Communication system

Hi guys,I'm planning on building a space balloon that will carry a bunch of sensors. I need help in choosing a communication system that is light weight and can transmit data back to the ground for a live feed. It has to be able to send back video as well. A complete live feed package. I live in India so I can only use a 900 MHz signal. Please be so kind as to let me know what system I can use. It should have a minimum range of 35 KM,in the vertical and lateral angles. Thanks in advance .

It has to be able to send back video as well.

From what? The Arduino won’t be participating in that process.