Hi Ray. Yes when the dish is tilted over , the winch cable clears the edge of the dish such that a truck can deliver a receiver for instalation ,usually one out then the new one in. The receiver is hoisted right up to the top of the crane on top of the hut , the dish is then placed to a horizontal position, then the receiver is lowered into the hut through the roof hatch . After that there are many hours of work building up the receiver and fitting and testing the support systems , it is high end technology for sure. There is space for two receivers in the hut each looks at different frequency ranges , the chosen unit may be slid/positioned over the aperture for the job in hand. In one image one may observe coiled umbilicals on a tray , that is to allow for horizontal displacement of the receiver when being used or parked. Fantastic engineering the whole thing.