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This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.
Read from the scan by GLM-OCR; expect the odd misread word.
## CONFIDENTIAL ## COLLINS ## 6.10 EASE OF OPERATIONS OF COMMUNICATIONS They were all right. There were also times when we had communications dropout that I don't think were explained. I had the feeling that there were a lot of ground antenna switching problems. There would be times when we really should have had sound and we didn't. It was due to some sort of a ground problem. It seemed to me that there were a lot more of those problems on this flight than there were on Apollo 8. ## ARMSTRONG You probably noticed that in the Center, too, handovers and switching. ## ALDRIN ORIN We chose not to control it on board, switching from one OMNI to the other. We let the ground handle the whole thing, and they just have a choice between two OMNI's. They are going to run into some dropouts invariably. ## COLLINS The PTC rate we used was 0.3 deg/sec. For the crew to switch OMNI's manually and go around A, B, C, D during the time when they're awake is really too much of a job, because you're having to switch OMNI's approximately every 5 minutes. ALDRIN It's 18 minutes. # CONFIDENTIAL
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