Andrew 3.7-Meter Earth Station Antenna User Manual

Andrew Corporation10500 West 153rd StreetOrland Park, IL U.S.A. 60462Telephone: 708-349-3300FAX (U.S.A.): 1-800-349-5444Internet: http://www.andrew.co

InstallationSequenceChecklistSite PreparationGround MountAssemblyFor MPK TypesOnlyThe 3.7-Meter Earth Station Antenna requires the installation team t

For MPJK TypesOnlyMain ReflectorAssembly  Mount azimuth pivot assembly to ground mount assembly Bolt one jack to azimuth pivot assembly Unscrew jac

EnclosureAssembly Reflector-To-Mount Assembly  Add reflector-mounting ring Mount front and back hub-mounting rings Apply sealant to outside of refl

SubreflectorFeed System Preassemble subreflector weldment Attach subreflector-mounting ring to strut assembly Attach angle clips Attach subreflect

OverviewFoundationPreparation14Installation ProceduresThis section provides installation procedures for the 3.7-Meter Andrew Earth StationAntenna. The

A-325 TensioningStep 1Step 2Step 3Step 4Step 5Step 615During the installation process, there are several references to the A-325 hardware ten-sioning

MountUnpackingAssembly(Using a Crane)16The elevation/azimuth mount design simplifies installation, minimizes foundation require-ments, and enables hor

Step 1Step 2Step 3Step 417Carefully remove the ground mount assembly (P/N 208800 - motorizable or P/N202680-2 manual) from the packing crate. Leave th

Step 5Step 6Step 718Attach the ground mount assembly to the eight corresponding anchor bolts using a 3/4inch flat washer and 2-3/4 inch hex nuts as sh

Assembly(Without a Crane)Step 1Step 219As stated earlier, Andrew recommends the use of a crane during this installationprocess; however, we recognize

IntroductionHow to Use This ManualGetting StartedInstallationProceduresOperationPreventiveMaintenanceTable of Contents2Table of ContentsIntroduction .

Step 320Lift the ground mount assembly into an upright position. In the absence of a crane, it isrecommended that a minimum of two people assist in th

Step 4Step 5Step 621Figure 3-7: Mount Alignment/AdjustmentNOTE: You may need to adjust the mount when lifting it to ensure that the anchor boltsare al

MotorizablePedestal GroundMount AssemblyStep 1Step 2Step 3Step 422Installation ProceduresThe ground mount assembly enables 180° positioning for select

23Installation Procedures1/2” FlatWasher1/2 x 1-3/4”Bolt and NutUniversal Terminal5/16 x 3/4” Hex HeadScrew and Lock WasherGroundingCableFigure 3-8d:

Manual PedestalGround MountAssemblyStep 1Step 2 24Prepare the ground mount hardware in the mount hardware kit by sorting all bolts, nuts,and flat wash

Step 3 Step 425Position and mount the azimuth tiller arm (P/N 203112) to the tiller-arm bracket on theleft side (facing the satellite) of the ground m

Step 526Figure 3-12: Azimuth Tiller Arm - Final AssemblyLocate the elevation and azimuth struts (P/N 202951-2-manual) as shown in Figure 3-13.NOTE: Th

Step 6Step 7Step 827Installation ProceduresInsert pivot blocks (P/N 205876) onto the end of the azimuth strut using lubricated 1/2inch bolt, flatwashe

Step 928Installation ProceduresFigure 3-16: Azimuth Pivot AssemblyMount the azimuth strut to each bracket on the ground mount assembly as shown inFigu

29Installation ProceduresFigure 3-17b: Azimuth Strut Assembly - RearFigure 3-18 illustrates a final azimuth strut assembly mounted to the ground mount

IntroductionLike all Andrew earth station antennas, the 3.7-Meter Earth Station Antenna provideshigh gain and exceptional pattern characteristics. The

Step 10Step 1130Installation ProceduresFigure 3-19: Elevation Strut Pick Up Assembly (Top View)Bolt the elevation bracket-support plates (P/N 205873)

Step 1231Installation ProceduresThe elevation strut tube assembly should now be bolted to the elevation strut bracket asshown in Figure 3-21a and Figu

Manual ActuatorAssemblyStep 1Step 2Step 332Installation ProceduresThe manual actuator assembly (P/N 207882) is used to adjust the elevation andazimuth

Step 4Step 5Step 6Step 7Manual ActuatorAssembly RemovalStep 1Step 2Step 3MotorizablePedestal GroundMount AssemblyStep 133Installation ProceduresRemove

