This 15 element DIY USB Wifi Yagi antenna works better then my Cantenna. Download film sub indo. Now that it operates perfectly I feel confident enough to build a bigger Yagi antenna. According to the web host from the web page where I found the instructions on how to build this antenna it has no use to build an antenna with more then 22 elements because it would not give a lot more gain. But 22 elements is fine and that would give about 22dB gain, so it is worth the effort to make a 22 element Yagi antenna. All I have to do is to make new elements from standard 14 Gauge copper wire (in metric 1,62mm or 2,5 kwadraat) and make a new boom with 22 holes.
I will recycle the hacked USB stick because I can only use 1 antenna at a time. All the credits go to the web host from the web page shown down below, Mr. Phillip Collier. Special thanks to you for sharing the information. Yagi instructions: Cantenna instructions.
This page details the construction of a biquad antenna. 