of a fuel dispenser's control system having communication electronics and automatic gain control circuitry designed according to the present invention. [0023]FIGS. 6A and 6B are a flow chart of a first tag arbitration process according to the present invention. [0024]FIG. 7 is a schematic diagram of three fuel dispensers and a tag associated with the arbitration process of FIGS. 6A and 6B. [0025]