Homemade Wi-Fi and 3G antennas
When you're installing Wi-Fi router the signal can be taken badly in near rooms. It can be corrected by connectoin of homemade antenna to your router.
We can offer you 4 different consructions of antennas, which are different with construction and application factor. The application factor of antennas depends on the materials used and manufacturing precision. Antenna type "wave channel" (3 elements) and Z-antenna it is 5 ... 6 dB, for a two-element antenna loop (double square) is 10 ... 13 dB, and for the three-element framework (triple square) - 14 ... 15 dB.
For using in diapozones Wi-Fi/3G all types of antennas, which're given here are made of copper wire with diameter 2.3 mm, places of connection are brazed. The antenna should be connected with high-frequency coaxial cable with a characteristic impedance of 50 ohms.
At the free end of the cable is installed the same connector as on the whip antenna Wi-Fi router (GSM-modem).
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What to read?
Robert J. Sawyer "Wake". Caitlin Decter is young, pretty, feisty, a mathematics genius - and blind. Still, she can surf the net with the best of them, following its complex paths clearly in her mind. But Caitlin's brain long ago co-opted her primary visual cortex to help her navigate online. So when she receives an implant to restore her sight, instead of seeing reality, the landscape of the World Wide Web explodes into her consciousness, spreading out all around her in a riot of colors and shapes. While exploring this amazing realm, she discovers something - some other - lurking in the background. And it's getting more and more intelligent with each passing day. The first of a spellbinding future history trilogy that charts what will happen when the world's first first, and superior, artificial-intelligence is born in the web.
What to read?
Jean Kwok "Girl in Translation". When Kimberly Chang and her mother emigrate from Hong Kong to Brooklyn squalor, she quickly begins a secret double life: exceptional schoolgirl during the day, Chinatown sweatshop worker in the evenings. Disguising the more difficult truths of her life-like the staggering degree of her poverty, the weight of her family's future resting on her shoulders, or her secret love for a factory boy who shares none of her talent or ambition-Kimberly learns to constantly translate not just her language but herself back and forth between the worlds she straddles....
Dmitry Glukhovsky "Metro 2034". The basis of two bestselling computer games Metro 2033 and Metro Last Light, the Metro books have put Dmitry Glukhovsky in the vanguard of Russian speculative fiction alongside the creator of Night Watch, Sergei Lukyanenko. A year after the events of METRO 2033 the last few survivors of the apocalypse, surrounded by mutants and monsters, face a terrifying new danger as they hang on for survival in the tunnels of the Moscow Metro...
To find these books, check out the "e-library".