The SAT 103A control unit allows the monitoring of the correct functioning of the antenna and the optimization of several parameters when the reception is in areas that are at the edge of the satellite coverage. The SAT 103A control unit allows you to switch between 9 satellites with one touch of the remote control both while cruising or at bay, allowing the reception of nearly 2000 analogic and digital channels (available channels in 1999).In this unit all the buttons necessary for controlling the unit without the remote control are present, two knobs for the initial settings, one instrument indicates the signal received, and a display that indicates the satellite tracked.