This one about broadcast satellites.
Yes, this is fascinating stuff for me, with my past in the broadcast industry.
I’m having flashbacks to cleaning fourteen inches of snow out of a C-Band reciever.
(I ended up buying every jug of windshield washer fluid at the 7-Eleven on the way to the transmitter site, and pouring that over the dish until I could get the dish clear enough to pull a signal again.)
The bit about the higher orbit for spent satellites is fascinating to me. I kind of had just figured they let them fall out of orbit. But that they send them higher, so they’re out-of-the-way explains the ring of space junk.