configured everything properly in my PC within the Room and Placed the Astana in my 2 nd Floor roof and my Client is nearly 1.5km Distance after that I installed the Client in 20 feet Height and tried to connect the internet But the signal is Not showing in the Client it self 

Kindly help me to resolve the issue 

Notew: is really need to see the antana from my Client side..? by Human Eyes, also