a system that incorporates teachings of the subject disclosure may include , for example , a method for scanning wireless signals in a wide frequency band , measuring power levels in narrow frequency bands from the wireless signals , determining a threshold according to an average wideband power level or at least a portion of the power levels in the narrow frequency bands , detecting from the wireless signals a narrow band interferer based on the threshold , and initiating a strategy for responding to interference in the wide frequency band caused by the detected narrow band interferer . other embodiments are disclosed .