Hi all,
I have a huge problem with RB922UAGS-5HPacD and R11e-2HPnD on it.
I'm building a dual band a/b/g/n/ac AP to use for indoor project where i will have a lots of users in a zero interference (clear spectrum) environment.

I decided on RB922UAGS-5HPacD with integrated AC radio and to use mini PCI-E card R11e-2HPnD for 2.4GHz…

My problem is that some phones cannot have greater speed than 54mbps on 2.4GHz when connected to R11e-2HPnD.

When connected, in registration table there is Tx Rate and it never goes above 54mbps.
I have set n-only mode and still the same.

It is interesting that Rx Rate in that same table is above 54mbps (72mbps).

I only get around 20-24mbps speed of file transfer - (like its in G mode and not on N).

Phones are capable of having greater connection / download speed (tested on Unifi AP, TP link AP, Fritz AP,...)

But when I use some high end phones like Nexus 5 i get greater connection speed above 54mbps (72/72 rx/tx)

Also with some laptops that have 2x2 mimo speeds are much higher (150/300 mbps)

If i use both mixed devices at the same time the speed drops to 54mbps for both, and remains like that until i stop download on problem phone - then it is full speed for nexus 5...

It is a clean default configuration, Mikrotik ethernet 1 is in the bridge with wlan1 and wlan2.
No filters,nat,mangle,no auth - open network..... just simple forwarding to the network on lan

Tried - nothing helped:

- all frequency channels with combinations of Ce/eC
- 20/40 mhz; 20mhz…
- used only chain 0 rx/tx ; only chain 1 rx/tx ; both chain 0 chain 1 rx/tx ; chain 0 rx chain 1 tx…
- guard interval any / long
- updated to 6.29.1 (was on 6.2x)
- disabled wireless-fp and used only wireless package
- us / no_country_set settings
- distance dynamic / indoors
- tx power all rates fixed 17 / default

this happened with multiple phones from different vendors ( LG L fino, Alcatel Idol 2,... ) - and every phone worked great on other APs.

AC radio works OK.

The R11e-2HPnD is seen as Atheros AR9300 - but I looked up on the net and the chip is AR9580 ???


I need help fast on this one, because if this cannot be resolved I need to find another mPCI-e card that works with mikrotik ( plz post some recommendation for 2x2 mimo indoor mtik compatible card ) and have to return this one to the store in the next 4 days!!!

I found that some other user posted the same problem and there was no response…
http://forum.mikrotik.com/viewtopic.php?t=85303
It has been a year with no response to this problem!!!

I posted in Wireless section also - moderator please remove post that you think is in wrong category.

No reply? wow what a great community...

Who cares?
The same for me but I don't care.
RB951 with 6.30 rc29

Same here.
RB941-2nD. ROS 6.25
FW 3.19
Authenthication WPA2-EAP 802.1X (AES-CCM)

Client - any android phone. Sony Xpera Z for example(Qualcomm 802.11n 1SS WiFi) . Can't go above 54Mbps. Makes transferring files between laptop and phone extremely slow.

Was lightning fast on ancient, 6years old Linksys WRT310n tho.

However, if the client TPlink 150M, throughput can go as fast around 90mbit/s (40MHZ 1SS)

Same here...

Has this ever been resolved?
We see the same problem with RB951G routers.

Not resolved It is known bug. See another topics...

solved on 6.40.8 (bugfix old bridges) and 6.42.1 (current new bridges)