Ive come across some parked cops, with radar's transmitting Ka continously.
One was with brimfield ohio cops, the other, with Akron ohio cops.
In the first case, I passed a brimfield cop, with his front radar on facing forwards. He was parked with a 'customer' and my rear sensor picked him up for 1 mile before I stopped getting a Ka alert. v1 on little 'l', POP on, Ka guard on
The second case, an akron cop was at the scene of a downed tree limb on the highway. He had his rear radar on, was stopped and pointed in my same direction of travel. I was traveling towards his position. v1 on little 'l', POP off, Ka guard on.
In both cases, I got 1.0 miles of alert. (I get more alert with K and X)
I have no idea what Ka frequencies these municipal departments use. All I can tell you is that the've been Ka in the decade + of my V1 ownership.
If anyone knows what Ka freq these depts use that would be interesting to me.
Oh! and both of the above instances were with me using a v3.872.