I bought the Escort Passport 9500ix two weeks ago from Amazon (not 3rd party) new and have noticed some weird things with it....
1) When I drove by the grocery store even with GPS OFF, the 9500ix did not alert to K band.
2) When I drove by CHP that I KNEW was running C/O radar, it did not alert to Ka band.
3) When I turn on the 9500ix, it makes this weird, tiny crackling noise.
4) I used my Bushnell and it's supposed to go full alert on K-band but it makes small beeps or none at all.
5) The final evidence I had that led me to believe it was defective was when I tested it with my Bushnell. It detected the radar band as Ka 33.68 AND K 24.144.