KVH Industries TracPhone F55, Installation Manual

Page: 140 / 157

Appendix G: Grounding and RF protection
118 Alternative grounding for timber hulls
G.8 Alternative grounding for timber hulls
G.8.1 Grounding the BDU
The BDU must be grounded by means of the Antenna Pigtail Cable and the
Grounding Kit (accessories, TT-403088A-930). Further, the BDU must be
grounded at its grounding stud in order to ensure a proper grounding if the
pigtail is disconnected.
The ground connection must be established at a dedicated RF ground (either
capacitive or electrical coupled). Bear in mind that the ADU ground connection
is to be made at the
same electrical ground potential as the BDU (see
Grounding the ADU ).
G.8.2 Grounding the ADU
If the mounting base of the antenna is electrically connected to any other
ground potential than the BDU (e.g. Lightning Ground), the ADU must be
isolated at its mounting bolts by means of shoulder bushes and washers - see
page 123.
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 BDU Grounding Kit. A tinned heavy gauge wire (min. 6 mm
2
) can be used
for this purpose - see page 119.