I have been running Filter 2 for a while in the city and i recently went back to filter mode with Ka max always on. Ka band and Ka 9 falses are occuring all over the city i counted 19 Ka falses in a hour drive around the city. While playing with the Filter modes is when i notice it is very much more alert to Rd's and towers around the city. I have my good days and bad. I'm pretty sure its going back to Mike B for a check up in the next 2 weeks.