<html><head></head><body>UUCP?<br><br><div class="gmail_quote">On 7 March 2022 18:34:11 CET, Ben Greear <greearb@candelatech.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre dir="auto" class="k9mail">On 3/6/22 1:10 PM, David P. Reed wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;">Very interesting info about where current ground stations are, but of course Kyiv, Lviv, Kharkiv are close to some adjacent countries that already have Starlink <br>ground stations (didn't know they were up and running in Turkey).<br><br>Regarding ground-level repeating, the radio horizon is very short except in VHF where you can in principle bounce off the ionosphere. Don't join the Flat Earth <br>Society, the earth isn't very flat at all.<br><br>(yes, some small bands actually bend around the earth in the Troposhere, but bitrates feasible in that bandwidth is very poor. Maybe voice grade)<br><br>Microwave multihop links require LOS and except from mountaintop to mountaintop, it's hard to maintain them cheaply - Wall St uses microwaves between NYC and <br>Chicago, because the latency is much lower number of microseconds than direct fiber would be (little known fact about the difference between speed of light in <br>glass vs. air).<br><br>These technologies are "off the shelf" for fixed wireless deployment, but if I were trying to maintain or build a quick replacement for existing cables using <br>wireless, I suspect it would largely be too little, too late.<br></blockquote><br>For email, and anything else that can be stored and forwarded, you should be able to zig-zag from ground to sky to ground,<br>but it would take specialized software setup on the ground intermediate hops (something like bittorrent and/or an email<br>proxy I guess), and it would require the sky to be able to hair-pin ground-to-ground. So, a bit of work, but hopefully is<br>software-only fix.<br><br>For instance: Ground-east-1 <-> sky-to-the-west <-> ground-middle <-> sky-more-to-the-west <-> internet-ground-station-to-the-west<br>And maybe it is not directly due west due to orbital mechanics, but I think you get the idea.<br><br>Latency would be in minutes or maybe hours, but that is still a lot better than nothing.<br><br>Thanks,<br>Ben<br><br><div class="k9mail-signature">-- <br>Ben Greear <greearb@candelatech.com><br>Candela Technologies Inc <a href="http://www.candelatech.com">http://www.candelatech.com</a><hr>Starlink mailing list<br>Starlink@lists.bufferbloat.net<br><a href="https://lists.bufferbloat.net/listinfo/starlink">https://lists.bufferbloat.net/listinfo/starlink</a><br></div></pre></blockquote></div><div style='white-space: pre-wrap'><div class='k9mail-signature'>-- <br>Sent from my Android device with K-9 Mail. Please excuse my brevity.</div></div></body></html>