These Satellites Were Reported Dead, But Came Back To Life!

Sometimes failed or retired satellites start working again, earning them the nickname "zombie satellites". I took a look at some of these undead devices, hearing several still transmitting radio signals to Earth long after their missions supposedly ended.

Thanks to Scott Tilley @sthed475 and @coastal8049 for suggesting this collaboration! You can find a ton of info about this topic at his blog and social media pages:
https://skyriddles.wordpress.com/author/coastal8049/
https://bsky.app/profile/coastal8049.bsky.social
https://x.com/coastal8049?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor

Jacopo Cassinis has an article about NOAA-2 here:
https://www.a-centauri.com/articoli/noaa2-satellite-decoding
I attempted to use his GNU-Radio flowchart but had some issues with it, I likely had the wrong sample rate. You can find his code here: https://github.com/RAD750/itos-decoder

Some of the other resources mentioned in the video include:
https://emitters.space/
https://www.dd1us.de/Downloads/radio%20transmissions%20from%20outer%20space.pdf
https://xerbo.net/posts/noaa2-revival/
https://sgcderek.github.io/
https://github.com/cbassa/strf
https://www.sarcnet.org/rotator-mk1.html

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