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89cm/98cm Ku-BAND Rx/Tx ANTENNA SYSTEM - General Dynamics

89cm/98cm Ku-BAND Rx/Tx ANTENNA SYSTEM - General Dynamics

General

General Dynamics SATCOM Technologies4096-62989cm/98cm Ku-BAND Rx/Tx[ 5 ][ 5 ][ 6 ][ 7 ]Reflector[ 3 ]Feed RodDetail AFeed Rods[ 4 ][ 5 ][ 7 ]Reflector[ 5 ][ 6 ]Feed Support Tube[ 7 ]Detail B[ 6 ]Feed Support Tube[ 5 ]Detail C[ 3 ]13

General Dynamics SATCOM Technologies4096-62989cm/98cm Ku-BAND Rx/TxSECTION IIIANTENNA POINTING3.0 ANTENNA POINTINGThe .89/ meter reflector contains a 16° elevation offset look angle. Therefore,when the reflector aperture is perpendicular to the ground, the antenna is actuallylooking 16° in elevation. Refer to Figure 2. NOTE: The .98M reflector containsa 17.35° offset look angle.Note: The following alignment procedure is intended only as a general referenceguide for this antenna. For proper antenna performance, accuratealignment is critical. Therefore, it is recommended that your own detailedprocedure be used or contact General Dynamics Technical SupportDepartment for additional recommendations.STEP 1:STEP 2:STEP 3:STEP 4:STEP 5:BEFORE ADJUSTING ELEVATION LOOSEN THE HARDWARE ONBOTH SIDES OF THE POSITIONER, REFER TO FIGURE 2 FORLOCATION. Adjust the reflector up or down in elevation by turning the5/16” Bolt at the az/el positioner until the desired elevation is read on theside of the positioner. This scale is used for nominal readings and isaccurate to ±2 degrees. Note: Elevation rod is for adjustment only, itis not intended to be part of the structural integrity of the assembly,tightening the elevation rod is not necessary. Snug the hardware atthe side of the positioner.Azimuth Adjustment: With the electronics set to acquire the satellite,rotate the antenna in azimuth until the satellite is found. Tighten thecanister hardware at this time.Fine azimuth adjustment is achieved by loosening the three hex nutsinside the Az/el positioner and turning the single hex bolt at the back ofthe positioner in either direction. Note: Azimuth rod is for adjustmentonly, it is not intended to be part of the structural integrity of theassembly, tightening the azimuth rod is not necessary.Peak the antenna signal by fine adjustments made in both azimuth andelevation until the optimum signal is achieved.Tighten all hardware used for adjustment.14

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