TerrorVision

TerrorVision is a movie starring Diane Franklin, Mary Woronov, and Gerrit Graham. A family's new satellite TV system starts receiving signals from another planet, and soon it becomes the passageway to an alien world.
Stanley Putterman installs a state-of-the-art satellite dish in his backyard, soon unleashing a strange monster that leaps off the screen and needs to feed on humans for survival.