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The supercell - which has been applied effectively worldwide in point-to-multipoint systems - consists of 24 sectors, with each sector supporting a downlink and an uplink.
The downlink is a 32-channel telemetry link providing radio and imagery for navigation and situation data.
The signal is located 97 degrees west longitude with a downlink frequency of 12146.00 MHz.
The pattern of zeros and ones in the digital readouts ensures that the user segment receivers synchronize only on a NAVSTAR satellite downlink and not on some other electronic signal.
Each of the slave nodes has an uplink transceiver and a downlink transceiver, with the downlink transceiver ordinarily isolated by switches from the common bus.
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