80 dB Ultimate Cell Phone Signal Booster For 20,000 Sq ft With Yagi Antenna – 80116580
40,000 Sq Ft
80 dB Gain
This dual band system is configured for very large buildings and signal outside the building is week. The 850 Mega Hz and 1900 Mega Hz Yagi antennas act as primary source of signal concentrators to harness all the available signal at a given location and then the signal gets processed through a two stage amplification of 65dB and 15dB and then broadcasting is done via two panel antennas that can boost signal for 10,000 sq ft each inside the building.
Note: Works well for At&T or other places where the outside signal is very week