I am an USAF Vet from the 70's era.
I was stationed at Holloman Afb in New Mexico.
Ever since my stent in the military I have been able to hear police radar guns.
It never proved to be of any other benefit to me than to give me a heads up of an impending ticket.
The sound is so high pitch I can hardly describe it.
I can some what tell if I am getting closer by increasing or decreasing volume of the sound.
The sound of the new guns sound the same but are very quiet and a short simple burst.
I have seen more of these lately used by local police.
Well with that said I driving with my nephew this weekend.
I heard a normal old school radar gun that I assumed that I was driving up on.
As I drove on and the sound was getting louder.
I told him about the sound and that I have been able to use it to check my speed before getting a ticket.
He looked at me like - Ya right!?
I told him to look for a police are at the side near the side of the road.
And that it was getting louder so I was sure we were getting close.
Then for the first time ever.
Not the pulsed or constant sequel of the Radar gun.
This was a constant pressure that I can only describe as a huge pressure of over whelming silence.
It was overwhelming. I began to pass out. I began to blurt out take the wheel as I felt myself beginning to go.
But then it quit.
As I quickly recovered I saw the source.
There was a very large "Suburban" like Michigan state police vehicle behind the van that was directly behind me;.
The normal radar sequel restarted.
The bubble of the police light was above the van.
My nephew saw the state police car also. So it kind of affirmed my assertion to him.
The van turned and the police suburban continued to follow me.
The incident bothers me.
I dam near passed out.
PS: I had some thing that was close but not even close to the high of the volume of this device the police were using. It was mounted inside a
turboprop lifting body aircraft built in Brazil. The pilot said it was a noise canceling device to keep down the engine noise in the passenger
compartment. It was uncomfortable when turned on.