I know people say that the current crop of guns do not have a standby mode but I have to differ. On Long Island the Suffolk County LEO most definitely have either a standby mode, or their guns leak a LOT because when I see one with a fish my Valentine (or my RX65 for that matter) acts just like the gun is in standby.
IOW no beeps till getting real close to the LEO and never full alert.
Mostly ka, k and in Suffolk County on 495 at least one X band car out East from 64-70 or so. Don't turn off X band if going out East.
Nassau is all Ka and Laser especially between 46 and 43 where the laser boys hang out in the woods on the Westbound side.