NorthStar Navigation 10 kW - Manual (Page 17)

where:
Ls = distance to be moved from the keel line
D = diameter of the obstacle
R = distance between the antenna and the obstacle
3.3.5 Install an open array 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.
In this case, the base of the trestle must be installed parallel to the water surface. Orient the trestle so
that the main cabling from the scanner will face the stern. Make sure that the edges of the trestle
won't trap water.
If the trestle height (A) is less than 2 m high, use the angle joint method as shown:
If the trestle height (A) is more than 2 m high, install a radar mast secured with guy wires as shown:
Northstar 10 kW Radar Installation Manual 17