I know the true-lock has been on here extensivley. I am writing about the gps mark location feature. I marked a location of a known spd trap. Yesterday I went by the trap (no LEO's) and while the unit was telling I was approaching the location, it goes to full KA alert (he was in oncoming traffic 4 lanes over). Does anybody know if using this feature reduces or get's in the way of the RDD scanning for radar. Then this morning I was traveling a road that comes to with in sight of the highway where the marked location is and goes into speedtrap warning. This concerns me because a half mile down the road is a LEO substation and a quick 55-30 zone. Again does this intefear with the radar detector's main job of finding radar????