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bpwl
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Re: High latency from wireless ping

Wed Feb 03, 2021 1:50 pm

"auto" selection of frequency is usually a bad idea. The AP spends some short time in analyzing the RF spectrum around and then takes the channel with lowest traffic or energy at that moment. Might be a fully wrong selection, that is not corrected later.

Do the analysis yourselves. You have "Freq usage" and "Snooper" , and even spectral scan to look around for a while (10 minutes, half an hour, daytime - evening ....)
Then select the proper channel. On 2.4 GHz use 20 MHz bandwidth only, and only channel 1, 6 or 11. (Eg: 6 will interfere with 4-5-6-7-8)

(On 5 GHz select installation =any, use 40 MHz ( 20 MHz Ce) and select depending on your country/region, and decide if you can do it without DFS channels or weather channels or not.
You might be able to increase the 5 GHz bandwidth later.)

Wireless card "excellent" signal doesn't mean the connection is good. This is the reception from the (strong) AP. The reverse connection can be a problem. Battery operated devices transmit a weak signal. And full interference is still "excellent" signal for your device. Use the MT AP wireless "registration" for your analysis. (TX rate, RX rate, TX/RX signal, Signal to noise, TX/RX CCQ%)

But still 200-600ms is a lot for RTD. Anything special in the config ?

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