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5GHz Wi-Fi Channel Optimizer
Visualize vertical RF spectrums, mark interference sources on blacklists, and compute optimal 160MHz/80MHz channel combinations.
Operating Mode
Physical Channel Spectrum
Scroll Down ↓Current Binding Status
36 ~ 48
Total Bandwidth: 80 MHz (4 sub-channels included)
Interference Check Results
Clean Band (Zero Interference)
Selected channels clear all known interference, maximizing network throughput.
Weather Radar (DFS) Avoidance Mechanism
Normal OperationSmart Clean Channel Recommendation
Based on your requested 80MHz bandwidth and avoiding 🚫 blacklisted interference sources, the system recommends these available channel blocks:
Networking Guide: 5GHz Wi-Fi Channels & DFS Avoidance
Why does Wi-Fi disconnect when radar strikes?In many regions, parts of the 5GHz spectrum (UNII-2A & UNII-2C, CH 52–144) are shared with meteorological and military radar. Regulations require routers to shut down affected channels within 10 seconds of detecting radar signals (DFS avoidance) and block them for 30 minutes. This causes random dropouts during gaming or video streams.
Why do routers panic-flee to CH 36/40?CH 36–48 (UNII-1) serves as a safe haven entirely free of radar-detection requirements. Switching to another DFS channel forces routers into a silent scan lasting 1 to 10 minutes (CAC evaluation) before transmitting data, creating long downtime. Jumping to CH 36/40 offers zero-wait seamless handoffs and maximum device compatibility.
The Flaw of 160MHz Bandwidth: Lack of OptionsEnabling ultra-wide 160MHz channels requires bonding 8 contiguous 20MHz sub-channels. In the 5GHz spectrum (excluding UNII-3), there are only two 160MHz blocks available: CH 36–64 (partially inside DFS territory) and CH 100–128 (entirely inside DFS territory). Using 160MHz means dealing with DFS detection mechanisms.