<div dir="ltr">Mark isn't wrong. Large cloud builds I've been a part of - getting roof access for GPS antennas for this was ALWAYS a pain. <div><br></div><div>I have a small GPS thing to help with a project to validate the various GNSS networks (<a href="https://galmon.eu">https://galmon.eu</a>) and unless the antenna is physically outside it's pretty much useless. Even windows with some metallic coating will almost completely block signals. </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Nov 14, 2022 at 4:14 PM Mark Delany <<a href="mailto:g2x@juliet.emu.st">g2x@juliet.emu.st</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">On 14Nov22, Chris Barnes allegedly wrote:<br>
> Finally a timesource I can feel confident setting my watch to.<br>
<br>
> On Mon, 14 Nov 2022 at 07:38, Rob Thomas <<a href="mailto:xrobau@gmail.com" target="_blank">xrobau@gmail.com</a>> wrote:<br>
> <br>
> > The good news is, you now can! After about 6 months of wrangling bits and<br>
> > pieces together, "Honest" Rob's Used Car (and VoIP) Emporium has finally<br>
> > managed to get a bunch of custom made GPS Shields built and they are<br>
> > sitting right next to me here in Australia, suitable for lego-esque<br>
> > construction of your own NTP server!<br>
<br>
While I'm a big fan of all who run their own Stratum 1 time servers and Rob providing a<br>
hat/shield to do so is fantastic news, but...<br>
<br>
...be aware that the GPS signal is particularly weak and you almost certainly need to<br>
connect to an external antenna with specialized cabling to have any hope of getting a<br>
reliable signal.<br>
<br>
I'm happy to be proved wrong, but this is not a device you can install in your office (or<br>
home) server rack and expect to get signal. Ultimately it needs to see clear sky.<br>
<br>
And if you're thinking of installing this in a data-centre, forgeddaboutit. They charge<br>
crazy money to run a cable to an antenna on their roof.<br>
<br>
Don't get me wrong, I absolutely applaud the effort and I might buy one myself but just be<br>
aware of the antenna requirements which seem to have been downplayed in the original<br>
posts.<br>
<br>
<br>
Mark.<br>
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</blockquote></div>