teaming two wifi card for high data transfere

NO CAN DO, but, see if you have an option in your WIFI settings for Duplex communication and if so... make sure that it is enabled.
Alternately, get a faster WIFI hardware.

which is faster WIFI hardware in the market with economicaly, which one I should consider strongly for high range WIFI device from the main office or high range data tranferere 100 mbps wifi adapter to sub office.

I do not know if you can get this in your area, but Look at products from Trendnet.

http://www.trendnet.com

They have extremely fast and reasonably priced WI-FI network hardware.

> 1000 Mbps

WIFI signal weak also will make data transfer slow to main office even installed high speed WIFI adapter?.

if the wifi signal is poor there will be data loss and retries reducing throughput. In general the faster the data transfer speed the more problems you will have with distance travelled.

if you can find cards that support external antennae you can look at a directional type - but again it needs to be line of sight to work effectively. I have used a Pringles tube to great effect

Get WIFI with MI-MO technology. 50m is not very far

Just use a singular wifi card. but here are the real 2 options that you can use

1. Use wireless N if its available on your network because it has better range than G
2. But a card with an upgradable antenna that will get you better range, or use a directional antenna and again if you point it in the right location it will work a treat
3. use a wireless extender, they arent very expensive and drop it normally between 1/3 and 1/2 the distance between the 2 devices. This should amplify your signal enough so that the signal doesnt drop and you maintain a good connection all the way through

Can you give us a little more detail on your current setup? routers etc? this will allow me to give a little more detail in regards to the best way to configure and set up various options i suggested above. a picture and makes/models would be great :D

You are of course assuming that the 50 metres is line of sight?
- with no interruptions of any kind such as walls or floors or accross a parking lot?
- no 2 - 3 wireless signals locally in the area?
- to just push your solution with almost no information as to how effective it would be is ignorance. and as they say, ignorance is bliss.

Perhaps you should request more details about the offices before you say that mimo would be perfect. There may be 2 brick walls and a shed filled with junk in between them!

"experts" is a title given not just to someone who can answer a basic question. but can see an issue before it happens.

for expert p1339 I have attached wifi signal going drawings, sorry for delayed reply.
wifi.docx

That's ok i have been off for a little bit anyhow :P

Ok so looking at the drawing from shop 1 you have a line extending out to the left where theres a 50 - 70m indicator.. does that mean that before the line goes down it is 50 - 70 metres and then it looks like possibly another 100..?

can you explain a little so im sure i have the right understanding?

Thanks for the "critique" grasshopper.... Difference being that expert can read between the lines and does NOT need to ask bunch of silly questions just for sake of filling in the lines. But I guess some like to hear themselves talk.
So grasshopper pay attention before you start writing another silly comment...
The current WIFI sort of works this means that something even marginally will be better.
A gigabit WIFI with MIMO most likely will do the job and if not we can add repeater.
So there we go... Too bad I can't get points awarded from grasshoppers too ;-)

here is what i got from your comments insidetech
1. no point getting information to tailor a solution that works first time
2. the current wifi sort of works so adding stronger wifi is a sure thing.. not if its being ravaged by 20 things on the same channel or by signal disruption
3. a gigabit wifi will "most likely" work and if not could then "add" a repeater

If the poor guy wanted to try out solutions that might work he could try them himself. we are trying to get the best solution without him having to buy multiple things to use/test/configure

More devices means more configuration and more chances for something to go wrong. i hope you don't work in REAL IT

What i am trying to do is not only fix his issue as requested and provide a propper singular solution that is certain to work. But then can also give him the best options to eliminate the issue in the future such as what upgrades etc he could but when he is looking to buy new hardware

your "spray and pray" method is what you would expect from someone who doesnt understand how things actually work and just plops in a half thought out solution.

but hey.. lets let the user make the decision. and seeing as how he has attached a drawing and referenced my name and has said nothing about you, i think we can all look at this is your solution is not yet wanted/good enough to complete the question

******************************************************************

"Mr. Madison, what you've just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul.

Billy Madison: Okay, a simple "wrong" would've done just fine. "

OK... GRASSHOPPER ....  ;-)

So to the original author of this question. Here are some references that should answer your questions and help with your issue.

http://usatoday30.usatoday.com/tech/story/2012/09/16/speed-up-your-wi-fi-with-mimo/57789280/1

http://reviews.cnet.com/1990-3243_7-5124418-1.html

http://wifijedi.com/2009/01/24/how-stuff-works-80211n-mimo/

http://m.youtube.com/watch?autoplay=1&v=O-R6pjc0xyo

So i read all your links and they just explain the basics of Mimo, none of it explains your 300M law that you have been pushing and none of it is remotely tailored to this specific solution.

Here are some real links.
Range of wireless n - http://compnetworking.about.com/od/wirelessrouters/f/bestwifirange.htm

Here is info on the author - http://compnetworking.about.com/bio/Bradley-Mitchell-5853.htm

Just so we are clear we will compile the needed info to discredit you
-  A general rule of thumb in home networking says that 802.11b/g/n and devices support a range of up to 150 feet (46 m) indoors and 300 feet (92 m) outdoors.
- Both of these rough estimates represent the high end of the range seen in practice. Obstructions in home such as brick walls and metal frames or siding greatly can reduce the range of a Wi-Fi network by 25% or more

And here is some information on that particular author Bradley Mitchell
- http://compnetworking.about.com/bio/Bradley-Mitchell-5853.htm
Bradley is a seasoned engineer and team leader who has worked for several product development organizations in the computer and aerospace industries. He has published several research papers and is author / co-author of two patents.

Bradley has worked with Cisco Press as a technical reviewer, completing manuscript reviews for six published books including "Home Networking: A Visual Do-It-Yourself Guide," "Internet Phone Services Simplified" and "Cisco Networking Simplified" (2nd Edition). He has also previously written for Computerworld.com and served as an adjunct instructor in computer science at the Oregon Graduate Institute.

I honestly don't know why you keep pressing the matter but im happy to discredit you every time you supply no serious help.

OK... you big baaaad GRASSHOPPER ....  :-)

Only if you knew how silly you sound, but I will not indulge your little pathetic peacock display of insecurity. I think that you would do better sticking to watching movies and stay off the forum designated for EXPERTS...

Mr. p1339 altogether 50 - 70 Meters only

Mr. it enquiry.... Your question started out about teaming to get greater throughput.
MIMO is a form of "teaming", and you are also benefiting by greater range.
I think that if you take a moment and review references provided you should realize that your question was answered.

Expert: p1339 very nice

Thank you itenquiry
Happy to help and hopefully this gets you better speeds and connection :-)