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CWNP Certified Wireless Network Administrator CWNA-109 · Domain 6: RF validation and remediation

Spectrum analysis: FFT, waterfall and duty cycle views; identifying non-Wi-Fi interferers

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Last reviewed September 25, 2026 · Leer en español

A Wi-Fi adapter can only decode Wi-Fi frames. Energy from a microwave oven, a wireless camera or a jammer shows up to a Wi-Fi radio only as noise or a busy channel, and the adapter cannot tell you what it is. A spectrum analyzer measures raw RF energy across a range of frequencies, whatever its source, so it is the tool for finding non-Wi-Fi interference.

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