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I'm curious why you think they'd just leave open the ability to destroy a satellite to anyone with a powerful enough transmitter. The telemetry, tracking and co

I'm curious why you think they'd just leave open the ability to destroy a satellite to anyone with a powerful enough transmitter. The telemetry, tracking and control (TT&C) data is absolutely encrypted for any serious satellite operating today.

okl 5y ago
You need authentication, not encryption for that. And yes, every satellite's TTM has an AU (authentication unit) nowadays.