From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vsmx001.dclux.xion.oxcs.net (vsmx001.dclux.xion.oxcs.net [185.74.65.81]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id DBA593CB35 for ; Sat, 12 Jun 2021 15:05:38 -0400 (EDT) Received: from proxy-2.proxy.oxio.ns.xion.oxcs.net (proxy-2.proxy.oxio.ns.xion.oxcs.net [83.61.18.4]) by mx-out.dclux.xion.oxcs.net (Postfix) with SMTP id 95FF68C0DCF; Sat, 12 Jun 2021 19:05:32 +0000 (UTC) Date: Sat, 12 Jun 2021 21:05:19 +0200 From: Mike Puchol To: Nathan Owens Cc: Dave Taht , Michael Richardson , starlink@lists.bufferbloat.net Message-ID: <7759ff5d-9d0e-4dd5-8b05-5ea5646b7b5c@Spark> In-Reply-To: References: <950B8EAF-90B9-41A6-951D-91821F591D41@teklibre.net> <01a7bed2-6f49-3d7d-eb5a-209031ee8070@gmail.com> <391A8897-5A1F-424A-9DD0-01B66824887B@teklibre.net> <31411.1623506452@dooku> X-Readdle-Message-ID: 7759ff5d-9d0e-4dd5-8b05-5ea5646b7b5c@Spark MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="60c5057a_4e6afb66_15d" X-VadeSecure-Status: LEGIT X-VADE-STATUS: LEGIT Subject: Re: [Starlink] Microstate Accounting and the Nyquist problem X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jun 2021 19:05:39 -0000 --60c5057a_4e6afb66_15d Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Duh=E2=80=A6 you are correct, I was still on the desktop-sizes ones=E2=80= =A6 but would you need one=3F What I can find is not cheap. It would be i= nteresting to work the math eg for Doppler shift compensation which could= require better accuracy than a =E2=80=9Cnormal=E2=80=9D GPS synced timin= g source. Best, Mike On Jun 12, 2021, 18:43 +0200, Nathan Owens , wrote: > You can buy a coin sized chip-scale atomic clock, so it wouldn=E2=80=99= t surprise me. > > > On Sat, Jun 12, 2021 at 9:15 AM Mike Puchol wrot= e: > > > The basis for the GPS time sync is an atomic clock on board each sa= tellite. I very much doubt Starlink is placing one of those in their bird= s :-) > > > > > > Best, > > > > > > Mike > > > On Jun 12, 2021, 16:00 +0200, Michael Richardson , wrote: > > > > > > > > Dave Taht wrote: > > > > > It=E2=80=99s ironic that the device has to have gps in it, and = thus should be > > > > > able to provide perfect time to clients directly behind it, isn= =E2=80=99t. > > > > > > > > Couldn't starlink satellites *also* provide a GPS reference=3F > > > > They are lower and way more of them... > > > > > > > > -- > > > > =5D Never tell me the odds=21 =7C ipv6 mesh networks =5B > > > > =5D Michael Richardson, Sandelman Software Works =7C network arch= itect =5B > > > > =5D mcr=40sandelman.ca http://www.sandelman.ca/ =7C ruby on rails= =5B > > > > > > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > > Starlink mailing list > > > Starlink=40lists.bufferbloat.net > > > https://lists.bufferbloat.net/listinfo/starlink --60c5057a_4e6afb66_15d Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline
Duh=E2=80=A6 you are correct, I was still on the de= sktop-sizes ones=E2=80=A6 but would you need one=3F What I can find is no= t cheap. It would be interesting to work the math eg for Doppler shift co= mpensation which could require better accuracy than a =E2=80=9Cnormal=E2=80= =9D GPS synced timing source.

Best,

Mike
On Jun 12, 2021, 18:43 +0200, Natha= n Owens <nathan=40nathan.io>, wrote:
You can buy a coin sized chip-scale atomic clock, s= o it wouldn=E2=80=99t surprise me.&=23160;

On Sat, Jun 12, 2021 at 9= :15 AM Mike Puchol <mike=40s= tarlink.sx> wrote:
The basis for the GPS time sync is an atomic clock = on board each satellite. I very much doubt Starlink is placing one of tho= se in their birds :-)

Best,

Mike
On Jun 12, 2021, 16:00 +0200, Micha= el Richardson <mcr=40sandelman.ca>, wrote:
Dave Taht <davet=40teklibre.net> wrote:
It=E2=80=99s ironic that the device has to = have gps in it, and thus should be
able to provide perfect time to clients directly behind it, isn=E2=80=99t= .

Couldn't starlink satellites *also* provide a GPS reference=3F
They are lower and way more of them...

--
=5D Never tell me the odds=21 =7C ipv6 mesh networks =5B
=5D Michael Richardson, Sandelman Software Works =7C network architect =5B=
=5D mcr= =40sandelman.ca http://www.sandelman.ca/ =7C ruby on rails =5B

=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F= =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
Starlink mailing list
Starlink=40lists.bufferbloat.net
https://lists.bufferbloat.net/listi= nfo/starlink
--60c5057a_4e6afb66_15d--