Definitely do a run with the 9500ci in tech mode. The K band frequency of the speed sign may be right on the edge of K band's nominal bandwidth. Or the K band gun may have fluctuating voltage going to it due to corroded connections. This could cause its frequency to drift. Needless to say, the 9500ci won't be able to show any high frequency (in time) drift, but that could cause the 9500ci to ignore the erratic K band frequency signal until the signal is so strong that it essentially saturates the antenna and causes an alert.




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