A link shack is a transportable field cabin that contains all the necessary high-tech equipments to operate link units outside the Avatar Compound, often hundreds of kilometers away from Hell's Gate. Each shack is fitted with solar panels, atmosphere filters and reinforced windows, so they are self-sufficient to remain operational for indefinite periods of time. These structures are durable, highly versatile and also lightweight enough to be carried externally by a single Samson. They are often placed on elevated positions as a safety precaution against predators, dangerous plant life, and shifting rivers.
Multiple shacks are dispersed over a wide range of locations on Pandora, most notably at Site 26 in the Hallelujah Mountains. Others have been seen in the Blue Lagoon.
Source[]
- James Cameron's Avatar: The Game - Ingame Pandorapedia on Avatar Link Shack and RDA Shack.