each of the towers no need for overlapping so none of the tower have 8 runs outward. Plus a single run with NO ground rods from the tallest tower to the Grounding window at the house where all lines come into the shack. That single run NOT to be close to the coax,rotor,switchbox lines. Plus of course the usual perimeter bus run of 16' separation of 8' rods around parts of the house where any power lines phone lines etc come to the house. All of the existing utility ground rods to be bonded to this perimeter bus run. Tallest tower/mast here is 170' Second tallest is 130' and only 80 feet from the tall one. I have seen that one take hits. The smallest is 88' and I don't know that it has ever taken a hit but it too is part of the total single ground system. John k9uwa > I have a full size vertical built from 25G running against about 80 1/4 > WL radials - #18 insulated wire sewn into the ground an inch or two > below ground. There is a single ground rod next to the base but no > other ground rods on this tower. > > 73/jeff/ac0c > alpha-charlie-zero-charlie > www.ac0c.com John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations k9...@arrl.net Visit our Web Site at: http://www.JohnJeanAntiqueRadio.com 4836 Ranch Road Leo, IN 46765 USA 1-260-637-6426 _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector