Labels:text | screenshot | font | black and white | number | white | document | receipt OCR: NASA SUBJECT: NAME: Lyndon B. Johnson Space Center MISSION IV. ORBITER AUDIO LOOPS DG44/RENA H. HALDIMAN OPERATIONS DATE: PAGE DIRECTORATE AUGUST 26, 1987 33 THE AUDIO LOOPS AVAILABLE TO THE CREW INCLUDE UHF LOOPS, TWO AIR-TO-GROUND LOOPS (A/G1, A/G2), TWO INTERNAL COMMUNICATIONS LOOPS (ICOMA, ICOMB), AND PAGE. A. EXTERNAL LOOPS THREE OF THE SIX AUDIO LOOPS PROVIDE EXTERNAL TO-THE-ORBITER COMMUNICATIONS: UHF, A/G1, A/G2. THE UHF, A/G1 AND A/G2 LOOPS PROVIDE ORBITER-MCC VOICE COMMUNICATIONS AND ONLY THE UHF SYSTEM ALSO PROVIDES EVA LINKS TO EVA CREW IN THE PAYLOAD BAY. (NOTE: UHF LINKS REMAIN ANALOG WHILE BOTH A/G1 AND A/G2 ARE FIRST DIGITIZED AND THEN SENT TO MCC VIA S-BAND PM AND KU-BAND LINKS. ) B. INTERNAL LOOPS THREE OF THE SIX AUDIO LOOPS PROVIDE INTERNAL ORBITER COMMUNICATIONS: ICOMA ...
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