VHT Function in 2.4GHz
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Is it possible to get the VHT functionality to work when using the Archer T2U Nano in 2.4GHz access point mode, and is there any way to use it at data rates above the 11n standard operating as an access point in the 2.4GHz band?
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I've just tested this with a similar USB Wi-Fi adapter that uses the RTL8811CU chip (while the T2U nano should have a RTL8811AU chip).
When used as Windows Hotspot I got 86 Mbps, which indicates 256-QAM (VHT) is in use. ( https://wlanprofessionals<dot>com/mcs-table-and-how-to-use-it/ )
When used as Linux (Mint) Hotspot I got 72 Mbps, which indicates 64-QAM (HT).
So, to me it seems that the operating system (or perhaps the driver?) is the limiting factor.
Anyway, you have probably also noticed that both OS limit the channel width to 20 MHz for the 2.4 GHz hotspot. This is the main reason why you can't achieve 150+ Mbps.
If you need more speed at any cost, then you might want to consider upgrading to a 2x2 Wi-Fi adapter, which would double the link speed from 72 Mbps to 144 Mbps.
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Hi,
Do you mean you are using the T2U Nano as a "Hotspot"?
What is the operating system? Windows?
If your T2U Nano supports VHT when used as wireless client, then it should also support it when used as Hotspot.
How have you determined that it doesn't use VHT data rates?
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The operating systems used are Windows and Linux, and the data rate is referenced using wireless LAN sniffer.
When two T2U nano's communicated with each other, the maximum data rate was 72 Mbps, while a maximum data rate of 173.3 Mbps was observed when the T2U nano was connected to an access point supporting 256 QAM or higher
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I've just tested this with a similar USB Wi-Fi adapter that uses the RTL8811CU chip (while the T2U nano should have a RTL8811AU chip).
When used as Windows Hotspot I got 86 Mbps, which indicates 256-QAM (VHT) is in use. ( https://wlanprofessionals<dot>com/mcs-table-and-how-to-use-it/ )
When used as Linux (Mint) Hotspot I got 72 Mbps, which indicates 64-QAM (HT).
So, to me it seems that the operating system (or perhaps the driver?) is the limiting factor.
Anyway, you have probably also noticed that both OS limit the channel width to 20 MHz for the 2.4 GHz hotspot. This is the main reason why you can't achieve 150+ Mbps.
If you need more speed at any cost, then you might want to consider upgrading to a 2x2 Wi-Fi adapter, which would double the link speed from 72 Mbps to 144 Mbps.
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Thank you very much.
Your information was very helpful.
I will consider investigating if the driver settings will change the status.
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