The entire MediaFLO system is completely redundant. This monitor shows the state of the two uplink arrays for transmitting the TV images to the satellites that distribute them to the UHF transmitters and below the two Simulsat dishes for receiving TV channels from the networks in the first place, plus the steerable dish for receiving specific broadcasts for special events and live broadcasts. The day we visited, Uplink A was in use, transmitting to the Galaxy 28 satellite, with the identical Uplink B powered up in hot standby in case anything went wrong.