Step 2Step 334Installation ProceduresBolt one jack to the azimuth pivot assembly using 5/8 inch hardware (hex bolt, flatwash-er and hex nut) as shown

Step 4Step 5Step 6Step 735Installation ProceduresFigure 3-25b: Azimuth Jack AttachmentTighten the hardware using the A-325 tensioning procedure.Lubric

Step 8Step 936Installation ProceduresBolt the elevation pivot assembly brackets (P/N 208370 - left and P/N 208371 - right) tothe inside of the ground

Step 10Step 11Step 12Step 13Step 1437Installation ProceduresFigure 3-28b: Elevation JackLoosen the clamp on the jack boot.Unscrew the jack by using a

Embedded PipeGround MountAssemblyStep 138Installation ProceduresRefer to Figure 3-29a for an overall view of the assembled embedded pipe groundmount a

Step 2Elevation/AzimuthStrut AssemblyStep 339Installation ProceduresAttach the 104319 front frame to the left side frame as shown in Figure 3-29c. Att

Proprietary DataInformation andAssistanceNoticeTechnicalAssistanceThe technical data contained herein is proprietary to Andrew Corporation. It is inte

Step 440Installation ProceduresAttach the elevation strut to the top of the rear frame assembly as shown in Figure3-29e using the 100537-15 M20 x 50 b

Step 5Step 641Installation ProceduresAttach the azimuth strut to the bottom rear of the frame assembly as shown in Figure 3-29g, using the 100537-15 M

Step 742Installation ProceduresInstall fine az. adjustment, attach 40188-3 thread rod to 49712-3 bracket with 9999-167.75-10 nuts and 9997-166 flatwas

ReflectorUnpackingStep 1Step 243Installation ProceduresThe ground mount assembly is now completed with the necessary operational essen-tials. All grou

Step 3Step 4Step 5Step 644Installation ProceduresFigure 3-30b: Export PackFigure 3-30c: UnpackingPry the short ends of the crate off by using a pry ba

Step 7Step 8Step 9Step 10AssemblyStep 1Step 245Installation ProceduresLay the first half of the reflector (which has the flash located at twelve o’clo

Step 3Step 446Installation ProceduresInsert all of the joint-plate bolts, except for the socket-head shoulder bolts. All boltsshould be inserted from

Step 547Installation ProceduresFigure 3-33a: Alignment Bolt InsertionsFigure 3-33b: Alignment Bolt InsertionsAdd the alignment hex bolts to the end ho

Step 648Installation ProceduresFigure 3-33d: Alignment Bolt InsertionsTighten the hardware if the seam is correct starting from the center and working

Step 749Installation ProceduresAdd the reflector-mounting ring to the assembled reflector. Notice that the notches in themounting ring fit over the re

OverviewContentThe scope of this manual is intended to provide station personnel with the base installa-tion, operation, and maintenance requirements

Step 8Step 950Installation ProceduresMount the front (P/N 202790) and back hub-mounting ring (P/N 49965) to the reflectorwith the appropriate hardware

Alignment TestStep 1Step 2Step 3Step 451Installation ProceduresReposition the first string above the second string to check the accuracy of the first

Enclosure(Pedestal MountOnly)Step 152Installation ProceduresThe enclosure (P/N 202934A) assembly attaches to the rear of the reflector. The enclo-sure

Step 253Installation ProceduresRaise the enclosure assembly, and attach to the mounting ring on the reflector using theappropriate hardware as shown i

Step 3Step 4Step 554Installation ProceduresInstall the supplied sealant backing rod material around entire circumference of themounting ring/enclosure

Reflector-to-MountAssemblyUsing a CraneStep 1Step 255Installation ProceduresThe reflector can be installed on the mount manually or by using a crane.

Step 3Step 4Step 556Installation ProceduresVerify that all hoist assembly hardware is fully in tact before lifting the reflector to avoidpersonal inju

Without a CraneStep 1Step 257Installation ProceduresFigure 3-44c: Crane LiftThe following steps provide the procedure for installing the reflector to

Step 3Step 458Installation ProceduresFigure 3-45: Manual Lift of the Reflector to the MountPosition one person (of the three) on the mount to guide th

Step 5Step 659Installation ProceduresAlign the enclosure bracket to the ground mount assembly. The left bolt should beinserted to hold reflector in pl

OverviewWarningsThe installation, operation, and maintenance of the 3.7-Meter Earth Station Antennarequires qualified and experienced personnel. Andre

Step 7Step 8Step 9Step 1060Installation ProceduresFigure 3-49: Elevation Jack/Enclosure AttachmentTighten the hardware using the A-325 tensioning proc

61Installation ProceduresFigure 3-50a: Reflector to MountThe Reflector-to-Mount components can be verified and/or clarified in the following diagram.

