From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.lang.hm (unknown [66.167.227.145]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id A07573B29E for ; Wed, 13 Jul 2022 20:31:14 -0400 (EDT) Received: from dlang-mobile (unknown [10.2.2.69]) by mail.lang.hm (Postfix) with ESMTP id ABFD313C053; Wed, 13 Jul 2022 17:31:13 -0700 (PDT) Date: Wed, 13 Jul 2022 17:31:13 -0700 (PDT) From: David Lang To: Dave Taht cc: starlink@lists.bufferbloat.net In-Reply-To: Message-ID: <134p918o-rr23-q9r6-o9qq-71p0os2596p@ynat.uz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Subject: Re: [Starlink] starlink at sea 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: Thu, 14 Jul 2022 00:31:14 -0000 On Wed, 13 Jul 2022, Dave Taht via Starlink wrote: > 2) They show 6 starlink terminals on one side of the ship, and 6 on > the other side (unless it's a reversed image). While I can imagine > that the downlink can manage that many terminals close by (but how?), > I find it hard to conceive that the uplinks can co-exist emitting that > much energy so few feet apart. Are modern phased arrays that good? Has > anyone experimented with how closely placed two terminals can be? I would assume that the uplinks are multiplexed under the control of the satellites (possibly time-based slots, but other options are possible). In some cases it may be possible to reprogram one dish to use a larger share of available airtime, but it is much simpler to have multiple standard devices than modifying some to use a larger share (not to mention the potential duty cycle limits) In the scale of satellite communication, the satellite can't really tell the difference between a few feet apart and a few hundred feet apart, the angle to the satellite is too small to resolve the difference. David Lang