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Apollo 11 Capcom Charlie Duke Talks to The Crew Prior to Lunar Powered Descent  (FTV-0008002)
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Description
Apollo 11 capsule communicator (capcom) Charlie Duke talks to the Apollo 11 crew immediately prior to the start of the lunar powered descent (PDI). At around the time Duke gives the command to begin PDI, the signal drops out from lunar module Eagle. Afterwards we hear Command Module Pilot (CMP) Michael Collins trying to relay this message to Eagle. Duke then tells Collins to get Armstrong and Aldrin to yall the spacecraft right ten degrees to reaquire a signal (this yaw maneuver is a ten degree clockwise roll around the thrust axis. Houston is trying to put the high-gain antenna in a position where interference from the spacecraft structure will be reduced). At the same time, on the mission control loop flight director Gene Kranz is discussing this manouvere with his colleagues.

Transcript from air to ground flight loop (time on the left denotes ground elapsed time, or GET)

102:28:08 Duke: Eagle, Houston. If you read, you're Go for powered descent. Over.

102:28:18 Collins: (Relaying) Eagle, this is Columbia. They just gave you a Go for powered descent.

[They are five minutes from the planned Powered Descent Initiation.]

102:28:22 Duke: Columbia, Houston. We've lost them on the high gain again. Would you please...We're recommending (that they) yaw right 10 degrees and re-acquire.

The clip shows part of the above exchange from a camera positioned in front of Charlie Duke in Mission Control. The audio has been synchronised with the picture as well as possible, with film leader added either side and audio overlayed to better show the context of the clip. There is a slight look of annoyance visible on Duke's face because of the communication problems. Fellow astronaut Jim Lovell is visible to the right of frame seated next to Duke.

Guide to audio channels (each channel isolated)

1 - Air to ground flight loop
2 - Flight Director's loop

Historic Context of Clip
Background to Apollo 11:
The Apollo 11 mission was the first manned mission to land on the Moon. It was the fifth human spaceflight of the Apollo programs, and the third human voyage to the moon. Launched on July 16, 1969, it carried Commander Neil Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin 'Buzz' Aldrin.

Landing:
On July 20, 1969 the Lunar Module, called Eagle, separated from the Command Module, Columbia to make its descent to the lunar surface. As the landing began, Armstrong reported they were "running long"; Eagle was 4 seconds further along its descent trajectory than planned, and would land miles west of the intended site. Armstrong's first words after landing were: "Houston, Tranquillity Base here. The Eagle has landed."
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Clip Number:FTV-0008002
Duration:00:00:22
Date Recorded:20-Jul-1969
Sound:Yes  (48 KHz bit rate)Sound bit rate: 48 KHz
Color / B&W:Color
Original Media:16mm film
Clip Format:Broadcast High Definition
Compression:DVCPRO HD
Frame Size:1280 x 1080
Aspect Ratio:16:9
Frame Rate:25fps (Frames per Second)
Technical Defects:Not possible to synchronise all of the audio in this timeframe due to camera runoff
Clip Credit:NASA / Stephen Slater / Footagevault
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