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Chapter 2 • Antenna parts and required tools

 

8

1037749-0001  Revision B

The main components of the antenna kit are:

•

Az/El mount assembly

•

Reflector bracket

•

Antenna reflector

•

Feed support arm

•

Radio assembly

•

Feed horn

Related components (not shown):

•

Tri-mast or other mount

The following sections describe each component of the antenna 
kit.

Figure 2:  Antenna kit components

Note:

The radio assembly is shipped separately and may not 

arrive at the same time as the other two cartons. 

Summary of Contents for AN8-074P

Page 1: ...1037749 0001 Revision B September 12 2008 74m Ka Band Antenna Installation Guide Model AN8 074P ...

Page 2: ...ot be liable for errors contained herein The information in this document is subject to change without notice Hughes Network Systems LLC makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Trademarks Hughes HughesNet Hughes Network Systems and SPACEWAY are trademarks of Hughes Network...

Page 3: ...used in this manual This section introduces the various types of warnings used in this manual to alert you to possible safety hazards DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous ...

Page 4: ...ort arm radio transmitter and antenna reflector respectively These labels advise that the antenna emits radio frequency RF energy Because of this potential safety hazard observe all cautions on these labels and in the next section Antenna installation safety Feed support arm Reflector back side Transmitter Safety alert labels on the antenna assembly ...

Page 5: ... the antenna assembly and installation surface are structurally sound so that they can support all loads equipment weight ice and wind Use safety equipment for example a lifeline appropriate for the work location Follow all manufacturer safety precautions for all safety and other equipment used Perform as many procedures as possible on the ground DANGER To avoid electric shock stay at least 20 ft ...

Page 6: ...g forces on the antenna surface CAUTION If the antenna or mount assembly begins to fall during the installation do not attempt to catch it Move away and let it fall WARNING Antennas that have been improperly installed or attached to an unstable structure are susceptible to wind damage which can be very serious or even life threatening The product owner and installer assume full responsibility that...

Page 7: ...which a person might be expected to stand and 3 ft 3 inches from any opening such as a door or window in a building or adjacent structure The antenna must be mounted such that no object that could reasonably be expected to support a person is within 6 ft 7 inches of the edges of a cylindrical space projecting outward from the antenna reflector toward the satellite If the above distance requirement...

Page 8: ...utional environment must carry a Radiation Hazard Caution sign on the access door gate or permanently mounted access ladder within plain sight of anyone approaching the antenna from the front or sides of the reflector Failure to observe these cautions could result in injury to eyes or other personal injury Note Some installations may require additional precautions See the HughesNet System Antenna ...

Page 9: ...ed cables 5 Chapter 2 Antenna parts and required tools 7 Antenna kit components 7 Az El mount assembly 9 Reflector bracket and tilt plate 10 Antenna reflector 10 Feed support arm 11 Radio assembly 11 Feed horn 12 Related Components 12 Tri mast or other antenna mount 12 Small hardware parts list 13 Tools 14 Chapter 3 Installing the antenna and radio assembly 15 Determining the pointing values 15 Ge...

Page 10: ...pipe 29 Chapter 4 Cabling and connections 33 Cabling requirements 33 Routing the cables at the antenna 34 Connecting the transmit and receive cables 35 Transmit cable 36 Receive cable 36 Ground connections 37 Chapter 5 Adjusting the antenna azimuth and elevation 39 Adjusting the elevation 40 Adjusting the azimuth 42 Acronyms and abbreviations 45 Index 47 ...

Page 11: ...a reflector 19 13 Attaching the feed support arm to the tailpiece 20 14 Positioning the radio and feed horn brackets 21 15 Attaching the radio assembly 22 16 Securing the rear of the radio assembly 23 17 Determining the polarization setting 24 18 Adjusting circular polarization collar removed 25 19 Securing the waveguide collar 26 20 Remove the protective seal from the polarizer 27 21 Aligning the...

Page 12: ...eceive cable configurations 34 28 Weatherproofing the cable connectors 35 29 Transmit connector 36 30 Receive connector 37 31 Ground screw on the Az El mount 38 Chapter 5 32 Elevation adjustment components 40 33 Elevation marker 41 34 Azimuth adjustmen components 42 ...

