From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ua1-x934.google.com (mail-ua1-x934.google.com [IPv6:2607:f8b0:4864:20::934]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id D27D83B2A4 for ; Mon, 7 Feb 2022 14:06:46 -0500 (EST) Received: by mail-ua1-x934.google.com with SMTP id r8so23942553uaj.0 for ; Mon, 07 Feb 2022 11:06:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nathan.io; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=SHHa9qzYxYkc3gJEYTrdPr/OUmvQArQ766+SFUFwOMY=; b=kUYoCmENvxdKPf0gdgIfNEEKGX/XAUtRKlG9F4hxm3HcrU00/ygW3eeJ1j1SuzpT7I QLvwHKKzCA3cV9N1NETpF4IDrJiLQRj+iDXmdaMbYdjv+OmLUn3mhJn5/X2EDgfCfo6c HqO8lDNEIUHS7Q6zeT2OpJAbKsmyUXXv1Vux3KT5YOVIszZa3LzI8aHgP17WEW7xgkp9 dPDAI40zNstGgJl0iH/pB2UFDGClKXNbjvuIVbjTQ1JEBzNUIy61QEp7CT+CQYdeBwNU DhRYJtD4HiuRifm8SXs0RtFpcWqUf1CZCh6ZhqOpcpDp45hlwFYCVp12/KE1cHCixplo FjSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=SHHa9qzYxYkc3gJEYTrdPr/OUmvQArQ766+SFUFwOMY=; b=TZ2xxNfr8tMMXCDzH+wCHzQbTkkXgPv/LvDEC74R9wXTbDiy7n2YtiX2U+E2saJBOD EY4QfUW5Q1c3cx5g+kDkvYDd8FHcNbzUNFfZLAKgxiOAAuizExNrB2sdPd7kJ4Ow/LOA wCV8cBJHM200vQFJqb8BII5yxsyaevfSaA/q0DRacTnm9qDKrT82U5fvEK8V9+7PBEsD qLAq3qHS9JhI4pdhs0eAF8NyTwHMfQOa3SZwKIaK04d+Z9Nr7AcG5e7D8Vp2qyCGwYdS 4etY76N23Vc29gJFIMlzn2UaCS9kqPeoxw3vrFxY/fuYBjEtiJjP3R/PpM+/1VXrk+z2 V88Q== X-Gm-Message-State: AOAM530KXdquDsxCjpYaOHNoMdB6gkHmwFbz04q6mSGhltRI4MWzMmG4 l0OX+9dX/5A8jWonDfOzSnAMIBp45J9hbqCh70nnxvhDDAI= X-Google-Smtp-Source: ABdhPJxYto1bW6W2Y1ADf8d3GOh8lBU+xDcl4SjMu6tCLfKgJSoWXfX79KptQh+Kdo2PdWo628tr0dCOEGMqQ37TTYE= X-Received: by 2002:ab0:3d85:: with SMTP id l5mr414318uac.96.1644260806088; Mon, 07 Feb 2022 11:06:46 -0800 (PST) MIME-Version: 1.0 References: <0d78acc3-1101-c7d2-c7a6-53158b8c1045@vdr.net> In-Reply-To: <0d78acc3-1101-c7d2-c7a6-53158b8c1045@vdr.net> From: Nathan Owens Date: Mon, 7 Feb 2022 11:06:35 -0800 Message-ID: To: Christian von der Ropp Cc: starlink@lists.bufferbloat.net Content-Type: multipart/alternative; boundary="00000000000043edc105d7724db8" Subject: Re: [Starlink] Starlink for Tonga? 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: Mon, 07 Feb 2022 19:06:46 -0000 --00000000000043edc105d7724db8 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable You can simulate it on starlink.sx, maybe Mike will chime in with what he found in doing that. On Mon, Feb 7, 2022 at 11:05 AM Christian von der Ropp wrote= : > But in practice the satellites won't be sitting and waiting at the edge o= f > this 940km radius. They are moving in and out the radius and the question > is if satellite density is high enough so that once the serving satellite > loses its gateway link there's another satellite in the 940km radius whic= h > also covers Tonga. And then this new satellite cannot be within certain > elevation angles (~60-80=C2=B0 at 0=C2=B0 azimuth) where the geostationar= y arc > crosses Fijian skies and the gateway antennas have to seize emission. My > gut feeling is that availability in Tonga would be <90% simply because it= 's > too far out at the edge of a Fijian gateway's range where there will be > frequent service interruptions. > > > Am 07.02.2022 um 19:51 schrieb Nathan Owens: > > The current coverage radius of a gateway/ground station with a 25 degree > minimum elevation is ~940km, so nothing in theory. > > On Mon, Feb 7, 2022 at 10:50 AM Daniel AJ Sokolov > wrote: > >> Hello, >> >> I hope this is not offtopic: Starlink wants to build a ground station on >> Fiji to supply Tonga with internet. >> >> The distance between Tonga and Fiji is about 750 km minimum. That's >> quite the distance. >> >> What does Starlink have to do to make this work? >> >> Cheers >> Daniel >> _______________________________________________ >> Starlink mailing list >> Starlink@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/starlink >> > > _______________________________________________ > Starlink mailing listStarlink@lists.bufferbloat.nethttps://lists.bufferbl= oat.net/listinfo/starlink > > > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > --00000000000043edc105d7724db8 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
You can simulate it on star= link.sx, maybe Mike will chime in with what he found in doing that.

On Mon, Feb 7, 2022 at 11:05 AM Christian von der Ropp <cvdr@vdr.net> wrote:
=20 =20 =20
But in practice the satellites won't be sitting and waiting at the edge of this 940km radius. They are moving in and out the radius and the question is if satellite density is high enough so that once the serving satellite loses its gateway link there's another satellite in the 940km radius which also covers Tonga. And then this new satellite cannot be within certain elevation angles (~60-80=C2=B0 at 0=C2=B0 azimuth) whe= re the geostationary arc crosses Fijian skies and the gateway antennas have to seize emission. My gut feeling is that availability in Tonga would be <90% simply because it's too far out at the edg= e of a Fijian gateway's range where there will be frequent service interruptions.


Am 07.02.2022 um 19:51 schrieb Nathan Owens:
=20
The current coverage radius of a gateway/ground station with a 25 degree minimum elevation is ~940km, so nothing in theory.

On Mon, Feb 7, 2022 at 10:50 AM Daniel AJ Sokolov <daniel@sokolov.eu.org> wrote:
Hello,

I hope this is not offtopic: Starlink wants to build a ground station on
Fiji to supply Tonga with internet.

The distance between Tonga and Fiji is about 750 km minimum. That's
quite the distance.

What does Starlink have to do to make this work?

Cheers
Daniel
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