I got to thinking... how really important is this? So I ran a few calculations...
30 MPH = 44 feet per second traveled
40 MPH = 58.6 feet per second traveled
50 MPH = 73.3 feet per second traveled
60 MPH = 88 feet per second traveled
70 MPH = 102.6 feet per second travel
80 MPH = 117.3 feet per second traveled
90 MPH = 132 feet per second traveled
100 MPH = 146.6 feet per second traveled
So if you have a radar detector that warns you a half a second sooner than another, say at 80 MPH. You were warned 58.5 feet sooner if the detectors both picked up radar at the exact same time.
If a detector had slightly less sensitivity than another, It's response time may make up for that and the alert may sound at the same time as the slightly more sensitive one.
Obviously, at higher speeds, immediancy of response is more important. Speedzones did a test on this and the two Bel units did very well.
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