The present invention relates to the fields of link adaption, multi-path communication, non-line of sight wireless communication. Multiple conductive contacts are attached to the socket, where each contact includes a first member that extends into one of the cavities, and a second member that provides at least part of a conductive path between the first member and the socket. The photovoltaic module may be stackable with similar modules. Thus, the treated oil and the oil prior to the treatment thereof, have distillation curves or boiling point curves which are the same as or approximate to each other. The OPN primitive is used to establish the connection before any data is transferred thereby eliminating the need for buffer memory in the switch control circuits. The blocks are shaped to be stacked in vertically independent columns and are held in place by the specially shaped, lightweight support beams placed between the adjacent columns.