Police radar detector with reduced emissions

A radar detector for detecting signals in a police radar band is disclosed. The detector includes features to reduce emissions such as those typically generated by the detector's local oscillator. Two low noise amplifiers (LNA's) 73,76, operating in X band and a combined K/Ka band, respectively amplify X and K/Ka band signals from separate antennae 34,32 and deliver those signals over separate, elongated and narrow signal paths to X and K/Ka mixers 74,77, where those signals are mixed with local oscillator (LO) signals to produce an intermediate frequency signal for detection. The elongated, narrow signal paths from the antennae to the mixers reduce LO emissions, and those emissions are further reduced by incorporating radar absorbers between the circuit board and detector case along the antenna-mixer path, including radar absorptive paint on the circuit board itself along this path, and sealing the case with a conducting sealing gasket.