AFAIK
"802.11n Greenfield" mode has been abandonned by most vendors, because it harms if B or G transmissions are in the same area.
So now in most cases the G compatibility mode is turned on.
FYI:
https://www.computerweekly.com/news/224 ... field-mode
To know what you have, I use to read what is in the beacon.
How to capture a beacon? Either by softwre on a laptop, like inSIDDer, which will collect one sample for every SSID around for you.
Or just use your Mikrotik, like the mAP, with the
wifi Sniffer (not that other sniffer in tools). Download file, rename to *.pcap and open the capture with Wireshark for reading and showing the information with a lot of detail.
HT is mode "n"
VHT is mode "ac"
Supported rates 6 till 54 is mode "g"
Just an exemple (classic driver) of wireshark
Klembord-2.jpg
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