I was searching and couldn't find a thread on this. I am in upstate NY and run my RX65 in Ka USA mode. I feel that it signifigantly improves the range on Ka band. I haven't ran it in tech mode to see the exact frequency they run up here, yet.
I also finally turned X band off. I have never came across X band in all my time driving in NY, CT and Mass. It only causes a ton of annoying false alerts and makes me less alert when there is a real threat. One thing I did notice in NY is that there are X band sources from the traffic lights at intersections. Are these motion sensors so it knows when to change the light? Or a trigger to a red light camera?