I have a Redline that I bought in 2016, and I've known since then that its really hot. Detectors are illegal here, so LEO's use CO all the time. Anyway, I have had over 16 mile alerts before on 34.7, and a 6 mile alert on K-band from a Raptor RP-1 last year. Last week, I was at a red light in a mostly rural area and I got a slow 34.7 alert. I removed the detector from the windshield and pointed it left, and the alert quickened. I proceeded to turn left and drive towards the radar. Eventually, I meet a LEO parked in the median of the divided highway. Total distance from the corner where it alerted- 6 miles. That was a complete off-axis, 90 degrees. Crazy stuff. Keep in mind that its very flat here and no trees either.