On 10/12/2021 11:14 AM, Shawn Donley wrote:
Where should the coax surge suppressors go? At the base of the tower or at the
shack entry box or both?
Where antennas are bonded to all the bonded grounds, where they enter
the shack. They protect the rig(s) two ways. First, by bonding the coax
shield, and second by shorting the center conductor to that ground.
The coax shield should be bonded to the tower at top and bottom, but an
arrestor at the tower is a waste of money.
Remembering that lightning is an RF event, not a DC event, a 130 ft long
bonding wire looks like an inductor, and is essentially a waste of
copper. It's only required if you have mains power at the tower, in
which case it must be run with the power conductors (as with Romex, or
in conduit).
The N0AX book is a great reference, to which I contributed.
73, Jim K9YC
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