In an exemplary embodiment, a communication system is configured to engage in a plurality of ranging processes, and a pool of ranging codes is available to client devices for requesting the ranging processes. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The active and isolation regions are formed in parallel and in the column direction. A kick roller then discharges from the stacker a bottommost stacked card.