SNR/SINR in wifi clients

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New Around Here

i went through SNR in wifi client literature on google and found the following statements

"On-board wireless NICs for laptops, tablets, etc aren’t capable of determining accurate SNR. These wifi NICs are unable to understand unmodulated signals coming from non-802.11 sources. There are other ambient RF sources which an 802.11 NIC cannot see."

i know this article is from 2015.

having said that,

is there any App which accurately determines SNR on Intel wifi clients?

other way around, does client gets to know the SNR measured on the UL channel at Access Point. I know for sure, access point does measure SNR of each client [effective SNR or packet SNR] ?


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