A compressive receiver of the type having a dispersive delay line is provided by an additional mixer which is responsive to the compressive receiver's local. oscillator and to an additional RF input. The output of the additional mixer is delayed and applied to the input of the dispersive delay line. The output of the dispersive delay line is divided, one of the divided outputs being delayed. The delayed output and the other dividend output are compared in a comparison circuit. The compressive receiver may be advantageously used as a direction finding or side lode cancelling compressive receiver.