While playing around with many detectors it became obvious to me a while back that a little bit of stray rd signals isn't all that bad a thing actually.
Many detectors suffer from the "sleeping beauty syndrome" and these stray rd emissions act a lot like a flu booster shot does for the body which gives the body just enough flu virus so that the bodies defenses recognize the real thing the next time they see it for real.
These stray emissions can work the same way for rd's surprisingly IMO
They allow the detector to focus it's scanning a bit better in certain areas of the radar spectrum and respond a whole lot quicker to the next real radar encounter
so don't be so down on rd's that 'leak'
embrace them in fact.
buy a cheap one that leaks in the bands you most often encounter to run alongside your good detector and occasionally turn it on and off to wake up your "sleeping beauty"
Just a thought