The aadi quad band mobile signal LPDA antenna provides the ultimate solution in any area where communications can not work properly due to signal leakage, without interference, and could also improve the indoor electromagnetic environment. Economical and practical, safe and reliable, communication fluency. mini design, lighting protection, wide coverage. Use ALC technology Adaptable , adjusting the range automatically. Easy to install and use, can solve the signal problems. Low radiation value, safer and no harm to the human body. Perfect for house, home, offices on to use.