Wireless Networking in the Developing World is a free book about designing, implementing, and maintaining low-cost wireless networks.
This is second release of the book includes over 170 pages of new material, including new chapters on solar power and economic planning, several new case studies, and much more.
This is not all, there are some step by step instructions and howtos build omni, biquad and cantenna antennas.
Perfect for startup and understanding the basics of wireless radio and antenna building.
Go download this book from wndw.net