An antenna core includes a laminate of a plurality of Co-based amorphous magnetic alloy thin strips in which a length ratio of a long axis to a short axis is greater than 1. The component includes a substrate comprising an outer surface and an inner surface. Their respective outputs are defined as Y, YI and YR, respectively. When the available methods fail completely, costly removal and replacement of the tubing must be performed in order to resume oil production. A method for stabilizing connection between an xDSL modem and a CO is also provided.