An x-ray optical system includes an x-ray source which emits x-rays, a first optical element which conditions the x-rays to form two beams and at least a second optical element which further conditions at least one of the two beams from the first optical element. The game rooms may be for durations such as 5 minutes, 10 minutes, half an hour, and hour, a week or a month. The packets may advertise a pending network event that is to occur at a time indicated by the contents of the packets. The isolated portions of the corresponding ones of the received plurality of input RF signals are extracted and utilized to generate the output signals.