ASUS RT-N56U Router and Intel Centrino Advanced-N 6200 AGN Card

Hi Guys,

I replaced my Vaio's Wireless Card (Atheros AR9287 2x2 single band) for an Intel Centrino Advanced-N 6200 (2x2 dual band). Now I can't connect at 300mbps to my router (Asus RT-N56U 2x2 dual band) not in 2,4ghz nor 5ghz. It actually connects at 300mbps but after 1 or 2 seconds it drops to 150mbps and stay there.

All configuration of the network card and the router are correct. N Only, 40mhz, WAP2-Personal, AES, WMM Enabled etc... (tried to change preamble from long to short, enable and disable WMM, and always got the same results: 150mbps at most).

Any ideias to solve that?

Thanks!

 

Intel cards used to have a setting for 40MHz in advanced tab of a device manager (I don't know if it's still there and I don't have an Intel card to check it right now).

 

Yes there is. And I's already set to channel bounding. Here goes the Card and the Routers setup:




Continue...

 

Continue...

 

But still getting:



End :/

 

I think your mistake is assuming that your connection always stays at 150. That is your link rate, when idle. I'll bet, if you monitor this connection speed under actual traffic, you will see that it goes up, as both channels kick in. In my Intel 1000 card, my idle speed is always 74, but when I transmit/receive data, it kicks up to 144.

See this article from Small Net Builder for more info:

5 Ways To Fix Slow 802.11n Speed - SmallNetBuilder

 

You have to be sure that the channel you've chosen is not overlapping with a channel another router in the vicinity is transmitting on.
According to Wi-Fi alliance specs if that happens router falls back to 20MHz channel regardless of your preferred settings.

Use inSSIDer and change your channel accordingly. It may be very hard on 2.4GHz but it should be relatively easy on 5GHz band.

 

Or, use inSSIDer to see if it is broadcasting in dual channel mode, using link speed to judge is not always correct.

 

How Can I Get 300 Mbps Speed on My 802.11n Network?

"Without Channel Bonding, about 50% of this bandwidth is lost.
Channel bonding substantially increases the risk of interfering with nearby Wi-Fi networks due to the increased spectrum and power it consumes."

Having same difficulties with my ASUS RT-N66U Router and Intel Centrino Advanced-N 6235.
R.Esteves' getting better speed than I can obtain.

Not sure if I have it set up correctly.
I rarely can get on the 5GHz band and when I do it doesn't last long because of a weak signal.
I'm usually using the 2.4 GHz channel.

 

I have the same problem with my ASUS RT-N16 router. However, 1 of my 3 computer can manage to get around 300 mbps, but my new laptop can only get 150 mbps. I have no idea why, - I have checked and the card runs at 40 MHz. I checked "inSSID'er". What does it mean when it says that your router runs on two channels? In the router settings (with Tomato-firmware) I have set it to channel one, but the program reports that my router runs on two channels (1 +5).

 

It needs to combine two channels to create one 40MHz wide so it uses channels 1 and 5 in your case.

 

Would it be advised to splurge for a dual band repeater?

 

How far are your from the router and what's the signal strength according to inSSIDer?

 

35 or so feet from AP. RSSI reading 60 with 216 max rate for 2.4.
5 GHz band at 90 with max rate of 150. Both channels are set to auto on router.
Noticed 5 GHz briefly running two channels 149 & 153.

 

Try using 20MHz channel on 2.4GHz. With low signal quality 20MHz actually gives better throughput than 40MHz.

 

Do I also then set the card's channel width for 20 MHz only for both 2.4 & 5 GHz bands?
Also which wireless mode should it be set on? There are 6 settings.

Thanks

 

It would be best to set channel to 20MHz on the router although that would affect other devices as well.
What wireless modes do you mean?

 

Using R.Esteves' example:



I've also noticed that inSSIDer doesn't show all of the APs in the area as Tomato's wireless survey does.
The 2.4GHz band is filled with them, however seems that I have the only 5 GHz router in the neighbourhood.
The band signal though is so weak that I frequently get disconnected from it.
Windows signal strength reports poor with only one bar.

 

Usually, there is no need to change anything on the wifi card driver. There are no option to alter performance except power save iirc.

5ghz's range is normally shorter than 2.4ghz.

 

Yeah that's what I thought. I guess I should get a wi-fi repeater to increase the signal.
Anyone have suggestions for a reliable dual band one?

 

You don't really buy repeaters- you buy a router and set it up as a repeater.

 

So it would then be advised to purchase another router and set it up as a wireless bridge rather than getting a repeater?

 

A router can be set to perform as a repeater. It doesn't have to be a bridge (although it can do that too).

 

Hello,

I'm sure that the channels are not overlapping cause I have the only 5Ghz router on the neighborhood. inSSIDer only shows my network.

 

Hello,

I'm sure that the channels are not overlapping cause I have the only 5Ghz router on the neighborhood. inSSIDer only shows my network.

Dragnoak,

The speed never goes above 150mbps, even when downloading big files or transferring in local network.
I use the intel software to analise packets and troughput and it never goes above 150 mbps :/

Yes, inSSIDer shows my routers 5ghz radio using 36 + 40 channels.