To measure your signal, use inSSIDer or Netstumbler. However, for the cost, this DIY project can’t be beat. Remember, DIY projects always have risks that the external wireless device can be damaged or the desired results are not gained. The USB adapter and antenna can be stationary in a workshop, home, or they can be portable.

Laptops today have wireless adapters built in that may not give you the range of an adapter with an external antenna. This DIY project can increase your wireless signal strength. Test results will vary based on materials used in the home’s construction and from interference in the 2.4 Ghz range. With this test, I gained approximately 26db. In a ranch style or two story houses, the cantenna should be pointed towards the wireless source. With the can(tenna) pointed towards the wireless source, the signal should increase at least 10db more than the original strength prior to the modification. Make your connection to your wireless access point or router.

* Plug the USB cable into your laptop or desktop. Wi-Fi extenders and internet boosters shouldnt be placed directly in the dead zone youre trying to cover instead, plug in your choice of best Wi-Fi extender. Again, it is important to do this prior to connecting the adapter. * Connect the USB extension cable to the adapter (Do not plug into your computer). Allow the materials to dry for 4 - 6 hours. * Silicon around the USB adapter and slot in order to hold the USB adapter in place. * Carefully slide the USB adapter (antenna side up - usually 1/2″ by 3/8″ metal plate on one side) into the can. * Purchase a USB extension cable for < $8. Cutting the slot 1.25' from the metal base should be adequate. (Do not use a metal can unless you insulate your slot with silicon, with some form of rubber or plastic). * Cut a small slit into a pringles can (This is best used on a cardboard canister - non conductive. Some adapters may have small screws under the labels or have a small amount of glued area. Be careful not to scratch the board with your screwdriver or tools. * Carefully peal the side stickers from the USB adapter. If you would like to build a homemade Wi-Fi Amplifier or Antenna, you can boost your wireless antenna signal by making a “cantenna.” These antennas are easy to make and cost less than $25.00.

Homemade wifi signal amplifier