Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Reverse engineering the mysterious Up-Data Link Test Set from Apollo
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Back in 2021, a collector friend of ours was visiting a dusty warehouse in search of Apollo-era communications equipment. A box with NASA-st...
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Inside the Apollo "8-Ball" FDAI (Flight Director / Attitude Indicator)
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During the Apollo flights to the Moon, the astronauts observed the spacecraft's orientation on a special instrument called the FDAI (Fli...
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