The object of the present teachings is to provide an improved battery-operated towing tractor. In some embodiments, the form factor has the dimensions of one half of a millimeter by one half of a millimeter by fifty millimeters to give the transceiver an elongated shape similar to the shape of a single strand of hair. The size of each assist pattern of the pair of assist patterns is such that the assist pattern is not resolved on the wafer. The digital audio broadcast from multiple receivers does not present to a listener any audible delay or echo effect.