Abstract: A power divider couples a received signal to a pair of signal channels. The first channel includes a pulse signal processor coupled to the power divider through a band reject filter. The second channel includes a continuous wave signal detector and processor coupled to the power divider through a bandpass filter. The bandpass and band reject filters are responsive to a control signal for tuning the center frequencies of the respective pass band and reject band to a frequency within a predetermined range of frequencies. The continuous wave signal detector and processor determines the frequency of a detected continuous wave signal using the first channel, and tunes, by producing the above-mentioned control signal, the center frequencies of the bandpass and band reject filters to the frequency of the detected continuous wave signal. The band reject filter rejects the continuous wave signal in the first channel.