When push comes to shove, you may be able to make a simple tool which
will create 11db gain for your wireless router. This is most effective when
you need more range in a specific direction.

Inreresting!!!! Any ideas on improving reception for a wireless pci card??

only if the wifi card has an external antenna.

What an interesting article - especially if it actually works. If I try it, does that qualify me for the tin-foil hat crew?

I can see the logic, and the need to be very accurate with the template. This from the site FAQ is interesting as well.
You need to have some type of site survey software running on a laptop to help tune it. This is readily available for little to no money as long as you can associate to the AP - Netstumbler, AirMagnet and Kismet should all be capable of mapping the signal.

At the same time, I have seen APs mounted next to a reflective surface (specifically 1 - a shiny plastic wall covering, and 2 - the thin metal stiffener plate inside some wallboard) significantly attenuate the signal available to devices attempting to connect. It is notable that in all cases these surfaces were fairly well flat, not significantly (if at all) curved.

From what I've heard, the CAN-tenna works well. Never used one as my laptop has an excellent built in antenna. Bear in mind the CAN-tenna is a directional antenna. (It is basically a YAGI antenna for you radio head geeks.)

this works very well, didnt get an increase of 11db, got around 9. boosted my network from low to very good - excellent.

What did you use for the tin foil? Not Alumin Foil right? Also if you did use Tin Foil where did you get it from?

I don't know if its tin or aluminium, sorry. I do know that it comes in a 50 foot roll from a Food Basics in Markham, Ontario, Canada. I think aluminium foil should work fine though...

Mmmm, okay I'll give it a try saves buying these extra high gain ant for my other High Power Router. They want $19 bucks for 6db gain ant. if you got 9db just using foil wow!

I've built another one today. This time, I've built it a lot stronger by making the foil thincker and using bristol board instead of flimsy 8.5 x 11 and got about 10dB. I think doubling the size of the reflector can also improve the dB values.

Wow! 10db you say, that sounds good how many layers did you use?

Also I can't find any tin fold, not even the craft stores or hardware stores just don't carry them.

So only this:

Reynolds Wrap® Heavy Duty Aluminum Foil
50 sq. ft - 12" wide
37 1/2 sq. ft. and 75 sq. ft. - 18" wide


Reynolds Wrap® Extra Heavy Duty Aluminum Foil
37 1/2 sq. ft. - 18" wide

Okay I found a better method for get the AF and going to use 50 yds of Heavy Duty Foil Tape. You use that on AC, Heater Units and piping. It has it's own sticky side so you don't need glue. I'll post my results shortly..

See below:

Now are you suppose to do both sides and that corner piece also with the tin foil or just one side. I've tried both ways and I don't see any difference in db gain. Maybe because my wireless access point are already high power signal at 100% signal strength each. One has 4db gain ant the other has 2db gain ant.

I don't think you can find tin foil anymore. It gives food a tinny taste, thats why no one buys it and no one makes it anymore.

ebay, if you are that desperate.

No my signal strenght is excellent throughout the house and it was just better to pickup another High Power AP did the trick...

Tin foil stopped being used in the early twenty's when FDA realized it poisoned you. Aluminum foil took over quickly but the name stuck. It's just to hard to say Aluminum.

I am wondering if there is a way to optimize internal antennas on laptops without an antenna port?