FIRST OF ALL i WASN'T WATCHING ANY NEWS PROGRAMS AS THE SOURCE OF MY ASKING.

The mics are not hard-wired. The officer wears a microphone on his shirt with
a wire that goes down to the tranmitter on his belt. The audible part is
transmitted back to the car.

I ask because the local police stop cars in front of my residence alot
enforcing the 25mph speed limit.

I just wanted to listen. I used to have it but lost the frequency when I
moved.