 Because the Sun also produces a great deal of microwave radiation in addition to sunlight, it overwhelms the microwave radio s coming from the satellite's transponders.This enormous electromagnetic interference causes interruptions in fixed satellite services that use satellite dishes, including TV networks and radio networks, as well as VSAT and DBS.Only downlinks from the satellite are affected, uplinks from the Earth are normally not, as the planet "shades" the Earth station when viewed from the satellite.