While traveling on the interstate I came across a leo on the left side of the road with CO Ka. As I approached he pulled in front of me and continued on while I followed, my V1 alerting the whole time. After he was roughly 150 yds. in front of me, the near full strength signal J'ed out. So I reset the V1 and the Ka came back, only to J out again about 30 seconds later. So reset it again and the same thing happened again, and after the third attempt with the same result, I gave up and let the V1 stay silent.