P-GB11 is a virtual version of the famous P-SB11, the Spirit Box that paranormal investigators use the most. There is + and - control buttons for each channel - for both the FM and AM channel. One can scan both channels at the same time and choose directions independently for the scanning of each channel - forward and backward. Scanning speeds can be adjusted to several different levels from slow all the way up to very fast. The volume can be controlled independently for each of the two channe