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What Are Radar Channels? How Do They Affect Other Channels?
Channels 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, and 144 can be used as radar channels. If the channels supported by some countries or regions overlap with the radar signals, avoid using the radar channels. The DFS function enables an AP working on the 5 GHz band to detect radar signals. Upon detecting radar channels, the AP automatically switches to another channel to prevent radar interference.
For the radar channels supported in different countries and regions, see WLAN Country Codes and Channels Compliance.