<div dir="ltr"><div>Well that is even more limited than what I recalled from our Geelong meet discussion.</div><div><br></div>If that's the case, an FSO 1 gbps link over 2.5km is quite good then. I have a feeling the upper limit is very affected by fog (and other weather factors), and that a backup link is needed if full speed needs to be maintained the occasional time the fog is too thick. This puts it close to par with RF IMO (subject to price comparison). If used in a pure mesh network there may be one RF route and another FSO route, rather than having the redundancy on the link, it would be more economical to have redundant routes (given enough nodes).<div><br></div><div>Cheap short p2p (in the order of ~100m [and up to 1km] distance) LED FSO links would possibly beat RF links. I'm considering setting one up, pointing across the road. Such links are keyed very simply suffering little, if any, MODEM delay. Much research has been (apparently 100s of Millions of USD) spent on developing long distance and fast FSO with no success. Lightpointe is one such effort, but bundles RF redundancy (= fail). It would be great if FSO research could focus on the 50-100m range to reach ~10Gbps speeds cheaply - maybe a good candidate for crowd funding one a successful prototype is completed.</div><div><br></div><div>Would be a nice hack day - building an LED system that could reach at least 100Mbps.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Todd</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 30, 2015 at 12:34 PM, <span dir="ltr"><<a href="mailto:mw@freenet.net.au" target="_blank">mw@freenet.net.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-AU" link="blue" vlink="purple"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">24GHz Airfiber @ full speed is good for about 1km if you stay within the ridiculously low ACMA regulations ;)<u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">There is a 5GHz model, though, that claims similar data rates which can push a bit further, but you need a lot of free spectrum ;)<br><br>Cheers! <u></u><u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Mike.</span></p></div></blockquote></div>
</div><img width="0" height="0" class="mailtrack-img" src="https://mailtrack.io/trace/mail/3dddd23498035554687385edf87d98fb2e8a2e68.png"></div>