Where are the ground stations on the other end of South Pole communications?
The GOES satellite uses a ground station at the University of Miami operating under contract to the National Science Foundation (NSF) . The TDRS satellite uses the National Aeronautics and Space Administration (NASA) White Sands Complex (WSC) near Las Cruces, NM. Both ground stations have dedicated private communication links to the Denver USAP office where traffic is routed to appropriate networks and systems, like the telephone network, Internet, researcher university institutions, etc.