Page 13: ... Tables 1037749 0001 Revision B xiii Tables Chapter 2 1 Small hardware parts 13 2 Tools required to assemble and install the antenna 14 Chapter 3 3 Torque specifications 16 ...

Page 14: ... Tables xiv 1037749 0001 Revision B ...

Page 15: ...cluded in the following sections The model AN8 074P antenna on page 1 Antenna installation summary on page 2 Tasks related to antenna installation on page 4 The model AN8 074P antenna Each HughesNet antenna station consists of an antenna assembly and an indoor unit IDU which can be either a satellite modem or a satellite router The IDU at a customer site requires an antenna and radio assembly to c...

Page 16: ...the installation process to the customer 2 Conduct a site survey with the customer to identify a suitable location for the antenna See the HughesNet Antenna Site Preparation and Mount Installation Guide 1035678 0001 for details 3 Install and apply power to the IDU following the instructions in the installation guide for the specific IDU you are installing Figure 1 The Hughes model AN8 074P 74m sat...

Page 17: ...radio assembly See Chapter 3 Installing the antenna and radio assembly 10 Install the feed horn See Chapter 3 Installing the antenna and radio assembly 11 Attach the Az El mount and antenna assembly to the antenna mast pipe See Chapter 3 Installing the antenna and radio assembly 12 Install the IFL transmit and receive cables between the IDU and the antenna See Chapter 4 Cabling and connections 13 ...

Page 18: ...le As with any other type of construction a local building permit may be required before installing the antenna It is the property owner s responsibility to obtain all permits If necessary modify the installation instructions in this manual in accordance with local building codes Installing the antenna mount Before installing the antenna itself you must first install a suitable antenna mount If th...

Page 19: ...tenna assembly must be grounded For grounding information refer to your training best grounding practices the Hughes Field Service Bulletin FSB HNS Broadband Requirements for RG 6 and RG 11 IFL Cable Connectors Ground Blocks and Ground Block Location FSB 050518_01 and applicable parts of the National Electrical Code NEC Approved cables For a list of approved coaxial cable types for the IFL between...

Page 20: ...Chapter 1 Overview 6 1037749 0001 Revision B ...

Page 21: ... page 7 Small hardware parts list on page 13 Tools on page 14 Antenna kit components This section identifies and describes the main components of the 74m Ka band antenna kit The antenna kit is shipped in three containers Figure 2 identifies the contents of each container CAUTION Metal components may contain sharp edges Use care when un packing and handling antenna parts Note To avoid potential dam...

Page 22: ...Reflector bracket Antenna reflector Feed support arm Radio assembly Feed horn Related components not shown Tri mast or other mount The following sections describe each component of the antenna kit Figure 2 Antenna kit components Note The radio assembly is shipped separately and may not arrive at the same time as the other two cartons ...

Page 23: ...El canister the elevation scale and the fine azimuth and fine elevation tools The Az El canister supports the antenna The elevation scale is used to coarse point the antenna in the azimuth plane The fine azimuth and elevation tools are used to finely adjust the azimuth and elevation of the reflector during antenna pointing Figure 3 Az El mount assembly ...

Page 24: ...or to rotate so that it can be adjusted for proper tilt The reflector bracket and tilt plate attach to the Az El mount assembly Figure 4 shows the reflector bracket and tilt plate Antenna reflector The antenna reflector shown in Figure 5 focuses the transmitted and received RF signals It attaches to the reflector bracket Figure 4 Reflector bracket and tilt plate Figure 5 Antenna reflector ...

Page 25: ...aches to the reflector bracket Radio assembly The radio assembly shown in Figure 7 consists of the radio transmitter low noise block converter LNB transmit receive isolation assembly TRIA and polarizing waveguide CAUTION To avoid damage to the antenna reflector handle it with care After assembly do not use the reflector to rotate the antenna Figure 6 Feed support arm Figure 7 Radio assembly ...

