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2.6
Install a scanner on a trestle
Depending on your chosen location for the scanner, it may be easier to install the scanner if you
fabricate a trestle (or radar mast) on which you can mount the scanner.
The trestle must be sturdy and secure, and capable of supporting the scanner in all weather
conditions.
You are recommended to install the base of the trestle parallel to the water surface.
Orient the trestle so that the cable inlet on the scanner will face the stern, and so that the scanner can
be mounted at the correct angle (as discussed in the "Power boat installation" section).
Make sure that the edges of the trestle won't trap water.
2.7
Install the 6 kW scanner unit
IMPORTANT: Remember that you must screw the bolts into place from the underside of the location
site, because the shape of the scanner prevents you from installing the bolts from the topside. Ensure
that you can access the underside of the location site before drilling.
Tape the paper installation template securely to the chosen location site. Before drilling, check that:
the location site is not more than 0.6" (15 mm) thick, to ensure that you can use the bolts
supplied.
you've oriented the template correctly so that the front of the scanner unit faces the bow
and the cable inlet faces the stern.
Drill the four bolt holes then remove the template and position the scanner over the bolt holes.
Slide a plain washer onto a bolt, then push the bolt up through the drill hole and the scanner bolt
hole, working from the underside of the location site.
Hold the bolt in place and slide a brass washer, a plain washer, and then a spring washer over the
bolt. Screw two nuts onto the bolt to secure it.
Repeat this for procedure for each bolt, then tighten all the nuts so that the scanner is secure.
NOTE: Use the bolts supplied as these are hardened stainless steel and the correct length.
Northstar 6 kW Radar Installation Manual
13
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