You have now completed the attachment of the reflector to the ground mount assembly.Proceed to the instructions on assembling and attaching the subref

SubreflectorStep 163Installation ProceduresOnce the reflector has been assembled to the mount, the subreflector must be installed.Figure 3-51 presents

Step 264Installation ProceduresPosition and attach the subreflector-mounting ring (part of 205929 subreflector assem-bly) to the corresponding mountin

Step 365Installation ProceduresFigure 3-53b: Subreflector AssemblyAttach the angle clips (P/N 49187) around the reflector perimeter at the indicated p

Raise and attach the preassembled subreflector strut assemblies between the corre-sponding angle clips using a tag line as shown in Figure 3-54a. The

67Installation ProceduresSubreflectorStrutsEmbedded PipeGround MountAssemblyStep 1Step 2Step 3Step 4Loosely preassemble the 300056 Subreflector Struts

SubreflectorAdjustmentStep 1Step 2Step 3Step 4Step 568Installation ProceduresAfter the subreflector assembly has been attached to the reflector, the s

Step 6Step 7Step 869Installation ProceduresRepeat the entire procedure until all four noted positions indicate that the subreflectoraperture is set pa

RecommendedToolsNOTE: Failure to follow an installation procedure could result in damage to equipmentor personal injury.Additional warnings will be di

Step 9Step 10Step 11Feed System70Installation ProceduresObtain the corresponding measurements from the remaining subreflector struts, andadjust the su

OverviewAcquiring ASatelliteStep 1Step 2Step 3Step 4Step 5Step 6Step 771OperationAfter you have completed the assembly of your antenna, you are now re

72Figure 4-1: Pure Noise Signal on Spectrum AnalyzerFigure 4-2: Minimum transponder Signal on Spectrum AnalyzerOperation

Step 1Step 2Step 3Step 473The following steps provide the procedure for acquiring a satellite.Manually move the antenna in the azimuth (scanning back-

Step 5Step 6Step 7Step 874If the signal amplitude diminishes and does not increase (position B) to the level notedwhen the antenna was peaked on the s

Step 975With all 24 transponder signals of approximately equal amplitude appearing on thespectrum analyzer screen determine the specific antenna syste

Manual ActuatorAssembly RemovalStep 1Step 2Step 3Embedded PipeGround MountElevationAdjustmentStep 1Step 2AzimuthAdjustmentStep 1Conclusion76After you

SubreflectorAdjustment77OperationAfter the satellite has been acquired and testing has taken place with the spectrum analyzer,the subreflector may nee

OverviewGeneral CleaningElectrical Parts78Preventive MaintenanceThis section contains periodic preventive maintenance instructions for the 3.7-MeterEa

Mechanical PartsInspectionLocalControl/MotorDrive Controller79Clean mechanical parts by first removing dust, dirt, and other loose contaminants with a

Parts VerificationReportingEquipment Loss orDamageReporting VisibleLoss or DamageReportingConcealedDamage InventoryEquipmentReceivedUpon receipt of yo

Antenna 80• Check transformer for an excessive wax deposit on the surface, discoloration, or apungent odor indicative of burning vanish denoting overh

81• Operate the azimuth and elevation drives as well as the feed rotation in both the plusand minus direction from the local control/motor drive contr

Drive SystemVoltage andCurrent Checks Step 1 Step 2 Step 3 82• Check security of antenna mounting and interconnecting assembly hardware. Be cer-tain a

Step 4Step 5Step 6Step 7Step 8Step 9Pedestal MountBearing PadAdjustmentStep 1Step 2Step 3Step 4Step 583Repeat preceding step (3) with the FEED CCW/OFF

Preservation ofComponent PartsAluminum PartsGalvanizedSurfacesLubrication84When preserving the component parts, refer to the following paragraphs in t

Jackscrews/MotorsGearMotor/Housing FillDrainRequirements85remove any old lubricant to prevent an excessive build-up. Remove indicated accessplugs from

86Lube Service Lube Quantity AndrewPoint Parts to be Lubricated Action Frequency Type Type /Points Number1 Elevation jackscrew housing Lubricate Every

ReturningEquipmentStep 1 Step 2 Step 3 Step 4Step 5Andrew Corporation tries to ensure that all items arrive safe and in working order.Occasionally, de