Review on BAS-2003 TS9 Indoor LTE MiMO 4G/LTE High Gain Signal Booster Antenna for USB Dongle (dongle not included) by Juan Castillo

The build quality is a bit poor but the antennas work great. My cellular provider installed a new mast which caused my modem to start connecting to a high latency (>150ms) 3G network. With this antenna I was able to connect to the best 4G tower again with 35ms latency. Ignore the bad reviews from people who think it must be magic. If you live in a bunker, in the woods, or somewhere out of sight of a tower with the right equipment, no amount of antenna will help you. However, if you can see the tower, but it's too far away for the modem's internal antenna to communicate with it effectively, then this is a significant upgrade.