Alcoma ZENITH 80 - Page 23

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MicrowaveradiorelaylinkZENITH80 
 23/52 1.2
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Figure14 AttachmentofAL1‐80/APR(AL2‐80/APR)antennaholder
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TheattachmentofODUwithantennamustbesufficiently rigidtowithstand windactingontheODU 
withoutmakingthelinktopointinawrongdirection(themainlobewidthis±0,4°and±0,2°).Theseforces
areprimarily
causedbythefrontwindresistanceofthemicrowaveantenna.
The ODU box is installed with the gromet of connection cab le pointing down with the horizontal
polarizationortothesidewiththeverticalone.Itisneverinstalledwiththegrometpointingup.
Possibledisassemblycanbeperformedwithout
affectingthelinkpointingdirection.
For easy pulling up of ODU with the antenna to a mast or a support pipe, lifting lug that is approx.
abovethecenterofgravityofthissystemcanbeused.
Pleasenotethat,accordingtotheSafetyNoticesworkersmustbeequippedby
PPE,especiallyahard
hat,duringworkonmastsandintheirproximity.
Firm tightening of all connections of an antenna system must be checked after installation. We
especially note the tightening of the antenna unit brackets to the antenna support pi pe and of the bolts
thatsecuretheverticalsetting.
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BoltM10
Loosenwhileverticalpointing
BoltsM10
Fixingofantenna
bracketstosupportingpipe
BoltM10
(fineverticaltuning±20°)
Nut M10
(finehorizontaltuning±20°)
BoltsM10
Loosenwhilehorizontalpointing
Supportingpipe
Ø42÷120mm