i read this question before asking. how does a cell phone transmitter work?
i am very confused about Google Project Loon. I understand the balloons will be transmitting LTE from 20KM up in the sky.But i am sure there will be enough transmission power in the balloon so the signal can reach the ground. But how does a consumer handheld LTE device going to be able to transmit 20KM up to the sky and still be able to keep battery life?
What i am missing ?