Deep Space Network – Transmit-receive antennas
DSN, one of NASA’s three Space Communications and Navigation (SCaN) program networks. It is located in three places in the world – in California, Spain and Australia. This allows mission controllers to communicate continuously with spacecraft on and off the Moon despite the rotation of the Earth.
DSS-43, a 70-meter antenna located in the southern hemisphere, is the only one that can send commands to the Voyager 2 probe, which travels southwards in relation to the Earth’s. orbit. (Other antennas at the Canberra complex can also receive Voyager 2 signals, but only the DSS-43 can send commands to it.)
Voyager 2, launched in 1977, is more than 11 billion miles (17.6 billion kilometers) from Earth. Therefore, it requires a powerful radio antenna to transmit its commands. Such a possibility is offered by a special transmitter operating in the S band of Deep Space Station 43.