1. An electronically-implemented method of analyzing a signal in a blocker detector to locate at least one comparatively significant interfering frequency component therein, the blocker detector configured to receive the signal from an analog-to-digital converter of a radio receiver, the method comprising: analyzing, using electronic hardware of the blocker detector, a test range of frequencies of the signal received from the analog-to-digital converter of the radio receiver to identify a subrange of the test range that includes a potentially significant interfering component within the test range, wherein the subrange is smaller than the test range; and iteratively performing the analyzing on the subrange identified in the previous analyzing until a condition for finishing the analysis has been met, wherein the blocker detector is configured to determine whether the condition has been met; wherein the iteratively performing the analyzing comprises using a Fast Fourier Transform engine to divide the subrange identified in the previous analyzing using the Fast Fourier Transform engine into bins and to identify the subrange based on a bin of the bins having the greatest magnitude.