I had always heard it was possible to increase the range of my wireless router using tinfoil but I never really needed to try. That need has suddenly arisen: since setting up my home office (which the modem and router is in for the strongest possible signal on my work computer), my wifi signal to the living room is pretty weak and has frequent dropouts. Since my gaming/video computer is in the living room hooked to my 1080p 52" Sanyo, it’s kind of a big deal when you keep getting booted from Left4Dead servers or have problems seeing pics in Facebook.
To illustrate, here’s my apartment layout. The red graphic near the top is where my router is positioned. The blue graphic near the bottom is where my TV and computer are located.

I don’t have a fantastic router, just a little Belkin 54g unit. in fact I’m surprised I have a signal at all at 50 feet away. I also tried with my 54g Linksys router, but it had the same weak signal. I don’t want to go out and spend $50 on a repeater or a powered antenna, so I thought I’d give this a try.
Here’s a screenshot from my living room PC before I amplified the signal with the method I’m about to show you:

And after this free tweak:
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Double the signal! My games, Pandora, and videos are now uninterrupted!
Steps:
- To do this you’ll need to print out two handy sheets I made. Make sure when you print them, that the square in the corner is still square. If you resize the image (which shouldn’t be necessary) and the little blue squares become skewed, you may not be able to put it together properly and will have to print again. Note: These are modified versions of the printouts used at freeantennas.com – go there if you want to know specifics!
- After printing each of these on a standard letter-sized paper, cut out the images. If the blue squares that say "keep square" are rectangular, you’ll have to try to resize them yourself to fit your paper.
- With an XActo knife (or something similar) cut out the X’s in the Grip image (the funny shaped one), and the slits in the Sail image (the rounded rectangle image).
- Curl the Grip image a little so that the tabs fit into the Sail image.Once through, fold the edges and glue in place, so that your Grip forces the Sail to be a little concave.
- Take some aluminum foil or tinfoil and glue it to the back of the Sail. Yes, the back of it. Don’t worry, the paper won’t get in the way.
- Let it dry, then place the Grip and Sail on your router’s antenna. The end result should look something like this:
- That’s it! Try to aim the concave part of the sail toward your PC for a better signal (shiny part pointed away from the target computer(s)). Enjoy your ~12dBi of gain, for free!




