Radio frequency (RF) repeaters have been deployed in 2G. 3G and 4G to improve the coverage of cellular system. While it is treated as a cost effective solution to extend the network coverage. conventional RF repeaters simply perform amplify-and-forward operation based on the set-up without the capability of doing flexible adjustments based on control and scheduling indication from net... http://www.nacrack.com/flash-choice-Netgear-Nighthawk-LTE-Mobile-Hotspot-Router-Mobile-Hotspot-LTE-BRAND-NEW-p8608-best-super/