Visitors to the NRAO can see the scopes, stroll the parklike grounds and learn about the
pioneers of
radio astronomy, but they can't use a cell phone — 13,000 square miles around the installation are a designated National Radio Quiet Zone to minimize interference with ongoing data collec
radio astronomy, but they can't use a cell phone — 13,000 square miles around the installation are a designated National
Radio Quiet Zone to minimize interference with ongoing data collec
Radio Quiet Zone to minimize interference with ongoing data collection.