I was wondering how far can a radar gun clock you? Does it depend on how high he is and what band he is using? I ask this question because I only see how far laser can clock you on this forum not radar.
Depends on a lot of things, like the gun power, radar cross section of the vehicle, etc.
For an example, here's the results from a Car & Driver test on different vehicles way back in 1979(!)...
They used a Kustom KR-11, results are in feet.
"Maximum range can be as high as a mile (1.6 km) or more for large targets under good conditions, or as low as a hundred feet (30 m) or less for small targets under bad conditions."
X-Band Radar = from a distance of 1/2 mile or less.
K-Band = range of about 1/4 mile.
Ka Photo Cop and Ka Wide-Band = effective range is 120-300 feet
X band radar = The average range (at 40 mW of power) for this gun is 2500ft. or 0.47 miles. The maximum range at (100 mW) has been measured up to one mile.
K band radar = K band suffers from a signal loss because of running near the limits of the water absorption band centered at about 22.24 GHz and does not have the range like other bands offer.
Ka Band radar = Target detection range is determined on the moisture in the atmosphere, the more moisture the less the range.
This is all the information I could find and most of it seems pretty old.
maybe roy can fill us in on radar range