Provided are techniques for the adjustment of antenna transmission weighting values in a communications system that utilizes multiple transmit antennas. An end-effector is connected with the robot providing an additional one degree of freedom and a mechanism for grabbing and moving of substrate andor substrate carriers. Location information for a border of a smart area being defined may be determined using a mobile node or determined using the plurality of nodes. , N\u22121, wherein each one of the N mobile communicators has a distinct phone number. The system further includes a plate having a retaining element for preventing backout of screws inserted through the plate.