3x3 cards for masses

RouterOS Wireless Networking
1

Hi everyone :slight_smile:

Tp-link has made AR9380 PCIe x1 card, model: TL-WDN4800
Card looks like that:
http://www.cyberbajt.pl/produkt/4405/4/tplink-tlwdn4800-mimo-3x3.html#szczegoly_produktu
Full specification is here:
http://www.tp-link.com/Resources/document/TL-WDN4800_V1_datasheet.zip

It works fine with Mikrotik 5.x software.
Now i’m testing three cards of this type in one motherboard.

More info in polish with some screens are here:
https://isp4isp.pl/forum/topic_show/7798/

2

I have tried to setup NS-Dual link. And i stuck with proper configuration.

Link works only with 2 chains, 20Mhz channel (MCS15 with 400ns GI). It’s possible to transfer 120Mb TCP fdx (tested with BT). How can I enable three chains and 40Mhz channel? In HT configuration (with NS-Dusal window) I can set only single or both channels, so maybe it’s bug in software?
Little sample from working link is below. Max connection speed is 144Mb :frowning:
NSD_3x3_v2.png