I moved my X50 from up high to a middle mount for tomorrows testing and I had my Bushnell K band gun with me and for testing I was doing some really quick IO testing.
Well if I hold the Bushnell directly behind the X50 I get a KA band alert. Keep in mind this is a K band gun. If I move it (gun) to the side the KA goes away and it goes back to alerting to K band. When I did this I got it with both IO and CO triggers. It is only when directly behind the X50 if off to the sides all K band.