WiFi Signal 3.3.1
WiFi Signal (App Store, via Bradley Chambers):
WiFi Signal is a system menu bar application that provides easy access to your Wi-Fi connection details, monitors the signal quality of your wireless network, and can find and recommend alternative channels for your network thus avoiding signal overlapping and channel conflicts that can result in connectivity issues and performance degradation.
It shows that my 5 GHz network has poor signal quality, with 3/5 bars vs. 5/5 in Apple’s menu bar icon. However, it has a better data rate than the regular network, which has good signal quality. It could not find a better channel to recommend.
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I tested various 5 Ghz channels the old fashioned way. Transfer a very large file and time it; repeat on various channels. One channel notably outperformed. Repeated the test a month later, and same results replicated.
Less elegant and more time consuming, but my guess is that this kind of test has the highest reliability of any methodology.
