Any idea how much transport or transit will cost using these birds? On Tuesday, June 18, 2019 Matt Hoppes <[email protected]> wrote: Are you sure about that? Because as of earlier this year the links are still being put in in Pennsylvania.
On 6/18/19 4:16 AM, Eric Kuhnke wrote: > Most serious HFT moved to shortwave type links a while back, the > microwave path between the CME and New Jersey is obsolete... Think big > ass yagi-uda antennas, dipoles, much lower frequencies, very low data > rates. > > > > On Sat, Jun 15, 2019 at 4:02 PM Bill Prince <[email protected] > <mailto:[email protected]>> wrote: > > This is the best explanation I've seen (so far) of how the system is > expected to work. One thing I didn't think about was the low > latency. This video speculates that it will have lower latency than > trans-Atlantic fiber. Ergo, this may become the new darling of flash > traders. > > https://www.youtube.com/watch?v=giQ8xEWjnBs > > bp > <part15sbs{at}gmail{dot}com> > > On 6/3/2019 11:19 AM, [email protected] <mailto:[email protected]> wrote: >> I wonder how snow on the cpe antenna will affect things. >> *From:* Bill Prince >> *Sent:* Monday, June 3, 2019 12:16 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] SpaceX Says Its 60 Starlink Satellites Are >> All Phoning Home (and Fading Out) | Space >> >> That would be per satellite. So it doesn't really tell us what the >> system capacity is. Don't forget there will be ~ 600 satellites >> per ring, and (I think) 24 rings. >> >> bp >> <part15sbs{at}gmail{dot}com> >> >> On 6/3/2019 10:18 AM, Adam Moffett wrote: >>> People always ask about system capacity, but it's simpler than >>> that. Their FCC filings show 2ghz of spectrum for the downlink >>> from satellite to user terminal. They have two polarities, not >>> unlike us. We could generously assume they'll get 10 bits/hz. >>> That's 20gbps in a given geographic area. It doesn't matter how >>> many satellites there are, or what the capacity of a given >>> satellite is. I don't know how big that geographic area will be >>> exactly. >>> >>> -Adam >>> >>> >>> On 6/2/2019 6:15 PM, Bill Prince wrote: >>>> >>>> There are whole bunches of risk factors. >>>> >>>> Assuming the satellite-mesh system works (and that is still an >>>> if; note that this first batch does not include the sat-sat >>>> laser link capability), I have not seen a real estimate of the >>>> system capacity. I would presume there would be separate earth >>>> stations for each orbital plane. There could even conceivably be >>>> multiple earth stations for each orbital plane, which would make >>>> the system capacity flexible. >>>> >>>> IDK if they're making money or not, but they are serving body >>>> blows to the competition. >>>> >>>> There was open speculation that the Falcon heavy was going into >>>> a limited demand situation, but now that it seems to be working >>>> (so far), that market opportunity may be shifting as well. >>>> >>>> bp >>>> <part15sbs{at}gmail{dot}com> >>>> >>>> On 6/2/2019 12:52 PM, Ken Hohhof wrote: >>>>> >>>>> You’d think that SpaceX is highly profitable and is using those >>>>> profits to expand into the satellite Internet business. But >>>>> actually there is debate whether SpaceX is profitable without >>>>> accounting tricks, and even if it is profitable, the margins >>>>> are very thin. Reportedly the geostationary launch business is >>>>> softening, and SpaceX is actually looking to Starlink for >>>>> profits. No doubt it helps if you can launch your own >>>>> satellites, maybe even having them ride along while you get >>>>> paid to launch stuff for paying customers. But this sounds >>>>> like a pretty risky venture, paid for with borrowed money. If >>>>> it wasn’t risky, it wouldn’t be Elon, right?____ >>>>> >>>>> ____ >>>>> >>>>> ____ >>>>> >>>>> *From:* AF mailto:[email protected] *On Behalf Of *Mike >>>>> Hammett >>>>> *Sent:* Sunday, June 2, 2019 12:04 PM >>>>> *To:* AnimalFarm Microwave Users Group mailto:[email protected] >>>>> *Subject:* Re: [AFMUG] SpaceX Says Its 60 Starlink Satellites >>>>> Are All Phoning Home (and Fading Out) | Space____ >>>>> >>>>> ____ >>>>> >>>>> I would suspect they are going to have hundreds of earth >>>>> stations as opposed to one or two earth stations that legacy >>>>> platforms have. Up to the bird, maybe across one or two birds, >>>>> and back down to the fiber-fed earth stations. I've seen the >>>>> numbers, but I forgot the numbers. It's real bandwidth at each >>>>> one.