Hacker News Reader

They have to be due to how rapidly the sats move in and out of view.

Also frequency re-use. They will talk on the same frequency to multiple ground terminals, but pointed different directions from the satellites perspective.

Did not know that, neat. Phased arrays are so cool.

https://www.youtube.com/watch?v=qs2QcycggWU check this out, excellent teardown explanation about how the antenna works.

The math used to determine the phase offsets to steer the beam is absurd.

Reply on news.ycombinator.com