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Apollo 11 Capcom Charlie Duke Talks to The Crew During Lunar Powered Descent  (FTV-0008003)
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Description
Apollo 11 capsule communicator (capcom) Charlie Duke talks to the Apollo 11 crew shortly after the start of the lunar powered descent (PDI). At this stage mission control is experiencing communication difficulties, and after instructions from flight director Gene Kranz, Duke tells Command Module Pilot (CMP) Michael Collins to relay to the Eagle crew an order to switch to the aft omni-directional antenna for better communication with Houston.

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

102:33:08 Aldrin: Proceed. One, Zero.

102:33:11 Armstrong (on-board): Ignition.

102:33:11 Aldrin: Ignition. (Thrust) 10 percent (Pause; static)

[Ten percent thrust means that the Descent Engine is generating ten percent of its maximum design power level of 10,500 pounds.]

102:33:41 Duke: Columbia, Houston. We've lost them. Tell them to go aft Omni. Over.

102:33:51 Collins: (To Eagle) They'd like to use the Omni (garbled)

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. 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."
 Lower Resolution MPEG Watermarked FREE Download
Format Req:   
Clip Number:FTV-0008003
Duration:00:00:52
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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Lower Resolution MPEG watermarked: FREE
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