This is part of where the confusion comes from. A "single point ground" is not just where all grounds tie together but it is the place or panel where all lines are physically located with no distance
Yes Mike, the tower ground system should be tied to your entrance panel/single point ground point. It always is anyway because of the coax lines that come from the tower. Coax lines should be bonded
Hi Phil, When you run any length of ground conductor over to your power entrance and you don't have your power run thru your single point ground panel, you technically don't have a single point grou
Aluminum will work just fine. There will not be enough difference in conductivity to matter. Just use a copper to aluminum past when mounting any copper conductors. 73 Gary K4FMX ____________________
Bill, I still maintain that the problem is that most do not know what a "single point ground system" is. As I said before it describes how the equipment is grounded and all of the lines going to and
You don't want anything sticking out of the concrete below grade. It will corrode and work its way into the concrete. 73 Gary K4FMX _______________________________________________ ___________________
Roger, What you describe "tying all the grounds together to form one ground system" makes for a common ground system but it does not make a single point ground system. You only have a single point g
While a grounded antenna is slightly more prone to taking a strike than one that is not grounded it is far better to ground it. With no ground lightning will find its way to earth, probably not by th
By below grade I mean under the soil. It is not a good idea to have any metal exiting concrete under the soil for reasons mentioned. The ground rod under the foundation will probably not have any use
I have seen a few concrete bases cracked from lightning strikes. These were all where there was no ground system attached to the tower at all. Just the tower attached to the J bolts in the concrete.
The chart from Jim is good to keep in mind when considering employing your verticals radial system as part of your lightning ground system. I see many worry that they should use large wire for the ra
Note that the reference, while they do make mention of lightning, is only dealing with DC and 60 Hz power ground systems. Deep ground rods can have good results at power line frequencies but as a li
Well thank you Doug! I didn't know that my credibility had a score card. It's so nice to know that someone is keeping track. It seems these answers are awfully important to you so I will oblige. You
Jim, Won't the inductance be greater because of mutual inductance between the parallel wires? Also Litz wire must be specially woven to be effective and then its benefits are only good at low freque
-- Hi Jim, I guess you are describing 2 conductors of the same original size so that the overall cross sectional area is doubled. I agree that the inductance would be less in that case, however not
You should mount them on a plate at the shack entrance and not at the tower. Do ground the shields of the coax to the tower at the base of the tower. Use a copper or aluminum plate to mount all your
Lightning energy can get onto the center conductor of the coax cable buried in the ground the same way that it gets there where it is hung on the tower when a grounded type antenna feed is used. Curr
Go to most any electrical supply house. They carry large plastic junction boxes in several sizes. One manufacturer is "carlon". I got several 12x12x8" boxes that I use. They have a screw down cover t
The biggest problem with joining copper to galvanized towers is that when it rains the copper ions from the copper will wash away the galvanized material. You want to avoid any bare copper on a tower
At the house, assuming you have an adequate ground system there. 73 Gary K4FMX _______________________________________________ _______________________________________________ TowerTalk mailing list T