Yesterday driving on the highway to Miami I encountered a Ka "What is Your speed" sign on a construction zone. As far as I know they work with K band, right??. But my X50 reported it from about 3/4 to 1 mile.
Also before that, same day but a couple of hours before (it is a 5 hours drive) I had two Ka alerts from one trooper, which when I got closer from behind the car I got about 200 feet of alert about 4. Then got full alert at about 100 feet and about 300 feet after passing him then went down normally.
Is it ok, I think it is but a Ka speed sign????