The Geist Antenna, aptly named for its receptive qualities, is a construct which emulates a transmission reciever, which detects spiritual and psychic energy in its vicinity. It is an extension of the passive aspects of the psyche, more subconscious than conscious, and tends not to discriminate in which transmissions it recieves. For that reason it is advised not to utilize this construct alone, but to also use a filter mechanism of some kind.