Groove A-5Hn , RB433AH+R52H and NV2

RouterOS Wireless Networking
1

I have been testing these two devices in NV2 and channels of 20MHz. To my surprise they perform very differently on the same link with the same antennas.

RB433AH+R52H - NV2 20MHz:
UDP:

  • One direction: 27 Mbps
    Both: 13.4/11.5 Mbps

TCP:

  • One direction: 22 Mbps
    Both: 12.4/8.4 Mbps

Groove A-5Hn - Nv2 20MHz:
UDP:

  • One direction: 52 Mbps
    Both: 25.0/23.9 Mbps

TCP:

  • One direction: 46.2 Mbps
    Both: 22.4/24.3 Mbps

The link is simetric.

My question is: Does anyone find an explanation for this performance differences? I iknow both these devices difer on which 802.11 protocol they can use (a/n or a). But, as I understand it, NV2 replaces the MAC layer so this would not be the cause.

Thanks for any feedback.

2

groove is a 150mbps device and R52H is 54mbps device…for dumbs

3

Great, understood that NV2 only replaces MAC algorithm not actually the modulation.

I have another question though. I have also tried r52h (802.11a) in 40MHz turbo mode and, compared to R52Hn (802.11n) in 40MHz channel width, the link has much more throughput (it doubles from the R52Hn).

Does turbo mode do something I am not aware of? I have also tried UBNT SR71-15 with the same results.