I talked to bel this morning to a tech named steve about one of the many problems i have had with the rx65. he told me there is nothing they can do to the bel ramp up problem the rx 65 has at this time, but they need more input from people who have this model. bel knows that this is a problem and it will take a firmware version to fix it. I have 6.1 ( m4) there are no adjustments to fix it it is all done by firmware. If you dont like how the bel responds to radar please call bel and let them know. my rx65 will not go full scale until i am 3 tenths from the radar source pointing at it on the k and ka band radar.