Grounding with a tower glued to the top
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I am seeking advice where the RF feedline grounding/lightning arrestor block should be mounted to.
I'm working on a project where the ham station is in the mezzanine of a warehouse where the tower was installed on TOP of the roof, with a seriously over-engineered mount in the middle of the building metal structure.
The entire building has a ground rod ring around it that are connected to a 6" copper strap that? does not NOT contact to the building.
Near the coax entry point there is a building structural I-beam.
The copper ground strap comes up along the outside side of the building, galvanically isolated, through a plastic tube and junction box, into the shack.
So, for best lightning/EMP protection:
1. should the ground strap be sandwiched between the building i-beam and the ground block, or, 2. should the ground block be connected to the copper strap secured by some kind of isolating material from the metal building?
If typing words is not your forte'; email direct for my cell number.
Benjamin, KB9LFZ
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KB9LFZ