everytime that it is turned on
five years
You can get radar detectors from Bestbuy.com and from Amazon.com. You should make certain that these devices are legal in the state you reside. In many places like Virginia they are illegal.
airplane..bwahahahaha....
sonar devices map the sea floor, radar just boils water unless the signal is balanced ungodly.
Ground control, on initial contact.
No, not on the scene. But if you go to court the officer will have to present certification as to their training to operate it, and the fact that was"calibrated."
The radar works just fine, but the operator (the traffic officer) may not be able to see an approaching vehicle as well or as far away in fog conditions. The proper way to use traffic radar is to observe a speeding vehicle, visually estimate its speed, and then confirm the speed with the traffic radar. In dense fog, the traffic radar may indicate speeding vehicles the officer cannot see.
None, they are legal!
Air Traffic Control Use Radar Radio Detection and Ranging to track aircraft! Air Traffic Control Use Radar Radio Detection and Ranging to track aircraft!
The smallest object most radar can pickup is a bird. Radar used by air traffic control and civilians is less accurate than that of the military.
radar
Five free weather apps for iOS devices are: The Weather Channel Interactive App, My Radar Weather Radar, Accuweather, Weatherbug, and Weather Underground.