The FSB-3C is the most complete Spirit Box available, being able to work on up to three simultaneous channels.

There are + and - control buttons for each channel - for the FM and AM channel. You can scan all channels at the same time and independently choose directions for scanning each channel - forward and backward. Scan speeds can be adjusted to many different levels, from slow to very fast.

There are options for the Antenna and also a Mute button for when you want to say something to the entities.