2: INSTALLATION
16 Iridium Pilot™ Installation Guide
Figure 8.
2.0 m (6.6 ft.) max.
unsupported height
3.2 mm (.125 in.) min.
wall thickness
60.3 mm (2.38 in.)
min. pole diameter
The ADE is supplied with an aluminum adaptor bracket used to couple the ADE to the mast and provides an
access hole to allow the circular connector to pass thru the bracket and connect to the ADE. A detail of the
adaptor is included herein to allow the mast to be fabricated with a matching bolt pattern. Note the bolt
pattern on the mast should form a square with two holes forward and two aft and NOT a diamond pattern with
a single hole forward and aft.
Galvanic Corrosion Protection
Note that the ADE base-plate and the mounting adaptor bracket are constructed out of aluminum. In most
installations the unit will be mounted on top of a steel stanchion. This transition area of dissimilar metals
provides for the potential of galvanic corrosion. For corrosion to occur there must be an electrical path and an
electrolyte (seawater). The dissimilar metals and the seawater create a very low voltage battery with the steel
acting as the cathode and the aluminum acting as the anode. The battery action causes an ionic transfer of
material from the anode to the cathode. This will cause the aluminum to corrode and dissolve at an accelerated
rate. There are two actions the installer can use to prevent this corrosion. See Appendix E for an assembly
drawing detailing the installation of the ADE with recommended galvanic isolation.
1. Create an electrical isolation barrier between the ADE base plates and mounting bracket or mast. Take
caution not to damage this barrier during installation. A coating of sealant such as 3-M brand 5200 marine
adhesive between the anges should be used. Stainless steel isolation washers should be used to keep bolt
head and lock washer from damaging the painted surface.
CAUTION
Damage to the paint coating may allow rust to the ADE which could result in failure of the ADE.
This in turn could cause disruption in operation of the Iridium Pilot device. Avoid damaging the
paint coating. If damage occurs, re-apply appropriate anti-corrosion primer and paint.
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