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Boosted by jsonstein@masto.deoan.org ("Jeff Sonstein"):
kenshirriff@oldbytes.space ("Ken Shirriff") wrote:

We obtained a mysterious box of 1960s electronics. I reverse-engineered it and with much effort, we got it running. It turns out to be a test unit for testing NASA's Up-Data Link, a system from the Apollo moon landing to control the spacecraft from the ground. Let's take a look inside... 1/n

A gray box of electronics. It has thirteen large orange digits displayed at the top, with lights and switches underneath. These have labels such as Message, UDL Compare, AGC Confirm, and Program Start. A paper tape reader sticks out of the front, with a paper tape threaded through it. The unit is rack-mountable with two handles on the front.