New to radar detectors, but with the new car, I had to have one! got a second hand X50.
In any case, over the last week, I've had two cases of it picking up a K signal and then after a while, I see the LEO and the detector switches to Ka.
Does a Ka signal shift into a K signal over long distances?
Today on the way to work (in bumper to bumper traffic no less), I was getting IO K signals for about 2 miles before finally it switched to IO Ka. Super annoying in slow traffic! (since it would spike to full, I'd mute it, then it would die off, then repeat, over and over for like 15 minutes).