A jig for positioning an implant at an implantation site in a bone. The electrical outlet is receivable in the box, which has a barrier to isolate the power and communications connectors, but is not receivable in a standard box, which would not have the required barrier, due to the spacing and locations of the mounting fasteners and protrusions extending downwardly near the ends of the outlet. If an interruption in the conversation occurs, a message recorded by the agent is stored and the connection is allocated automatically. The leading end of each prismatic vortex generators is inclined away from the direction of flow. The device includes a series transformer unit, a shunt transformer unit, and a reactance unit.