The image above shows five of the 12-m diameter antennas of the
Australian Square Kilometer Array Pathfinder (ASKAP)
array in action. Also visible is a tower built to house
equipment to monitor any Radio Frequency Interference.
ASKAP is located on the Murchison Radio-astronomy Observatory,
which the Australian and Western Australian Governments have established
Radio Quiet Zone.
A radio quiet zone is an area in which signal levels from radiocommunications equipment
(such as television transmitters, mobile telephones and CB radios) and electrical
devices are controlled to limit interference to radio telescopes.