A system and method of generating a radio frequency signal adapted for allowing a receiving device to calculate a navigational indicator relative to a plurality of antennas. The system comprising a radio frequency generator unit for generating: a primary signal for driving at least one antenna of the plurality of antennas to provide a primary transmission; and an actively derived secondary signal to complement the primary signal for driving at least one other antenna of the plurality of antennas to provide, collectively with the primary transmission, the combined transmission, wherein the combined transmission, relative to the primary transmission only, provides a reduced observed distortion at the receiving device.