Guys, Thanks very much. In the space of a few posts I've realized I'm far out of my league, technically speaking. So . . . Re: Veil Guy's advice, I bought a Passport 9500xi today, but will also take delivery of a new V1 on Monday or Tuesday. So maybe I will use them in tandem after reading VG's account of doing the same -- all in concert with the Lexus installed K 40 which, judging from an evening driving around with both on, is not as responsive as the Passport. (That plus I was stopped twice on Florida's Alligator Alley -- never happened using my old V1) My original intent was to replace the K40 with the custom installed 9500c1, but two failed appointments and a call to Mark at K40 changed everything. I'm glad I found this site. I just hope the darn laser scramblers on the K 40 actually work. The rest of the system was a huge (and expensive) disappointment. Thanks. Randy W.