VSAT
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  1. Intellian v100GX VSAT Marine Antenna System
    Intellian GX100PM Military-Grade Inmarsat Global Xpress Terminal
    Regular Price: C$128,824.41 Sale Price: C$96,316.59
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Maritime VSAT
A maritime VSAT has features that allow it to be operated on a ship at sea. A ship that is underway is in continuous motion in all axes. The antenna part of a marine VSAT system must be stabilized with respect to the horizon and true north as the ship moves beneath it. Motors and sensors are used to keep the antenna pointed accurately at the satellite. This enables it to transmit to and receive from the satellite whilst minimising losses and interference with adjacent satellites. New technology is emerging which allows a solid state device (flat panel) to electronically steer the antenna without moving parts, this new technology is in its infancy but will be a major game changer for the industry.

Technology
Initially, stabilized satellite antennas were used on ships for reception of television signals. One of the first companies to manufacture stabilized VSAT antennas was SeaTel of Concord, California, which launched its first stabilized antenna in 1978. SeaTel dominates the supply of two-way VSAT stabilised antenna systems to the marine industry with almost 72% of the market in 2007 compared to Orbit's 17.6%. Initially, maritime VSAT was using single channel per carrier technology, which suited large-volume users like oil drilling rigs and oil platforms and large fleets of ships from one shipowner sailing within one or few satellite footprints. This changed when the company iDirect launched its IP-based time-division multiple access technology that dynamically allocated bandwidth to each ship for shared bandwidth, lowering the entry-level cost for getting maritime VSAT installed, which turned out to be of key importance to small to mid-sized fleets, and thus to the market acceptance of VSAT.

Source: Wikipedia

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