TL-WN951N only running at 150mbps

Little Man · 25th June 2012, 8:44 PM

Hey all,

I have this wireless adaptor.

Up until a few days ago it ran at 300Mbps almost all the time, be it 4/5 bars or full bars of reception.

Now it doesn't matter what the reception is at, it sits at 150Mbps!

Another adaptor (TP-Link but USB model) in the next room (slightly further away from router; additional wall) gets worse reception but the full 300Mbps speeds.

Another Adaptor (Billion USB 3011N adaptor) which is 4-5m from the above PC gets full reception but only 58-72Mbps speed.

Router: Billion 7800N
Adaptor: TP-Link TL-WN951N / Billion 3011N
O/S: Windows 7 Ultimate x64

Thanks

ShaneHm2 · 25th June 2012, 8:48 PM

I think it might be your actual router by the looks of you showing the other network dongle running slower.
Try seeing if you can test it on a different router that supports 300mbps

Little Man · 25th June 2012, 9:42 PM

Quote:

Originally Posted by ShaneHm2

I think it might be your actual router by the looks of you showing the other network dongle running slower.
Try seeing if you can test it on a different router that supports 300mbps

Unfortunately i don't have another N router, but there is a PC getting 300Mbps so surely it must be the adaptors themselves?

ShaneHm2 · 26th June 2012, 10:24 AM

Quote:

Originally Posted by Little Man

Unfortunately i don't have another N router, but there is a PC getting 300Mbps so surely it must be the adaptors themselves?

Probably have you tried those usb adaptors on that other pc then ?

Little Man · 27th June 2012, 3:47 PM

Quote:

Originally Posted by ShaneHm2

Probably have you tried those usb adaptors on that other pc then ?

Just Tested the Billion 3011N USB adaptor that was in my HTPC that was only getting 72mbps...Still getting 72mbps from my home computer.

Getting the same download/upload speed (speedtest.net) from all the devices though.

GooSE · 27th June 2012, 5:39 PM

Maybe a neighbour just got a new router and it's on the same channel as yours. Try a few different WiFi channels on the router and see if you can get it to improve.

Little Man · 30th June 2012, 8:57 PM

Thanks for the input guys, i found out the problem.

On my 7800N, there is an setting, Channel width that can be 20MHz or 20/40MHz.

It was set to 20/40Mhz but just randomly thought i'd try set it to 20Mhz, reboot the router then set it back to 20/40Mhz again and that fixed the problem.

Click to view full size!

Little Man · 3rd July 2012, 11:55 AM

Hmm every few days it drops back to 150Mbps then i re-apply the 20/40MHz setting and it goes away, but its happened a couple times today already/

power · 3rd July 2012, 11:56 AM

it's normal for wireless to fluctuate in speed based on signal strength.

25th June 2012, 8:44 PM	#1
Little Man Member Join Date: Sep 2008 Location: 3147 Posts: 4,489	TL-WN951N only running at 150mbps Hey all, I have this wireless adaptor. Up until a few days ago it ran at 300Mbps almost all the time, be it 4/5 bars or full bars of reception. Now it doesn't matter what the reception is at, it sits at 150Mbps! Another adaptor (TP-Link but USB model) in the next room (slightly further away from router; additional wall) gets worse reception but the full 300Mbps speeds. Another Adaptor (Billion USB 3011N adaptor) which is 4-5m from the above PC gets full reception but only 58-72Mbps speed. Router: Billion 7800N Adaptor: TP-Link TL-WN951N / Billion 3011N O/S: Windows 7 Ultimate x64 Thanks __________________ Project: Lian Li PC-A05N [Water Cooled] Over $15,500 of Trades!

30th June 2012, 8:57 PM	#7
Little Man Member Join Date: Sep 2008 Location: 3147 Posts: 4,489	Thanks for the input guys, i found out the problem. On my 7800N, there is an setting, Channel width that can be 20MHz or 20/40MHz. It was set to 20/40Mhz but just randomly thought i'd try set it to 20Mhz, reboot the router then set it back to 20/40Mhz again and that fixed the problem. Click to view full size! __________________ Project: Lian Li PC-A05N [Water Cooled] Over $15,500 of Trades!

3rd July 2012, 11:55 AM	#8
Little Man Member Join Date: Sep 2008 Location: 3147 Posts: 4,489	Hmm every few days it drops back to 150Mbps then i re-apply the 20/40MHz setting and it goes away, but its happened a couple times today already/ __________________ Project: Lian Li PC-A05N [Water Cooled] Over $15,500 of Trades!

3rd July 2012, 11:56 AM	#9
power Member Join Date: Apr 2002 Location: brisbane Posts: 27,158	it's normal for wireless to fluctuate in speed based on signal strength. __________________ this is who we are.

27th June 2012, 5:39 PM	#6
GooSE Member Join Date: Jun 2001 Location: Sydney Posts: 6,422	Maybe a neighbour just got a new router and it's on the same channel as yours. Try a few different WiFi channels on the router and see if you can get it to improve.