Changing the bandwidth of the 1505 wireless card

Does anyone know how to change the bandwidth of the 1505 wireless card from 20 MHz to 40 MHz? Mine is currently on 20 MHz and has a speed of 130 Mbps, but apparently it supports 40 MHz and that will give me a theoretical speed of 270 Mbps.

Is there any documentation in regard to the advanced property settings? (please see attached)

 

you can change bandwith?
I have the intel pro wireless card, can that one be changed as well?

 

I'm not sure how you can change it. I know both bandwidths are supported on the Dell.

Perhaps it's a setting on the router you have to change?

 

Still, I would like to know if it's possible. perhaps Ill look into it this weekend.

 

What do you intend to do with the change?

 

It is a change on the router! See attached. My channel width was set to 20 MHz on the router.

Now my wireless card is much faster. Using the Dell Wireless WLAN Card Utility I see a theoretical speed of 270 and an actual speed of 170. I was only getting an actual speed of 108 Mbps before...

 

Thanks, I'll try it out next week and report back if I get a boost.

 

I have the same router and wireless card, but when I go into the link status it says 20mhz on the Dlink Tool. I see in the site monitor the possibility of 270 now. Thanks for the tip on changing the setting in the d-link.

However, unfortunately I am only getting about 78.0 Mbps even sitting right beside the router.

Anyone also have this problem with the Dell 1505 and the DIR-655.

I have Firmware Version: 1.11 Hardware Version: A2 on the router and the driver I am using is 20/09/2007 - 4.170.25.12.

Thanks for any suggestions you might have.

 

Do you guys know what a bandwidth is??

Your wireless card is using a bandpass filter to filter out frequencies lower than 20MHz and greater than 40MHz. That RANGE from 20 to 40 MHz is the BANDWIDTH. So it just picks up signals that is in that range. You can't just SET it at a certain frequency.

I had a project as an intern to filter out specific frequencies with an op-amp circuit for ADSL's. So I think I know what I'm talking about. BUT just in case I am wrong, feel free to teach me something as well.

 

Thanks for this explanation. As it was set in the Dell Wireless tool at 20MHz before I made any changes and is still now at 20MHz in the connection details after I set the Automatic 20MHz/40MHz, I am wondering if it is actually using the larger range.

I think this is the ultimate question for me at least. I do not see any evidence in the areas available (that shows the connection nor in the speed) that it is now accessing the faster speed -- wider bandwidth. As this thread's core question was really how to get the faster speed working at least for me I don't think I am there yet.

Incidentally, on the d-link the default was set to 20MHz and not the automatic range.

I appreciate your reply in helping to understand this.

 

I had the same problem: my laptop was connecting at 130Mbps instead of the usual 270Mbps.

My solution: play with the "bandwith capability" parameter on "advanced properties" of your wireless card driver. I solved my setting mine's to 11a/b/g:20/40MHz.

I have a Dell laptop with a Broadcom 1505 Wireless-N wifi card, and an excellent DIR-655 D-LINK AP (supports 1Gbps Ethernet connections).