How far apart do detectors need to be to avoid significant interference? I was thinking of putting my spare pro78se detector in the rear window to supplement the 9500ix in the front window. Think of it as a poor mans V1.
Would only need to use it on long trips though. Seems like having an OK quality detector facing rear would still be more sensitive than a good detector facing away and hoping for reflections. Would certainly need to do testing before actually speeding with that setup.