Wireless Joint

Any idea of how to get a signal with a 1700-2700MHz WiFi 4G LTE 15dBi Directional MIMO Antenna if I don't know exactly where the tower is? I have a good idea but have yet to get signal with the external antenna that I can connect with. I get ok signal with the stock antenna except for when it rains ...

Is anyone using a cradelpoint 850 with a 1700-2700MHz WiFi 4G LTE 15dBi Directional MIMO Antenna? I got the antenna and the cradelpoint can't find a signal. I have tried pointing it where my neighbor points his and I get nothing. He's also on Sprint but not using a cradlepoint I can connect with the ...