Labels:text | screenshot | font | line | number | black and white OCR: NASA SUBJECT: NAME: Lyndon B. Johnson Space Center II.C. ORBITER RF SYSTEM LINKS MISSION DG44/RENA H. HALDIMAN OPERATIONS DATE: PAGE DIRECTORATE AUGUST 26, 1987 10 FOR SENDING THE VOICE, COMMANDS, AND TELEMETRY, THE FIVE ORBITER RF SYSTEMS HAVE VARIOUS LINK CAPABILITIES, SUCH AS UPLINK (U/L), DOWNLINK (D/L), PAYLOAD LINKS (P/L), AND EVA LINKS. THIS SECTION DISCUSSES THE SYSTEMS IN THE FOLLOWING ORDER: 1. UHF SYSTEM 2. S-BAND PM SYSTEM 3. S-BAND FM SYSTEM 4. S-BAND P/L SYSTEM 5. KU-BAND SYSTEM NOTE : UPLINKS AND DOWNLINKS BETWEEN THE ORBITER AND MCC ARE SENT VIA GROUND STATION LINKS AND/OR TDRS LINKS. (SEE I. THE COMMUNICATIONS NETWORK)
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