That is true but nowadays the control rooms are separate from the actual antennas / areas being served. These are wired up with more modern comms.
"modern" -> "we stuck digital computers into a purely analog pipeline to make sure it's capable of a wide range of harrowing, incomprehensible failures."
"modern" -> "we stuck digital computers into a purely analog pipeline to make sure it's capable of a wide range of harrowing, incomprehensible failures."