Thescannermustalsobemountedwhereitis:
•Aboveheadheight.
•Easilyaccessible.
•Asnearaspossibletotheboat'scenterline.
•Onarigidandstableplatform,capableofsecurely
supportingthescannerunderseagoingconditions.
•Clearoflargeobjectssuchastheybridge,large
enginestacks,searchlights,horns,mastsetc.
(seeShadowareasandfalseechoesforadditional
information)
•Clearofheatandfumes.
•Atleast1m(3ft)fromamagneticcompassor
otherscanners.
Shadowareasandfalseechoes
MounttheRadarscannerawayfromlargestructures
orequipment,suchasenginestacks,searchlights,
horns,ormasts.Theseobjectsmaycauseshadow
areasandfalseechoes.Forexample,ifyou
mounttheRadarscanneronamast,echoesfrom
othertargetsmaybereectedfromthemast.Wet
sailsmayalsocauseshadowareas,soRadar
performancemaybereducedintherain.Itis
particularlyimportanttoavoidshadowareasnearthe
bow.RaisingorevenloweringtheRadarscanner
mayhelptoreducetheseeffects.
Inshadowareasbeyondtheobstructiontherewillbe
areductionofthebeamintensity.Theremaybea
blindsectorifthebeamintensityisnotsufcientto
obtainanechofromanobject.Thismayoccureven
atcloserange.Forthisreasontheangularwidth
andrelativebearingofanyshadowareamustbe
determinedatinstallation.
Youmaybeabletodetectshadowareasorfalse
echoesonyourmultifunctiondisplay.Forexample,
seacluttercanbeusedasagoodindicatorofblind
arcs.DarksectorsontheRadardisplayindicate
Planningtheinstallation
19
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