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Old 21-07-2021, 18:55   #166
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Re: Musk says Starlink will work on boats

I think StarLink is planning to launch 520-ish birds into its first polar orbits.

Given that Iridium can cover the entire world with 66 birds & StarLink's planning almost 8x as many just in polar orbits, I would think those polar birds, which will apparently ALL have laser inter-sat comms initially, should also be able to cover the world, albeit with limited bandwidth compared with the entire constellation.

Those polar birds will only be in 10 planes, so they'll have 18 of planar separation but only about 7 of separation within each plane, which should allow several to be in view at any given time. Also, when the birds are over the oceans, there's nobody else out there wanting to use them, so 520 should be plenty to service the needs of any boats out there. And StarLink shouldn't need to negotiate any service agreements with governments out there.

So yes, not yet, & possibly not even this year, but we have hope of it coming soon.

Apparently the polar birds are all launched from Vandenberg?

Does anyone know the Vandenberg launch schedule?
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Old 22-07-2021, 04:23   #167
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Re: Musk says Starlink will work on boats

Quote:
Originally Posted by Jon Hacking View Post
I think StarLink is planning to launch 520-ish birds into its first polar orbits.

Given that Iridium can cover the entire world with 66 birds & StarLink's planning almost 8x as many just in polar orbits, I would think those polar birds, which will apparently ALL have laser inter-sat comms initially, should also be able to cover the world, albeit with limited bandwidth compared with the entire constellation.

Those polar birds will only be in 10 planes, so they'll have 18 of planar separation but only about 7 of separation within each plane, which should allow several to be in view at any given time. Also, when the birds are over the oceans, there's nobody else out there wanting to use them, so 520 should be plenty to service the needs of any boats out there. And StarLink shouldn't need to negotiate any service agreements with governments out there.

So yes, not yet, & possibly not even this year, but we have hope of it coming soon.

Apparently the polar birds are all launched from Vandenberg?

Does anyone know the Vandenberg launch schedule?
Iridium satellites are quite a bit higher, about 150 miles higher than Starlink. So any coverage comparisons by number of satellites aren't really relevant, it's apples to oranges.
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Old 22-07-2021, 07:10   #168
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Re: Musk says Starlink will work on boats

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Originally Posted by redneckrob View Post
Iridium satellites are quite a bit higher, about 150 miles higher than Starlink. So any coverage comparisons by number of satellites aren't really relevant, it's apples to oranges.
Its even more apples to oranges when you know that iridium works in 1.6GHz band with regular RF technology and low bandwidth, while Starlink works in the 10-15GHz band with directional phased array and much higher bandwidths.

The range from sat to modem is going to suck for Starlink but they know that and are launching a metric ton of sats.

So far our beta has been working pretty great, the firmware is constantly changing so some weeks are really good and some are very laggy.
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