Best Wi-Fi Channel Settings (2.4 GHz & 5 GHz): Pick the Least-Crowded Channel Quick answer: 2.4 GHz → use 1, 6, or 11 at 20 MHz. 5 GHz → start on 36–48 or 149–161 at 80 MHz (drop to 40 MHz if cr... Updated on Nov 8, 2025