MotoSAT introduced the motorized selfpointing auto-acquiring antenna for Ku-band satellite, The MESA TM with Global Network Management System (GNMS) is moving fixed VSAT communications into a new era of network services. The MESA is a motorized selfpointing auto-acquiring antenna that can be mounted on either a permanent or portable fixed base.

Building upon MotoSAT’s proven mobile satellite technology, the MESA uses tri-axis antenna alignment to provide automatic satellite peaking and acquisition for fixed base applications. It is designed to provide single button satellite acquisition and automatic reacquisition in the harshest of environments.Most businesses rely upon terrestrial connections for voice and data communications.

When these traditional means go down, whether for short-durations or long-term outages, your enterprise could be without critical services for hours or days.MotoSAT’s satellite to LAN failover systems can provide your enterprise with the assurance that critical services will be uninterrupted when an outage occurs. When the MESA antenna is combined with our EtherSAT™ on-demand service, fixed base enterprises are confident that they have the backup and redundancy needed to keep their critical services supported.

With over 25 years of experience, MotoSAT is a leading provider of innovative mobile and fixed satellite antenna solutions. MotoSAT has an install base of over 25,000 and a strong network of 250 dealers. MotoSAT's automated satellite antenna solutions are offered in the consumer, military, rural communications, emergency response, oil & gas, medical, media broadcasting, and enterprise network backup markets. For more information on MotoSAT's fixed and mobile antennas or broadband services, visit www.motosat.com

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This section is very important. It presents and describes some things you should understand, in order to become skilled at properly pointing your HughesNet satellite dish. The following are discussed, as well as the methods used for measuring the relevant values, and why this is important:
- Co-pol - The desirable transmitted signal
- Cross-pol - The interfering transmitted signal
- Signal quality - The received signal

Pointing the Antenna Properly
TV satellites transmitting their signal to the earth have a large footprint. As long as you are in that footprint, it is a relatively easy task to aim towards the satellite and acquire the signal. Transmitting a signal back is a much more precise task.

Satellites in geostationary orbit, like the HughesNet satellites, are spaced approximately 45-50 miles apart. If you draw a straight line between your dish and the satellite, it will be about 22,300 miles long. If you move your dish even one degree off peak, the other end of your line will have wandered off target, by approximately 389 miles.

There is also the very real possibility that if your antenna is not pointed or aligned correctly, you could be firing a high frequency transmission to an adjacent satellite and potentially disrupting service to thousands of its users. This is referred to as Adjacent Satellite Interference (ASI).

This is a very serious issue to satellite operators and is why it is so critical that your dish is correctly pointed, locked down tight, and stabilized properly.

A properly pointed antenna has the strongest possible received and transmitted signals (signal quality and co-pol, respectively). And, it creates the least possible interference for other users on the satellite (cross-pol).

Note: The most important thing to remember is that a properly pointed antenna doesn't waste bandwidth or interfere with your own or others' transmissions. This means a better online experience for everyone. And, most important in properly pointing the antenna is minimizing the cross-pol or interfering signal

From: Satellite Mobility Support Network (SMSN) HughesNet User Guide

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The graphic shows how the remote terminal or VSAT fits into the HughesNet system architecture. Let's start by clearly defining what is meant by VSAT:

VSAT -- Per Webopedia.com (http://www.webopedia.com/): VSAT is Short for Very Small Aperture Terminal. A VSAT is an earthbound station used in satellite communications for data, voice and video signals, excluding broadcast television. A VSAT consists of two major parts, as follows:

A transceiver - This is placed outdoors in direct line of sight to the satellite. It is part of the Feed Arm attached to the dish.

A device that is placed indoors, to interface the transceiver with the end user's device. This is your HughesNet satellite modem.

The transceiver receives and sends signals, to a satellite transponder in the sky. The satellite transponder receives and sends signals, to a ground station computer located at the HughesNet NOC (Network Operations Center).

Each end user is interconnected with another computer at the NOC, via the satellite, forming a star topology. It is also called the Hub and Spokes topology. The computer at the NOC (the Hub ) controls the entire operation, for its portion of the network. For one end user to communicate with another, the transmission has to first go to the Hub, which then retransmits it (via the satellite) to the other end user's VSAT.

Pointing the Antenna :

The antenna uses a three axis pointing system, which you will adjust, after you move:

Azimuth - This is the magnetic compass direction (angle of sighting) at which you point the dish. It is a side-to-side adjustment.

Elevation. - This is the angle above the horizon, at which you point the dish. This is an up-and-down adjustment.

Polarization - The polarization or skew is set after each move. This is a rotational adjustment


HughesNet System Components

The figure above illustrates the four major components of a HughesNet VSAT system:

The Outdoor Unit (ODU) - This comprises the antenna and the feed arm, which has the receiver and transmitter.

The Indoor Unit (IDU) - This is the HughesNet Model DW6000, DW7000, or HN7000S satellite modem.

The Interfacility Link (IFL) Cables - The cables connect the IDU to the ODU.

The Software - This is contained in the firmware of the satellite modem

Satellite Mobility Support Network (SMSN) HughesNet User Guide

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