Using 40Mhz (locked) the issue returns that the 4 Harmony HUB´s get disconnected many times an houre because the NWA210AX still switches back to 20mhz because of many WLAN´s in the area. If i use a tool like inSSIDer I can see that even with 40mhz (locked) the NWA210AX is using only 20mhz, 10minutes later 40mhz, and this changes frequently.
Yes you should leave it at 20MHz on 2.4Ghz otherwise you are just reducing the already limited non-overlapping channels within that frequency band. If you set it for 40, it will fall back to 20 during noisy operation. If you're going to use 2.4 already, which is really really bad compared to 5 GHz, then go wild.
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Channel Space–you will need at least 1 20 MHz channel per radio interface. Assuming 40 MHz channel bandwidth, dual 5GHz mode consumes 4 channels. There should be very good channel isolation provided by RRM. If surrounding AP density is high, and channels are scarce then run as 20 MHz channels.
5 GHz Speed Comparison. I also did the same test in 5 GHz. Using 80 MHz channels, the Wi-Fi 5 models maxed out at a typical 867 Mbps data rate, while the U6-Lite, U6-LR, and U6-Pro top out at 1200 Mbps. You can see the impact of Wi-Fi 6 on all three channel widths, but the biggest difference is at 80 MHz.
Some run only 20mhz, some multiplex between 20 and 40mhz, and some operate at 144Mb, 270, and 300mbps. what's the relationship between those 3 speeds and the 2 channels? And also, in my gigabit wifi-n router (Netgear WNR854T), I have two settings in the wireless panel that I'm not sure about.
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difference between 20mhz and 40mhz wifi
