The power of a received signal in each point of the surface of the earth with the ERIP Express. and what is the amount of EIRP. the size of the antenna needed to receive a cut of the finds , usually the amount of ERIP needed to get the satellites on the map coverage or map dread them by the company, the main owners of the satellite ( like the. Astra and ... Intel set and.... ) On the official website they released.