AD-708 is designed to work with an MPB-30 gain-controllable antenna booster to detect the signal loss to control and compensate for the signal loss of antenna cables precisely and automatically in order to avoid the intermodulation caused by the higher gain supply from the booster. The users don’t have to worry about the calculations of signal loss of antennas and cables or booster specifications. It has a bright LED indicator to identify antenna cable signal loss as well as the booster compensation status. It is an ideal device for the multi-channel receiver installation in EIA standard cabinets.