A spring loaded antenna mounting system for the directional antennae of a point-to-multipoint millimeter wave communication system and methods of supporting such antennae for selectively directing the beam thereof. The rubber product can be produced using the mold upon producing it by compression molding, transfer molding or injection molding. The server includes a server controller that outputs the differential data file to be provided to the navigation device. The load breaker can include a shunt trip, and the source breaker can include an associated lockout relay. The final portion of the trench is etched by exposing the silicon to a plasma generated from a combination of a fluorine-containing gas and a polymer-forming gas.