A self-adapting method and apparatus for determining an efficient cache line replacement algorithm for selecting which objects are to be evicted from the cache. The true data signal are channel hopped with the plurality of decoy data signals to form a multi-channel \u201cscrambled\u201d output signal that is thereafter transmitted in an open-air communication system. Further, a microcomputer 15 reads the adjustment data and controls the adjustment of the HDTV 11 based on contents of the data. Each of these attributes of the joint structure can be tailored to some degree by the choices of materials for the mesh and the solder material.