Hughes AN4-074-DF installation manual Checking the azimuth, elevation, and polarization settings

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Checking the azimuth, elevation, and polarization settings

1.Check to see if the elevation reference and polarization settings are still at their previously set values (the values calculated by the installation software). If they are not, see Installing the Az/El cap onto the antenna on page 15 and follow the instructions to align the antenna to the correct values.

2.If you have not already done so, tighten the clamp nuts all the way; then loosen them just enough to move the antenna reflector from side to side to adjust the azimuth.

The clamp bolts should be as snug as possible, while still allowing the antenna reflector to be moved from side to side. See Figure 39.

3.Use a compass to determine the azimuth bearing specified by the installation software as follows:

a.Rotate the antenna reflector in azimuth (sideways) until the reflector is pointed at the magnetic bearing. Use a pencil to mark the location on the mast, and label this mark 1.

b.Mark the location on the Az/El cap above mark 1. This is the azimuth alignment mark. (See Figure 40.)

Elevation reference edge

Marks 1, 2, and 3

Azimuth alignment mark

Figure 40: Locating and lining up the azimuth bearing

c.Make another mark on the mast 3/4-in. to the right of mark 1 and label it 2. Make another mark on the mast

3/4-in. to the left of mark 1 and label it 3.

4.Stand behind the antenna and point the front of the reflector to the left of the estimated bearing to the satellite so the azimuth alignment mark lines up with mark 2.

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Chapter 5 • Pointing the antenna 1035567-0001 Revision A

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Contents Installation Manual for Ku-band Antenna Model AN4-074-DF Copyright 2004, 2005 Hughes Network Systems, LLC Important safety information Types of warnings used in this manualAntenna installation safety Important safety information 1035567-0001 Revision a Important safety information 1035567-0001 Revision a Vii Viii Contents Chapter Cabling and connections Figures Xii Tables Xiv About this document Scope and audience OrganizationRevision record Overview Broadband satellite system componentsShows the .74 m antenna installed on a pole mount Antenna installation overview Install the antenna on the mountTasks related to antenna installation Mount Installation Guide HNSAntenna parts and required tools Antenna kit componentsAz/el cap Feed arm unattached Trimast or other antenna mount Small hardware list Details QuantityTools Tool DetailsInstalling the radio and antenna assemblies Antenna Site Preparation and Mount Installation GuideDetermining the pointing values Assembling the Az/El cap Revolving plateAligning the Az/el cap bolts Installing the Az/El cap onto the antenna Antenna adjustments for elevation and polarizationElevation Locating the elevation reference edge Polarization Placing the Az/El cap on the antenna reflector Installing the fine elevation pointing tool Installing a shim for vertical transmit polarization Shim location next to TriaTria Direction of Tria rotation for vertical polarization Horizontal polarization Installing the radio assembly on the feed arm Securing the O-ringConnecting the feed arm to the antenna reflector Radio assembly installed on the feed armInserting the wedge nut bolt Installing the antenna assembly onto the mast Attaching the optional shroud Feed horn grooveShroud screws Cabling and connections Transmit and receive cable configurations Routing the cables at the ODUConnecting the transmit and receive cables Connecting the receive cable to the LNB Ground connection Ground screw on the transmitterCabling and connections 1035567-0001 Revision a Pointing the antenna Using the installation software Peaking the signal Antenna pointing overviewOPI optional tool OPI Prerequisites for antenna pointing Adjusting the antenna Adjusting azimuth, elevation, and polarizationPointing adjustments on Checking the azimuth, elevation, and polarization settings Receive pointing ImuPointing the antenna 1035567-0001 Revision a Elevation nuts Pointing the antenna 1035567-0001 Revision a Polarization Isolating the transmit signal Pointing the antenna 1035567-0001 Revision a Final steps Removing the fine elevation pointing toolAcronyms and abbreviations Acronyms and abbreviations 1035567-0001 Revision a Index Index 1035567-0001 Revision a

AN4-074-DF specifications

The Hughes AN4-074-DF is an advanced military communication system designed to deliver reliable and secure data transmission in diverse operational environments. Built with cutting-edge technologies, this system plays a critical role in enhancing situational awareness and facilitating effective communication among military personnel.

One of the primary features of the AN4-074-DF is its robust design, which allows it to withstand harsh conditions, including extreme temperatures, humidity, and shock. This durability is essential for military operations, where equipment is often exposed to challenging environments. The system incorporates advanced materials and engineering techniques to ensure longevity and reliability.

The AN4-074-DF utilizes state-of-the-art encryption technologies that provide secure communication channels, making it difficult for adversaries to intercept or decipher sensitive information. This is crucial for military operations where the security of data transmission can significantly influence mission success. The system employs various encryption standards that conform to military specifications, ensuring that it meets stringent security requirements.

Another key characteristic of the AN4-074-DF is its versatility. It is designed to support multiple communication protocols, enabling interoperability among different military platforms and systems. This flexibility allows for seamless integration into existing military networks, enhancing operational effectiveness and coordination among units.

The system also boasts an intuitive user interface, which streamlines operations and minimizes training time for personnel. The user interface is designed for ease of use, allowing operators to focus on their mission rather than struggling with complex technology. This feature is particularly advantageous in high-stress situations where quick decision-making is vital.

In addition to its communication capabilities, the AN4-074-DF is equipped with advanced situational awareness tools. These tools provide real-time data and analytics, helping military leaders make informed decisions based on current battlefield conditions. The ability to access critical information rapidly can be a game-changer in dynamic military operations.

Overall, the Hughes AN4-074-DF stands out as a highly capable communication system that meets the demanding needs of modern military operations. With its durability, security features, versatility, user-friendly interface, and advanced situational awareness capabilities, it plays a pivotal role in enhancing communication and coordination among military forces. This system exemplifies the ongoing evolution of military technologies aimed at improving operational efficiency and effectiveness on the battlefield.
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