Alternative grounding for fibre glass hulls
F-6
F.5 Alternative grounding for fibre glass hulls
F.5.1 To ground the ACU
The ACU should be grounded as shown in this section. Further, the ACU must be
grounded at its grounding stud in order to ensure a proper grounding if the short ADU
cable is disconnected.
The ground connection must be established at a dedicated RF ground (either capacitive or
electrical coupled).
F.5.2 To ground the ADU
If the mounting base of the ADU is electrically connected to any other ground potential
than the ACU (e.g. Lightning Ground), the ADU must be isolated at its mounting bolts by
means of shoulder bushings and washers - see section F.6.3.
However, a ground connection must be established via one of the mounting bolts using a
separate ground cable. The ground cable must be routed parallel and in close proximity to
the shielded coax cable hence connecting the ADU to the ACU Grounding kit. A heavy
gauge wire with tinned strands (min. 6 mm
2
) can be used for this purpose.
Bear in mind that the ADU ground connection is to be
made at the same electrical ground potential as the
ACU (see To ground the ADU).
Figure F-5: Alternative grounding for fibreglass hulls
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