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by Reason077 2171 days ago
> "It's not going to be viable to have 50+ sats over all metro areas at once" ... "requiring literally millions of satellites"

That doesn't sound right. A satellite doesn't have to be directly overhead to be reachable. The coverage map below suggests that each satellite can cover a region 800-1000km in diameter, so with a fully deployed constellation of 12,000 to 42,000 satellites, there should easily be 50+ sats visible from any metro area. Perhaps even more than that.

https://satellitemap.space/indexA.html

1 comments

I'm surprised each sat has such a large radius (especially when the constellation is fully deployed). This is actually a bigger problem than I thought if that map is correct.

This means satellites are going to cover a very large area. There might be 50 sats to cover the area from Boston down to Washington DC. That's 1tbit/sec of bandwidth to cover 100m potential customers.

Considering beta service afiak is using 600-1200 sats I imagine sat penetration will be significantly less. Considering cell towers between 4G and 5G can offer 20gbps _per tower_ these days I can't see 20gbps working across an entire state. Especially when it has been hyped as better than terrestrial internet. Even with a small number of users it will degrade rapidly at peak times when you get 1-3k users watching netflix.