The present invention is directed to an apparatus and method for stabilizing cargo within a transport container. A request frame including a first preamble, second preamble, and channel information feedback request is transmitted to the receiver, wherein the first preamble is transmitted from one of the antennas of the transmitter, the second preamble is transmitted from each of the antennas, and the channel information feedback request is transmitted from the one of the antennas. In addition to or instead of the variable longitudinal spacing, one cutting blade is movable transversely relative to the other to enable variation in the transverse spacing between the cutting blades. A controlled variable is determined for a second controller by determining the scanned differential voltage of the output voltage and the input voltage in vertexes of the output voltage, the second controller controlling the amplification of the first band-pass filter such that the differential voltage in the vertexes disappears. The process is industrially suitable process for preparing a hard butter, which have excellent properties as a cacao butter equivalent.