Installing a shim for vertical transmit polarization

Follow the instructions in this section only if installation specifications or a service order states that vertical transmit polarization is required.

If vertical transmit polarization is not required, go to Installing the radio assembly on the feed arm on page 25.

The radio assembly is shipped with a horizontal transmit polarization shim installed. If vertical transmit polarization is required, you must remove the horizontal shim and replace it with a vertical transmit polarization shim.

Note: If you need to change from horizontal to vertical transmit polarization on an antenna that has the radio assembly already installed on the feed arm, you will have to remove the radio assembly from the feed arm before you can follow the instructions in this section.

Figure 19 shows where the shim is located and shows three of the four Allen screws that hold the shim in place.

TRIA

Shim (See also Figure 20.)

Allen screws

Waveguide

(4 total)

 

Figure 19: Shim location next to TRIA

To replace the horizontal shim with a vertical shim, follow these steps:

1.Obtain a vertical transmit polarization shim kit (HNS model VTX-SHIM-KIT, P/N 1033809-0001).

Figure 20 on page 22 shows what a vertical shim looks like.

2.Loosen and remove the four Allen screws that hold the shim in place. See Figure 19.

3.Separate the end of the waveguide from the shim.

Chapter 3 • Installing the radio and antenna assemblies 1035567-0001 Revision A

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Hughes AN4-074-DF installation manual Installing a shim for vertical transmit polarization, Shim location next to Tria
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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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