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Re:Starlink satellites hindering detection of near-Earth ast... by markdown on Friday January 21, 2022 @07:23AM (#30022433)
OT but related... Starlink would really be useful in Tonga right about now, with their fibre-optic connection severed and expected to be out of commission for at least a month.
Re:Starlink satellites hindering detection of near-Earth ast... by ceejayoz on Friday January 21, 2022 @07:27AM (#30022474)
Not in its current state; it relies on a local ground station as they don't have the inter-satellite relaying via lasers working yet. Coming "soon", but that's Elon saying so. https://twitter.com/elonmusk/status/1482424984962101249
Re:Starlink satellites hindering detection of near-Earth ast... by ErikCorry on Friday January 21, 2022 @08:03AM (#30022884)
There's only 568km from Tonga to Niue, who still have Internet. I wonder if that's close enough to use a hypothetical Niue base station to bounce Internet off a Starlink to Tonga. Might be a little patchy depending on the exact locations of the satellites at any time.

Edit: Looks like Starlink doesn't have great coverage at this latitude anyway, currently: https://findstarlink.com/#4032402;3

Re:Starlink satellites hindering detection of near-Earth ast... by gpm on Friday January 21, 2022 @05:01PM (#30030531)
The site you're linking to is talking about visible starlink satellites, not starlink coverage.

Starlink is definitely available at that latitude (in the sense that there is signal, not in the sense that SpaceX is currently taking customers or has set up base stations), in the southern hemisphere the only significant landmass that doesn't have more or less constant coverage is Antarctica.

Back when coverage was more spotty, I made this map. I'd probably change some things if I revisited it now that there are lots of satellites up, but it's good enough for demonstrating the point: https://droid.cafe/starlink

Re:Starlink satellites hindering detection of near-Earth ast... by ErikCorry on Friday January 21, 2022 @05:55PM (#30031022)
Thanks yes I misunderstood the site
Re:Starlink satellites hindering detection of near-Earth ast... by mr_toad on Friday January 21, 2022 @06:34PM (#30031371)
The satellites have a ground footprint of about 4700km, so if there was a base station in Niue it should be easily in range. From what I’m reading no one on Tonga has a Starlink terminal, and there aren’t any base stations in the pacific.
Re:Starlink satellites hindering detection of near-Earth ast... by leobg on Friday January 21, 2022 @07:30AM (#30022502)
Are you sure? AFAIK the laser links are just needed to further reduce latency. I don’t think SpaceX needs any ground stations. Elon even talked about governments in countries like Afghanistan not being able to do anything against their citizens using Starlink apart from “shaking their fists at the sky”.
Re:Starlink satellites hindering detection of near-Earth ast... by Thervicarl on Friday January 21, 2022 @07:37AM (#30022560)
> I don’t think SpaceX needs any ground stations

It is not magic. You signal from the user terminal has to reach a ground station / gateway connected to the Internet. Either there are inter-satellite links and the signal can be routed to a gateway far away. Or there are not and the gateway need to be at most a few hundred kilometers away if you satellites are in orbit at 400km.

> Afghanistan not being able to do anything against their citizens using Starlink apart from “shaking their fists at the sky”.

Or sentence to death people caught with a Starlink dish on their roof.

Re:Starlink satellites hindering detection of near-Earth ast... by leobg on Friday January 21, 2022 @07:39AM (#30022590)
You are right.
Re:Starlink satellites hindering detection of near-Earth ast... by emteycz on Friday January 21, 2022 @07:34AM (#30022524)
A ground station is required in the current version of Starlink. Without it, the satellite has no internet connection to offer to clients.
Re:Starlink satellites hindering detection of near-Earth ast... by leobg on Friday January 21, 2022 @07:37AM (#30022566)
Ah. Of course. A ground station within the visibility cone of the individual satellite. You are right!
Re:Starlink satellites hindering detection of near-Earth ast... by cool_dude85 on Friday January 21, 2022 @07:36AM (#30022553)
Damn, Elon was telling a stupid lie? Consider me shocked. Anyway, when's your dancing robot coming? Mine's about to ship.
Re:Starlink satellites hindering detection of near-Earth ast... by iso1631 on Friday January 21, 2022 @07:34AM (#30022528)
Currently Starlink doesn't do Satelite-Satelite communication, so you'd have to downlink reasonably close to Tonga. Even ignoring the lack of downlink equipment, the maximum range is about 250 miles.

Fiji is the nearest realistic location to downlink, Suva, where many cables land (including the cable from Tonga). It's 466 miles, way over the horizon.

Re:Starlink satellites hindering detection of near-Earth ast... by T-A on Friday January 21, 2022 @07:53AM (#30022755)