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Building a cantenna is simple, you only have to choose what type of can to use. I decided to use an aluminium can of dog food.
After you cleaned the can, use the applet in this site to know where to apply the N connector, be as accurate as possible, because the location of the connector is very important. Here you will see the internal of my cantenna, with a part of the N connector and the wire covered with tin (click will open a new window)  I used rivets to fix the N connector to the can. Be sure that the body of the connector and the can are physical in contact, because they share the mass. In the next photo you will see the N connector from outside the can.  After that I decided to improve the cantenna, so I tried to make a funnel to concentrate radio waves. I took a little aluminium sheet and made 8 strip, then I used rivets to fix these strip to the can.  Last, I used aluminium scotch all over the strips and made a "radio wave funnel" (well.. sort of..). Here you will see the work finished 
 According to xnetstrength I gained about 6% on signal strength If your cantenna doesn't work as you expected, you can use it as a pluviometer... Thanks goes to my friend Fabio's dogs. No liability for the contents of this document can be accepted. Use the concepts, examples and other content at your own risk. There may be errors and inaccuracies that may damage your system. Proceed with caution, and although this is highly unlikely, the author does not and can not take any responsibility for any damage to your system that may occur as a direct or indirect result of information that is contained within this document. You are strongly recommended to make a backup of your system before proceed and adhere to the practice of backing up at regular intervals. |