Here is an example drawing of the recommended setup: http://www.rfwel.com/support/tech-dr...wwan-split.pdf.
In actuality if you just want it for the U300 in a single room them you can simplify the setup. Also we show it here using a Cellular router which is optional but convenient if you want to share the internet connection with several computers concurrently. Here is what you would need as a minimum:
- Outdoor high gain directional antenna: http://www.rfwel.com/shop/Yagi-1800-...S-Antenna.html
- Wireless amplifier: http://www.rfwel.com/shop/Wilson-Ele...r-1900MHz.html
- Indoor dome antenna: http://www.rfwel.com/shop/Dual-Band-Dome-Antenna.html
- Cables. Need two cables runs. One from outdoor antenna to amplifier and one from amplifier to indoor antenna: http://www.rfwel.com/shop/400-Series/ (we recommend this high quality low loss cable)
- Additionally recommend to add a lightning protector: http://www.rfwel.com/shop/Lightning-...0W-230VDC.html
- Example Cellular router: http://www.rfwel.com/shop/CradlePoin...nd-Router.html
This is a very high performance solution and will completely fix your problem.