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NASA Shuts Off Instrument on Voyager 1 to Keep Spacecraft Operating
(science.nasa.gov)
This is a most excellent place for technology news and articles.
Voyager 1 was launched in 1977 - just before the Reagan era. Coincidence?
Also, and I'm still just guessing here, it's probably the culmination of the space race to the moon minus the pressure to be there before the Russians.
In other words, NASA's Golden Age.
Also, the tech was "just right" then. Small and frugal enough to fit on a probe but still robust enough to survive more than a few years in space.
Relatedly, For All Mankind makes me sad since in that universe, the space race is still on.