I don't have any inside information but in my experience lurking in the amateur radio community the answer is 'it depends' and there is a lot of downlink that i

I don't have any inside information but in my experience lurking in the amateur radio community the answer is 'it depends' and there is a lot of downlink that is not encrypted. This will get you into the graph: https://twitter.com/usa_satcom https://twitter.com/usa_satcom https://twitter.com/uhf_satcom https://twitter.com/uhf_satcom https://twitter.com/r2x0t https://twitter.com/r2x0t