____ >>>>> >>>>> >>>>> >>>>> ----- >>>>> Mike Hammett >>>>> Intelligent Computing Solutions <http://www.ics-il.com/> >>>>> >>>>><https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL> >>>>> Midwest Internet Exchange <http://www.midwest-ix.com/> >>>>> >>>>><https://www.facebook.com/mdwestix><https://www.linkedin.com/company/midwest-internet-exchange><https://twitter.com/mdwestix> >>>>> The Brothers WISP <http://www.thebrotherswisp.com/> >>>>> <https://www.facebook.com/thebrotherswisp> >>>>> >>>>> >>>>> <https://www.youtube.com/channel/UCXSdfxQv7SpoRQYNyLwntZg>____ >>>>> >>>>> >>>>>------------------------------------------------------------------------ >>>>> >>>>> *From: *"Tim Withrow via AF" <[email protected]> >>>>> *To: *[email protected] >>>>> *Cc: *"Tim Withrow" <[email protected]> >>>>> *Sent: *Saturday, June 1, 2019 4:43:01 PM >>>>> *Subject: *Re: [AFMUG] SpaceX Says Its 60 Starlink Satellites >>>>> Are All Phoning Home (and Fading Out) | Space____ >>>>> >>>>> What kind of bandwidth capacity could each satellite have at >>>>> any given point? >>>>> What is the usable bandwidth of their system? Who makes a >>>>> radio that big to carry/transmit such capacity or is it an >>>>> aggregate of small radio's?____ >>>>> >>>>> ____ >>>>> >>>>> >>>>>------------------------------------------------------------------------ >>>>> >>>>> On Saturday, June 1, 2019 Bill Prince <[email protected]> wrote:____ >>>>> >>>>> Naturally, we're all thinking about what effect this will have >>>>> in rural America, but I am also wondering if this would have >>>>> some effect on China's "great firewall"?____ >>>>> >>>>> ____ >>>>> >>>>> bp____ >>>>> <part15sbs{at}gmail{dot}com>____ >>>>> ____ >>>>> >>>>> On 6/1/2019 1:47 PM, Ken Hohhof wrote:____ >>>>> >>>>> I think one factor advocacy groups and govt critters need to >>>>> keep in mind is that instead of robust competition, what could >>>>> occur is “disruptive” pricing, having the effect of >>>>> discouraging or bankrupting the competition. And now some new >>>>> entrant is the only game in town. And if it turns out to be >>>>> unreliable, or not to have enough capacity, or their speeds >>>>> are actually best effort, or their satellites start dropping >>>>> out of the sky, or whatever, people can’t switch back to their >>>>> old provider. Like being dissatisfied with online stores and >>>>> assuming you can always switch back to the old brick and mortar >>>>> store, from Uber and Lyft back to taxis and limos. Sorry, they >>>>> don’t exist anymore.____ >>>>> >>>>> ____ >>>>> >>>>> This is unlikely to happen in big cities, I doubt Comcast will >>>>> go bankrupt because of Starlink. But to just assume there will >>>>> be lots of choices out in the middle of nowhere driving the >>>>> price down without any of them turning off the lights, seems a >>>>> little naïve.____ >>>>> >>>>> ____ >>>>> >>>>> And to assume big megacorps like SpaceX, Amazon, Googe, >>>>> Facebook, etc. would never price below cost to be “disruptive” >>>>> also seems naïve.____ >>>>> >>>>> ____ >>>>> >>>>> ____ >>>>> >>>>> *From:*AF mailto:[email protected] *On Behalf Of *Bill Prince >>>>> *Sent:* Saturday, June 1, 2019 3:20 PM >>>>> *To:* [email protected] >>>>> *Subject:* Re: [AFMUG] SpaceX Says Its 60 Starlink Satellites >>>>> Are All Phoning Home (and Fading Out) | Space____ >>>>> >>>>> ____ >>>>> >>>>> Sure. But after the clouds, geostationary still needs to go >>>>> another 23,000 miles. LEO only has to go a few hundred.____ >>>>> >>>>> ____ >>>>> >>>>> bp____ >>>>> <part15sbs{at}gmail{dot}com>____ >>>>> ____ >>>>> >>>>> On 6/1/2019 10:47 AM, Mathew Howard wrote:____ >>>>> >>>>> Clouds are generally a lot lower than a couple hundred >>>>> miles... ____ >>>>> >>>>> ____ >>>>> >>>>> On Sat, Jun 1, 2019, 10:58 AM Bill Prince >>>>> <[email protected]> wrote:____ >>>>> >>>>> Maybe at geostationary distances, but these are only a >>>>> few hundred miles up. >>>>> >>>>> bp >>>>> <part15sbs{at}gmail{dot}com> >>>>> >>>>> On 6/1/2019 8:56 AM, Matt Hoppes wrote: >>>>> > Don't those bands have significant attenuation issues >>>>> with like... >>>>> > clouds? >>>>> > >>>>> > On 6/1/19 10:55 AM, Bill Prince wrote: >>>>> >> According to Wikipedia, they will be on Ku, Ka, and >>>>> V bands. >>>>> >> >>>>> >> >>>>> >>>>>https://en.wikipedia.org/wiki/Starlink_(satellite_constellation) >>>>> >> >>>>> >> bp >>>>> >> <part15sbs{at}gmail{dot}com> >>>>> >> >>>>> >> On 6/1/2019 7:46 AM, Jaime Solorza wrote: >>>>> >>> Wonder what frequencies they will use? >>>>> >>> >>>>> >>> >>>>> >>>>>https://www.space.com/spacex-starlink-satellites-phone-home-dimming.html >>>>> >>>>> >>> >>>>> >>> >>>>> >> >>>>> >>>>> -- >>>>> AF mailing list >>>>> [email protected] >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com____ >>>>> >>>>> ____ >>>>> >>>>> >>>>> >>>>> ____ >>>>> >>>>> -- >>>>> AF mailing list >>>>> [email protected] >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com____ >>>>> >>>>> >>>>> -- >>>>> AF mailing list >>>>> [email protected] >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com____ >>>>> >>>>> ____ >>>>> >>>>> >>>> >>> >>> >> ------------------------------------------------------------------------ >> -- >> AF mailing list >> [email protected] <mailto:[email protected]> >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > -- > AF mailing list > [email protected] <mailto:[email protected]> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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