I had purchased the DFR7 a few months back and was very impressed with how quiet it was. It does not alert at all to the traffic monitoring systems found along I-90 in Ohio, which made for a pesky ride with my Whistler Pro 78 detectors.
Because the detector was so quiet, I was really wondering just how sensitive it was when a real alert happened to be ahead.
I was heading south bound on Highway 11 today which is between Ashtabula and Youngstown, OH. There really is nothing on this road, so don't travel it if you need to stop for gas or a bite to eat.
Anyhow, I was motoring along when my detector sounded. Because I've been wanting to see what type of range I have with this detector, I immediately looked at my odometer and noted the mileage. The alert had stopped sounding, and I thought that the alert had been just a random blip after traveling a mile without hearing anything more. Then the alert came back again, this time a little stronger....then again it was gone as I traveled another mile. Finally, the alert sounded again, this time much stronger....I looked way ahead of me and finally saw a vehicle in the median. Just as I rolled next to this LEO, he lit up and pursued a black pick-up truck heading North bound. I glanced at my odometer just as I rolled past him and to my great surprise, I saw that my DFR7 had given me a 3+ mile alert!
I always wanted to know how well this detector worked at sniffing out a threat. Now I know.
I've never had such advanced warning before.....I was impressed.
Safe travels all....