Abstract: A device for suppressing second-time-around echoes from far-out clutter in an MTI pulse radar lies in shunt with a digital signal processor connected to the receiver output of the radar whose transmitter includes a power oscillator maintaining phase coherence only for the duration of an outgoing pulse. In order to minimize the occurrence of blind speeds, the oscillator is triggered for different pulse-repetition frequencies of predetermined values in alternate scanning intervals each lasting for an antenna rotation by half a beamwidth. Echoes from a group of radar pulses emitted in one interval are accumulated and then compared in magnitude with accumulated echoes from another such group emitted in an adjoining interval.