Page 26: ...is not part of the antenna kit it is described here because it is the most commonly used mounting option for the AN8 074P Ka band antenna As shown in Figure 9 the tri mast can be positioned in a number of configurations to adapt it for mounting onto surfaces of various angles For other suitable antenna mounting options see the HughesNet system Antenna Site Preparation and Mount Installation Guide ...

Page 27: ...ed flange nut 5 16 inch inside diameter 4 1 4 inch slotted screw 7 16 inch hex head 1 Parts shipped in bag 0200 1379 1 4 1 inch hex bolt 7 16 inch hex head 2 Feed support arm to reflector bracket Figure 13 on page 20 1 4 inch flat washer 2 1 4 inch lock washer 2 1 4 inch hex nut 2 1 4 1 inch hex bolt 7 16 inch hex head 1 Feed horn support bracket and adapter bracket long to feed support arm Figure...

Page 28: ...equire a second wrench to prevent turning Torque wrench With inch and 7 16 inch sockets capable of torquing to 8 ft lb Long shaft hexagonal ball driver 7 64 inch For 6 32 Allen screws Driver shaft should be at least 5 inches long Phillips head screwdriver 1 4 inch For screw used to help secure antenna reflector to reflector bracket Bubble level Used to make sure that the mast is plumb Compass Used...

Page 29: ...embly onto the mast pipe on page 29 Determining the pointing values Before installing the antenna you must install and power up the IDU Refer to the appropriate IDU installation guide for instructions Once the IDU is operational connect it to your laptop using an Ethernet cable then use your global positioning system GPS receiver to calculate the exact latitude and longitude of the antenna site Fo...

Page 30: ...low the instructions in this chapter in the order they are presented Tightening hardware Do not tighten any nuts or other hardware until instructed to do so See also the next item Torque Torque To ensure successful installation of the antenna it is critical that you tighten all nuts and socket head screws to the torque values shown in Table 3 Note The mast diameter must be 2 5 inch nominal pipe si...

Page 31: ...g holes on the Az El mount Because the hole pattern in the tilt plate is not symmetrical be sure that the tilt plate notch is at the top so that you can line up the holes correctly 3 Insert four carriage bolts 5 16 inch inch with inch hex head into the holes in the tilt plate and through the holes in the Az El mount You are going to bolt the tilt plate to the Az El mount with the reflector bracket...

Page 32: ...assembly tilt pointer as shown in Figure 11 Installing the antenna reflector To attach the antenna reflector to the reflector bracket 1 Hold the reflector against the reflector bracket so that the tailpiece notch is near the reflector bracket arm as shown in Figure 12 2 Insert four carriage bolts 5 16 inch inch with inch hex head into the holes in the reflector and through the corresponding holes ...

Page 33: ...ew 5 From the back of the reflector bracket secure the four bolts with four inch hex flange nuts and tighten Installing the feed support arm To install the feed support arm 1 Insert the feed support arm into the bottom section of the reflector bracket as shown in Figure 13 2 Insert two 1 4 inch 1 inch bolts with 7 16 inch hex heads down through the tailpiece into the feed support arm Figure 12 Att...

Page 34: ...lt and tighten until secure 4 Check to make sure that the tailpiece does not shift from its proper position or become misaligned in the reflector bracket when pressure is applied to the feed support arm If the tailpiece shifts you must re align it and tighten the bolts more securely Figure 13 Attaching the feed support arm to the tailpiece ...

Page 35: ...ter bracket on the feed support arm so that the bolt fits through the hole 3 Position the feed horn support bracket above the long adapter bracket on the feed support arm as shown in Figure 14 4 Attach the two pieces to the feed support arm by connecting a inch nut to the bolt from above and secure 5 Position the radio assembly above the long adapter bracket so that the waveguide end of the radio ...

Page 36: ... feed support arm and long adapter bracket and into the threaded socket on the front of the transmitter 7 Tighten only enough to hold the radio in place Figure 15 Attaching the radio assembly CAUTION Tighten the nut only enough to secure the radio and adapter bracket to the feed support arm Excessive tightening of this nut can crack or crush the adapter bracket ...

