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Why is there a difference in signal levels reported by the Summary and Scan screens?

April 26, 2017difference levels reported scan screens signal summary

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Why is there a difference in signal levels reported by the Summary and Scan screens?

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There may be as much as 6 dB difference between the signal levels displayed in the System Summary and Wireless Scan screens. This is normal and is due to slightly different algorithms used to obtain these readings. The levels reported in the System Summary screen are more accurate. These levels may change slightly after a screen refresh. This is also normal and is due to signal fluctuations due to wind motion and reflections. Obtain an average level by refreshing the Summary screen several times.