Question on Dual-band 802.11n capability...

I have an AR-790U laptop with an Intel 4965AGN wireless adapter. According to the wireless device manager provided by Sony, it is not recommended to enable 2.4GHz and 5GHz simultaneously.

I was curious to know if this restriction is present in other Sony laptops? Or if it has been lifted/deprecated?

And for those in the know, is this a limitation of the Intel device or the way Sony implemented some other part of the wireless functionality? (e.g. antennas)...

 

As far as I know, it's fine to ignore Sony's recommendation on that one... If the card has three antenna ports and was ordered OEM with that card, the antennas SHOULD be there.. All three. The 4965AGN is completely capable of Dual-Band, but know you must also have a dual-band capable router. Also, update your drivers from intel, not sony, for the Intel Wireless. Intel's drivers are MUCH newer usually.

 

I would not do it, it's like you could connect to the internet using both bands at the same time. It's ether 2.4 or 5.

Besides, having both would surely be using more power. I say choose one and stick to it.
From my testing, 5ghz doesnt have a long range and has a problem going through walls. I would just stick to 2.4

 

What exactly does the feature do? My card by default sees both 2.4 and 5ghz A/P's but obviously can only connect to one at a time.

 

You most likely don't have a dual-band capable router or AP. What it does is give you HUGE bandwidth if you have it setup correctly on both ends. It lets you have both bands connected concurrently, with the throughput of both bands combined.

 

I do have a simultaneous dualband router...2 in fact. A linksys E3000 upstairs and a Netgear WNDR3700 downstairs.

So....how do you set it up correctly. Do I set my ssid's to be the same for each band? anything else? Right now I have separate ssid's (ie headshot24 and headshot5)

Thanks!