Page 37: ...her up through the feed support arm and the short adapter bracket into the threaded socket on the transmitter 10 Tighten the bolt to secure the bracket and radio to the feed support arm Tighten only until snug Do not tighten fully until instructed to do so Figure 16 Securing the rear of the radio assembly CAUTION Tighten the nut only enough to secure the radio and adapter bracket to the feed suppo...

Page 38: ...setting is required check the position of the polarizer waveguide to determine whether an adjustment is necessary From the rear of the radio looking toward the reflector you can easily determine whether the polarizer is currently set for LHCP or RHCP by the way it leans See Figure 17 To reposition the polarizer 1 Remove the two piece polarizer collar by loosening and removing the two Allen screws ...

Page 39: ... notch is adjacent to the R on the polarizer 3 Reseat the waveguide with the TRIA and reassemble the collar When properly installed both halves of the collar should join along the ridges on opposite sides of the waveguide as shown in Figure 19 Each half of the collar is notched to fit securely over the waveguide ridge Figure 18 Adjusting circular polarization collar removed ...

Page 40: ...Chapter 3 Installing the antenna and radio assembly 26 1037749 0001 Revision B Figure 19 Securing the waveguide collar ...

Page 41: ...om the polarizer on the radio assembly shown in Figure 20 2 Remove the dust cap from the stem of the feed horn and insert the O ring into the groove inside the stem 3 Place the feed horn on the feed horn support bracket so that the holes on either side of the feed horn fit into the corresponding pins on the bracket as shown in Figure 21 Figure 20 Remove the protective seal from the polarizer ...

Page 42: ...otate the collar until it seats into the notch on the feed horn You must locate the notch before fully assembling the collar Failure to do so will result in damage to the polarizer waveguide When properly aligned the two halves of the collar will line up with the seam on the polarizer waveguide as shown in Figure 23 Figure 21 Aligning the feed horn on the adapter bracket Figure 22 Radio assembly a...

Page 43: ...t this point fully tighten any hardware that is not tight except for any nuts that are used for pointing adjustments Leave such nuts either slightly loose or just snug Installing the antenna assembly onto the mast pipe Follow these steps to install the assembled antenna assembly onto the mast pipe 1 Before you install the Az El mount assembly onto the mast pipe use a bubble level to make sure that...

Page 44: ... 24 Making sure the mast is plumb T0144012 Top view To make sure the mast is plumb check with the level in two positions at right angles to each other Level Mast 2nd level position Mast Bubble must be centered between marks Bubble level Side view Note The mast diameter must be 2 5 inch nominal pipe size 2 88 inch outside diameter Figure 25 Installing the Az El mount assembly ...

Page 45: ...ly phase of the antenna installation process Depending on its orientation the antenna should look similar to the one shown in Figure 26 To proceed with the installation you must route the IFL Tx and Rx cables between the antenna and the IDU See Chapter 4 Cabling and connections Figure 26 Assembled antenna ...

Page 46: ...Chapter 3 Installing the antenna and radio assembly 32 1037749 0001 Revision B ...

Page 47: ...abling requirements For a list of approved coaxial cable types for the IFL between the antenna and the IDU see the Hughes FSB IFL Cable Approved List with lengths for SPACEWAY Domestic Installations FSB 080202_01 The FSB lists the maximum cable length for each approved cable type for all relevant radio types Because it is impossible to predict the requirements specific to each installation site yo...

Page 48: ...mitter in a configuration similar to that shown in Figure 27 2 Leave a 10 foot service loop and secure it to the mast Az El mount assembly or reflector bracket 3 Coil the extra cable leave a drip loop and secure the Tx cable with cable ties Note Do not exceed the minimum bending radius specified by the cable manufacturer Figure 27 Transmit and receive cable configurations Note 1 Do not leave the s...

Page 49: ...ve cables This section explains how to connect the Tx and Rx cables to the radio assembly at the antenna Note Do not exceed the minimum bending radius specified by the cable manufacturer Note 1 Do not leave the service loop on the roof or other mounting surface 2 Do not block access to the adjustment nuts on the Az El mount assembly Note You should protect all outdoor cable connections with dielec...

