> Actually, Tom, quite the contrary....All of my cables are
> bonded at the
> top of the tower AND at the bottom of the tower. There's
> only 15 feet
> between the tower and the entrance panel.
....and the entrance panel is bonded to the shack cable
entrance how?
> All the cables come through a Microflect entrance panel
> and go directly
> to a SPGP where all of the Polyphasers are mounted. Each
> piece of radio
> gear has a separate bond that goes to the SPGP also. The
> entrance panel
> is bonded to the grounding field via two 6" wide copper
> straps.
> Therefore the total square inches of cable entering the
> shack equals or
> is less than the total area of bonding strap leaving the
> shack.
>
> I'm leaning towards the EMP as the culprit. It's the only
> potential
> hazard I didn't address by putting a Halo around the shack
> since my
> shack is right under the tower cone.
I have a halo ground buss. It's buried copper tubing that
circles my house. I wouldn't be without it, even though the
only ground rods are at the power line entrance.
I also do a double layer of entrance ground. The one inside
bonds all cables in and out to a single operating desk entry
point along with power line and telco grounds. Every
TV/Stereo setup has a similar construction.
Personally, I'd never run a separate ground lead from each
piece of gear to the outside entrance panel ground.
73, Tom
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