SOURCE: calibrating my cobra radar detector
I dont know of any radar detectors that need to be calibrated. To calibrate the radar, you would need a source of RF energy like a radar gun and a ton of specialized equipment.
Just turn it on, place it up high enough on the windshield or dash so that it has a clear "view" of the road. Suction mounts on windshields get the detector higher and it offers you a better view and an earlier warning as it can "see" over the hill better.
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