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An American satellite abandoned in 1967, now assumed to simply be space junk, has started transmitting again after 46 years.
This was one of the satellites designed and built by Lincoln Laboratory at MIT between 1965 and 1976, for testing techniques for satellite communication.
They made the series of satellites easy to recognize by naming them LES1 through to LES9. LES1-LES4 suffered different launch issues. LES1 and LES2 were supposed to be delivered to the same 2800 x 15000 km orbit, but a failure of a boost stage left LES1 in a 2800 km circular orbit.
https://www.thevintagenews.com/2016/10/31/abandoned-in-space-in-1967-a-us-satellite-has-started-transmitting-again/
