Homebrew Antenna Design for GSM Modem

This is a free premium ebook based on my research on GSM antenna. After using this antenna, your GSM modem will have at least 4-5 bars signal (depends on your location).
You can download PDF format for this free eBook.

Check my sites for other free premium ebook!


Book Title : How to build omni antenna for USB modem
Category : Computer Book, Tips and Trick Book

Chapter Sample


To download, the ebook, please click here

This ebook use XLS file to calculate the length of the antenna. Download it here.