Page 50: ...ble ties Receive cable Connect the Rx cable to the LNB as follows 1 Ensure that power has been removed from the IDU 2 Connect the Rx cable marked with red electrical tape to the receive connector on the LNB shown in Figure 30 CAUTION Coaxial cables and connectors can corrode if exposed to moisture Use only compression type connectors and weatherproof them with dielectric silicone grease and weathe...

Page 51: ...r to the IDU in accordance with the instructions in the IDU installation guide Ground connections Ground the antenna mast at the Az El mount Figure 31 shows the locations of the ground screw For specific grounding procedures refer to the sources listed in Grounding on page 5 Figure 30 Receive connector Note Although the radio transmitter contains a ground screw a separate ground wire to the radio ...

Page 52: ...nd connections 38 1037749 0001 Revision B This completes the installation You must now point the antenna See the HughesNet Ka Band Antenna Pointing Guide 1037663 0001 for details Figure 31 Ground screw on the Az El mount ...

Page 53: ...you will perform these procedures during the antenna pointing process This chapter discusses the mechanical adjustments used to modify the position of the antenna only It does not discuss the pointing process itself For information on pointing the AN8 074P and all HughesNet Ka Band antennas see the HughesNet Ka Band Antenna Pointing Guide 1037663 0001 This chapter contains the following sections A...

Page 54: ...location of the nuts only one nut is shown 2 Loosen the top elevation adjustment nut and spin it counter clockwise until it rides an inch or two up the elevation rod 3 Use the lower nut to adjust the elevation As shown in Figure 33 the black line on the bar behind the lockdown nut acts as a pointer to indicate the value in the elevation scale For example the antenna shown in the figure is adjusted...

Page 55: ...ntenna azimuth and elevation 1037749 0001 Revision B 41 4 Tighten the two lockdown nuts on either side of the Az El mount using a inch socket and torque wrench to secure the elevation setting in place Figure 33 Elevation marker ...

Page 56: ...e installation reference sheet 3 Tighten the three lockdown nuts just enough so that the antenna does not rotate freely 4 Using a 1 2 inch wrench rotate the azimuth adjustment bolt shown in Figure 34 either clockwise or counter clockwise until you reach the desired azimuth angle Figure 34 Azimuth adjustmen components CAUTION Do not attempt to adjust the azimuth manually by pulling on the antenna r...

Page 57: ...ter 5 Adjusting the antenna azimuth and elevation 1037749 0001 Revision B 43 5 Using a compass verify that the azimuth is correct and tighten the three lockdown nuts fully to secure the antenna in position ...

Page 58: ...Chapter 5 Adjusting the antenna azimuth and elevation 44 1037749 0001 Revision B ...

Page 59: ...nds G GPS Global positioning system H hr Hour hours I IDU Indoor unit IFL Intra facility link L LHCP Left hand circular polarization LNB Low noise block converter M m Meters N NEC National Electrical Code NOCC Network Operations Control Center R RF Radio frequency RHCP Right hand circular polarization Rx Receive T TRIA Transmit receive isolation assembly Tx Transmit ...

Page 60: ... Acronyms and abbreviations 46 1037749 0001 Revision B ...

Page 61: ...ription 11 installing 19 G Grounding ground screw location 37 methods 5 requirements 5 H Hardware parts list 13 I IDU installing 5 IFL 5 33 Installation related tasks 4 summary of steps 2 Installation site determining 4 Installing antenna mount 4 5 12 pole mount installation requirements 4 az el mount 17 18 feed horn 27 29 feed support arm 19 20 IDU 5 radio assembly 21 25 reflector 18 19 reflector...

Page 62: ...ion 10 installing 18 19 Reflector bracket description 10 installing 17 18 S Site survey 2 T Tailpiece installing 20 Tilt plate description 10 installing 17 18 Tilt scale 18 Tool list 14 Torque 16 Transmit cable connecting 36 routing 34 Transmitter radio 11 connecting cables 36 Tri mast 12 ...

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