From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dispatch1-us1.ppe-hosted.com (dispatch1-us1.ppe-hosted.com [148.163.129.48]) (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 555003B2A4 for ; Mon, 7 Feb 2022 16:18:52 -0500 (EST) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.7.67.133]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 88F981C007D for ; Mon, 7 Feb 2022 21:18:50 +0000 (UTC) Received: from mail3.candelatech.com (mail2.candelatech.com [208.74.158.173]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 674FFB00081 for ; Mon, 7 Feb 2022 21:18:50 +0000 (UTC) Received: from [192.168.100.195] (50-251-239-81-static.hfc.comcastbusiness.net [50.251.239.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail3.candelatech.com (Postfix) with ESMTPSA id 0904413C2B1 for ; Mon, 7 Feb 2022 13:18:50 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 0904413C2B1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1644268730; bh=GnSKUWWsCMnPQGhO/8XE1s4zr/IUz2ULhzdKVyDfA0Q=; h=Subject:To:References:From:Date:In-Reply-To:From; b=SVOaTEvA/kkSPWBQYz8HhSuJBTox1lPe07acgICF1HcbovE3qMgJopJ5XBBDj6IIo NzukU1CfsjCL4yvr9p1FiBdSIa7Fq8OXFAmZtdPQjWs1+tZ3vj8mOe9tn66MvpGGI5 T4FHnZFSF5RDsa1Qa7jQxeNf6g6bBi/40ct1C/Hk= To: starlink@lists.bufferbloat.net References: <0d78acc3-1101-c7d2-c7a6-53158b8c1045@vdr.net> From: Ben Greear Organization: Candela Technologies Message-ID: <44b2b090-457b-eb59-a75a-a0bbb0307073@candelatech.com> Date: Mon, 7 Feb 2022 13:18:49 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <0d78acc3-1101-c7d2-c7a6-53158b8c1045@vdr.net> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-MDID: 1644268731-TanE-GAYbfgM 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 21:18:52 -0000 90 or even much smaller percentage is a lot better than zero. I wonder if they can point the dish towards the horizon to pick up the sat where it can best see the functional downlink. I realize the dish auto-points itself now, but surely engineers that can design that can also design an 'off' switch for that and let their on-the-ground folks do some hacking.... Thanks, Ben On 2/7/22 11:05 AM, Christian von der Ropp wrote: > 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° at 0° azimuth) where 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 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 list >> Starlink@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/starlink > > > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > -- Ben Greear Candela Technologies Inc http://www.candelatech.com